SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Aqua Metals, Inc. – ‘10-Q’ for 9/30/19 – ‘EX-101.LAB’

On:  Tuesday, 11/12/19, at 4:01pm ET   ·   For:  9/30/19   ·   Accession #:  1621832-19-109   ·   File #:  1-37515

Previous ‘10-Q’:  ‘10-Q’ on 7/31/19 for 6/30/19   ·   Next:  ‘10-Q’ on 4/30/20 for 3/31/20   ·   Latest:  ‘10-Q’ on 11/8/23 for 9/30/23   ·   2 References:   

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

11/12/19  Aqua Metals, Inc.                 10-Q        9/30/19   59:4.2M

Quarterly Report   —   Form 10-Q   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML    436K 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     25K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     25K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     22K 
58: R1          Document and Entity Information                     HTML     47K 
28: R2          Condensed Consolidated Balance Sheets               HTML    106K 
21: R3          Condensed Consolidated Balance Sheets               HTML     28K 
                (Parenthetical)                                                  
39: R4          Condensed Consolidated Statements of Operations     HTML     63K 
57: R5          Condensed Consolidated Statements of Stockholders'  HTML     84K 
                Equity (Deficit)                                                 
27: R6          Condensed Consolidated Statements of Stockholders'  HTML     26K 
                Equity (Deficit) (Parenthetical)                                 
20: R7          Condensed Consolidated Statements of Cash Flows     HTML    126K 
                (Unaudited)                                                      
38: R8          Organization                                        HTML     24K 
59: R9          Summary of Significant Accounting Policies          HTML     69K 
22: R10         Revenue Recognition                                 HTML     24K 
16: R11         Inventory                                           HTML     29K 
36: R12         Property and Equipment, Net                         HTML     50K 
55: R13         Asset Retirement Obligation                         HTML     25K 
23: R14         Convertible Note Payable                            HTML     32K 
17: R15         Notes Payable                                       HTML     41K 
37: R16         Leases                                              HTML     41K 
56: R17         Stockholders' Equity                                HTML     75K 
24: R18         Commitments and Contingencies                       HTML     33K 
15: R19         Subsequent Events                                   HTML     20K 
43: R20         Summary of Significant Accounting Policies          HTML     76K 
                (Policies)                                                       
49: R21         Summary of Significant Accounting Policies          HTML     59K 
                (Tables)                                                         
31: R22         Inventory (Tables)                                  HTML     30K 
13: R23         Property and Equipment, Net (Tables)                HTML     49K 
44: R24         Convertible Note Payable (Tables)                   HTML     29K 
50: R25         Notes Payable (Tables)                              HTML     35K 
32: R26         Leases (Tables)                                     HTML     40K 
14: R27         Stockholders' Equity (Tables)                       HTML     52K 
42: R28         Summary of Significant Accounting Policies -        HTML     32K 
                Additional Information (Details)                                 
51: R29         Summary of Significant Accounting Policies -        HTML     28K 
                Schedule of Computation of Potentially Dilutive                  
                Securities (Details)                                             
54: R30         Summary of Significant Accounting Policies -        HTML     31K 
                Schedule of Concentration of Credit Risk (Details)               
34: R31         Revenue Recognition (Details)                       HTML     20K 
19: R32         Inventory (Details)                                 HTML     28K 
26: R33         Property and Equipment, Net - Schedule of           HTML     47K 
                Property, and Equipment (Details)                                
53: R34         Property and Equipment, Net - Additional            HTML     21K 
                Information (Details)                                            
33: R35         Asset Retirement Obligation (Details)               HTML     26K 
18: R36         Convertible Note Payable - Schedule of Convertible  HTML     32K 
                Notes Payable (Details)                                          
25: R37         Convertible Note Payable - Additional Information   HTML     39K 
                (Details)                                                        
52: R38         Notes Payable - Additional Information (Details)    HTML     42K 
35: R39         Notes Payable - Schedule of Notes Payable           HTML     25K 
                (Details)                                                        
48: R40         Leases - Additional Information (Details)           HTML     34K 
41: R41         Leases - Right-of-Use Assets and Related Lease      HTML     28K 
                Liabilities (Details)                                            
12: R42         Leases - Maturities of Lease Liabilities (Details)  HTML     39K 
30: R43         Stockholders' Equity - Additional Information       HTML    174K 
                (Details)                                                        
46: R44         Stockholders' Equity - Schedule of Allocation of    HTML     25K 
                Stock-based Compensation (Details)                               
40: R45         Stockholders' Equity - Schedule of Assumptions      HTML     33K 
                Used in Black-Scholes-Merton Option-Pricing Model                
                (Details)                                                        
11: R46         Commitments and Contingencies (Details)             HTML     42K 
47: XML         IDEA XML File -- Filing Summary                      XML    102K 
29: EXCEL       IDEA Workbook of Financial Reports                  XLSX     56K 
 5: EX-101.INS  XBRL Instance -- aqms-20190930                       XML   1.19M 
 7: EX-101.CAL  XBRL Calculations -- aqms-20190930_cal               XML    152K 
 8: EX-101.DEF  XBRL Definitions -- aqms-20190930_def                XML    375K 
 9: EX-101.LAB  XBRL Labels -- aqms-20190930_lab                     XML   1.05M 
10: EX-101.PRE  XBRL Presentations -- aqms-20190930_pre              XML    613K 
 6: EX-101.SCH  XBRL Schema -- aqms-20190930                         XSD    125K 
45: ZIP         XBRL Zipped Folder -- 0001621832-19-000109-xbrl      Zip    143K

‘EX-101.LAB’   —   XBRL Labels — aqms-20190930_lab

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple"/>
<link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple"/>
<link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
<link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_2A17CD57532D0F9D23A03E2797AF4E36_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_07082838563A556BA9B4E1A2DDF543FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Financial Position [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_07082838563A556BA9B4E1A2DDF543FE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_07082838563A556BA9B4E1A2DDF543FE" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract_07082838563A556BA9B4E1A2DDF543FE" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_259AA0715A4DA5BF9D483E2797AFB548_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_80CED30D391E54E58B41D872318B5A5F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, par value (in dollars per share) </link:label>
<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_259AA0715A4DA5BF9D483E2797AFB548_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_80CED30D391E54E58B41D872318B5A5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Par or Stated Value Per Share </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_80CED30D391E54E58B41D872318B5A5F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare_80CED30D391E54E58B41D872318B5A5F" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare_80CED30D391E54E58B41D872318B5A5F" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockSharesAuthorized_B02ACA07DD425D3C1AA73E2797B00FFB_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_B2A0AE2E8F6D5A968498BB8FE09D89AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, authorized (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesAuthorized_B02ACA07DD425D3C1AA73E2797B00FFB_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_B2A0AE2E8F6D5A968498BB8FE09D89AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares Authorized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_B2A0AE2E8F6D5A968498BB8FE09D89AD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesAuthorized_B2A0AE2E8F6D5A968498BB8FE09D89AD" xlink:to="lab_us-gaap_CommonStockSharesAuthorized_B2A0AE2E8F6D5A968498BB8FE09D89AD" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockSharesIssued_A961C0548BD8A114D67D3E2797B08FAB_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_3C81B0F5C7CF53EB85D3B42836978E52" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, issued (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesIssued_A961C0548BD8A114D67D3E2797B08FAB_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_3C81B0F5C7CF53EB85D3B42836978E52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_3C81B0F5C7CF53EB85D3B42836978E52" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_3C81B0F5C7CF53EB85D3B42836978E52" xlink:to="lab_us-gaap_CommonStockSharesIssued_3C81B0F5C7CF53EB85D3B42836978E52" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockSharesOutstanding_0483F44F70566FFCC1783E2797B06938_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_5D08AD6D051858EFAAEBB707D7F7BE86" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock, outstanding (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesOutstanding_0483F44F70566FFCC1783E2797B06938_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_5D08AD6D051858EFAAEBB707D7F7BE86" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Outstanding </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_5D08AD6D051858EFAAEBB707D7F7BE86" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_5D08AD6D051858EFAAEBB707D7F7BE86" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_5D08AD6D051858EFAAEBB707D7F7BE86" xlink:type="arc"/>
<link:label id="lab_aqms_DocumentandEntityInfoAbstract_C884D746B24A921823D48DDE7A2A5FCD_label_en-US" xlink:label="lab_aqms_DocumentandEntityInfoAbstract_C884D746B24A921823D48DDE7A2A5FCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document and Entity Info [Abstract] </link:label>
<link:label id="lab_aqms_DocumentandEntityInfoAbstract_C884D746B24A921823D48DDE7A2A5FCD_documentation_en-US" xlink:label="lab_aqms_DocumentandEntityInfoAbstract_C884D746B24A921823D48DDE7A2A5FCD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Document and Entity Info [Abstract] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_DocumentandEntityInfoAbstract" xlink:label="loc_aqms_DocumentandEntityInfoAbstract_C884D746B24A921823D48DDE7A2A5FCD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_DocumentandEntityInfoAbstract_C884D746B24A921823D48DDE7A2A5FCD" xlink:to="lab_aqms_DocumentandEntityInfoAbstract_C884D746B24A921823D48DDE7A2A5FCD" xlink:type="arc"/>
<link:label id="lab_dei_EntityRegistrantName_AD39A384908C09677B4E8DDE7A2D9F13_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_AD39A384908C09677B4E8DDE7A2D9F13" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:label id="lab_dei_EntityRegistrantName_AD39A384908C09677B4E8DDE7A2D9F13_label_en-US" xlink:label="lab_dei_EntityRegistrantName_AD39A384908C09677B4E8DDE7A2D9F13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_AD39A384908C09677B4E8DDE7A2D9F13" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName_AD39A384908C09677B4E8DDE7A2D9F13" xlink:to="lab_dei_EntityRegistrantName_AD39A384908C09677B4E8DDE7A2D9F13" xlink:type="arc"/>
<link:label id="lab_dei_EntityCentralIndexKey_9A336F675D0A4A8724938DDE7A2D9737_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey_9A336F675D0A4A8724938DDE7A2D9737" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Central Index Key </link:label>
<link:label id="lab_dei_EntityCentralIndexKey_9A336F675D0A4A8724938DDE7A2D9737_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey_9A336F675D0A4A8724938DDE7A2D9737" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Central Index Key </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_9A336F675D0A4A8724938DDE7A2D9737" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey_9A336F675D0A4A8724938DDE7A2D9737" xlink:to="lab_dei_EntityCentralIndexKey_9A336F675D0A4A8724938DDE7A2D9737" xlink:type="arc"/>
<link:label id="lab_dei_DocumentType_6D004D54272B91D0E7EC8DDE7A2DF50D_terseLabel_en-US" xlink:label="lab_dei_DocumentType_6D004D54272B91D0E7EC8DDE7A2DF50D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Type </link:label>
<link:label id="lab_dei_DocumentType_6D004D54272B91D0E7EC8DDE7A2DF50D_label_en-US" xlink:label="lab_dei_DocumentType_6D004D54272B91D0E7EC8DDE7A2DF50D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Type </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_6D004D54272B91D0E7EC8DDE7A2DF50D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_6D004D54272B91D0E7EC8DDE7A2DF50D" xlink:to="lab_dei_DocumentType_6D004D54272B91D0E7EC8DDE7A2DF50D" xlink:type="arc"/>
<link:label id="lab_dei_DocumentPeriodEndDate_66156399EF6D7E949BC78DDE7A2E47DB_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_66156399EF6D7E949BC78DDE7A2E47DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Period End Date </link:label>
<link:label id="lab_dei_DocumentPeriodEndDate_66156399EF6D7E949BC78DDE7A2E47DB_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_66156399EF6D7E949BC78DDE7A2E47DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Period End Date </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_66156399EF6D7E949BC78DDE7A2E47DB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_66156399EF6D7E949BC78DDE7A2E47DB" xlink:to="lab_dei_DocumentPeriodEndDate_66156399EF6D7E949BC78DDE7A2E47DB" xlink:type="arc"/>
<link:label id="lab_dei_AmendmentFlag_C9C553646B0F11320B828DDE7A2E6336_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag_C9C553646B0F11320B828DDE7A2E6336" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amendment Flag </link:label>
<link:label id="lab_dei_AmendmentFlag_C9C553646B0F11320B828DDE7A2E6336_label_en-US" xlink:label="lab_dei_AmendmentFlag_C9C553646B0F11320B828DDE7A2E6336" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amendment Flag </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_C9C553646B0F11320B828DDE7A2E6336" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag_C9C553646B0F11320B828DDE7A2E6336" xlink:to="lab_dei_AmendmentFlag_C9C553646B0F11320B828DDE7A2E6336" xlink:type="arc"/>
<link:label id="lab_dei_CurrentFiscalYearEndDate_16EEE2424DACDB29F42B8DDE7A2E995F_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_16EEE2424DACDB29F42B8DDE7A2E995F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current Fiscal Year End Date </link:label>
<link:label id="lab_dei_CurrentFiscalYearEndDate_16EEE2424DACDB29F42B8DDE7A2E995F_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_16EEE2424DACDB29F42B8DDE7A2E995F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Current Fiscal Year End Date </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_16EEE2424DACDB29F42B8DDE7A2E995F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate_16EEE2424DACDB29F42B8DDE7A2E995F" xlink:to="lab_dei_CurrentFiscalYearEndDate_16EEE2424DACDB29F42B8DDE7A2E995F" xlink:type="arc"/>
<link:label id="lab_dei_EntityFilerCategory_0EBE5D04BBDF2AB40EDD8DDE7A2EA6A7_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory_0EBE5D04BBDF2AB40EDD8DDE7A2EA6A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Filer Category </link:label>
<link:label id="lab_dei_EntityFilerCategory_0EBE5D04BBDF2AB40EDD8DDE7A2EA6A7_label_en-US" xlink:label="lab_dei_EntityFilerCategory_0EBE5D04BBDF2AB40EDD8DDE7A2EA6A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Filer Category </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_0EBE5D04BBDF2AB40EDD8DDE7A2EA6A7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory_0EBE5D04BBDF2AB40EDD8DDE7A2EA6A7" xlink:to="lab_dei_EntityFilerCategory_0EBE5D04BBDF2AB40EDD8DDE7A2EA6A7" xlink:type="arc"/>
<link:label id="lab_dei_EntitySmallBusiness_4D8A06C7D5FACB93BD1F8DDE7A2EAA73_terseLabel_en-US" xlink:label="lab_dei_EntitySmallBusiness_4D8A06C7D5FACB93BD1F8DDE7A2EAA73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Small Business Flag </link:label>
<link:label id="lab_dei_EntitySmallBusiness_4D8A06C7D5FACB93BD1F8DDE7A2EAA73_label_en-US" xlink:label="lab_dei_EntitySmallBusiness_4D8A06C7D5FACB93BD1F8DDE7A2EAA73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Small Business </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntitySmallBusiness" xlink:label="loc_dei_EntitySmallBusiness_4D8A06C7D5FACB93BD1F8DDE7A2EAA73" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitySmallBusiness_4D8A06C7D5FACB93BD1F8DDE7A2EAA73" xlink:to="lab_dei_EntitySmallBusiness_4D8A06C7D5FACB93BD1F8DDE7A2EAA73" xlink:type="arc"/>
<link:label id="lab_dei_EntityEmergingGrowthCompany_F1CF0A6D5847ED2730A98DDE7A2FD93A_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_F1CF0A6D5847ED2730A98DDE7A2FD93A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Emerging Growth Company </link:label>
<link:label id="lab_dei_EntityEmergingGrowthCompany_F1CF0A6D5847ED2730A98DDE7A2FD93A_label_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_F1CF0A6D5847ED2730A98DDE7A2FD93A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Emerging Growth Company </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_dei_EntityEmergingGrowthCompany_F1CF0A6D5847ED2730A98DDE7A2FD93A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityEmergingGrowthCompany_F1CF0A6D5847ED2730A98DDE7A2FD93A" xlink:to="lab_dei_EntityEmergingGrowthCompany_F1CF0A6D5847ED2730A98DDE7A2FD93A" xlink:type="arc"/>
<link:label id="lab_dei_EntityExTransitionPeriod_0C683B08A35A54BC24718DDE7A2FE647_terseLabel_en-US" xlink:label="lab_dei_EntityExTransitionPeriod_0C683B08A35A54BC24718DDE7A2FE647" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Ex Transition Period </link:label>
<link:label id="lab_dei_EntityExTransitionPeriod_0C683B08A35A54BC24718DDE7A2FE647_label_en-US" xlink:label="lab_dei_EntityExTransitionPeriod_0C683B08A35A54BC24718DDE7A2FE647" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Ex Transition Period </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityExTransitionPeriod" xlink:label="loc_dei_EntityExTransitionPeriod_0C683B08A35A54BC24718DDE7A2FE647" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityExTransitionPeriod_0C683B08A35A54BC24718DDE7A2FE647" xlink:to="lab_dei_EntityExTransitionPeriod_0C683B08A35A54BC24718DDE7A2FE647" xlink:type="arc"/>
<link:label id="lab_dei_EntityShellCompany_85787F35636120DBB9278DDE7A2F8AA7_terseLabel_en-US" xlink:label="lab_dei_EntityShellCompany_85787F35636120DBB9278DDE7A2F8AA7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Shell Company </link:label>
<link:label id="lab_dei_EntityShellCompany_85787F35636120DBB9278DDE7A2F8AA7_label_en-US" xlink:label="lab_dei_EntityShellCompany_85787F35636120DBB9278DDE7A2F8AA7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Shell Company </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityShellCompany" xlink:label="loc_dei_EntityShellCompany_85787F35636120DBB9278DDE7A2F8AA7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityShellCompany_85787F35636120DBB9278DDE7A2F8AA7" xlink:to="lab_dei_EntityShellCompany_85787F35636120DBB9278DDE7A2F8AA7" xlink:type="arc"/>
<link:label id="lab_dei_EntityCurrentReportingStatus_8697BC895E027D4389198DDE7A2F7B97_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_8697BC895E027D4389198DDE7A2F7B97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Current Reporting Status </link:label>
<link:label id="lab_dei_EntityCurrentReportingStatus_8697BC895E027D4389198DDE7A2F7B97_label_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_8697BC895E027D4389198DDE7A2F7B97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Current Reporting Status </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_8697BC895E027D4389198DDE7A2F7B97" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCurrentReportingStatus_8697BC895E027D4389198DDE7A2F7B97" xlink:to="lab_dei_EntityCurrentReportingStatus_8697BC895E027D4389198DDE7A2F7B97" xlink:type="arc"/>
<link:label id="lab_dei_EntityCommonStockSharesOutstanding_FD4852BF0F091A3B182E8DDE7A2F373D_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_FD4852BF0F091A3B182E8DDE7A2F373D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Common Stock, Shares Outstanding </link:label>
<link:label id="lab_dei_EntityCommonStockSharesOutstanding_FD4852BF0F091A3B182E8DDE7A2F373D_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_FD4852BF0F091A3B182E8DDE7A2F373D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Common Stock, Shares Outstanding </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_FD4852BF0F091A3B182E8DDE7A2F373D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding_FD4852BF0F091A3B182E8DDE7A2F373D" xlink:to="lab_dei_EntityCommonStockSharesOutstanding_FD4852BF0F091A3B182E8DDE7A2F373D" xlink:type="arc"/>
<link:label id="lab_dei_DocumentFiscalPeriodFocus_5AB0A7990C9360B04AF18DDE7A2FBD5F_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_5AB0A7990C9360B04AF18DDE7A2FBD5F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Fiscal Period Focus </link:label>
<link:label id="lab_dei_DocumentFiscalPeriodFocus_5AB0A7990C9360B04AF18DDE7A2FBD5F_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_5AB0A7990C9360B04AF18DDE7A2FBD5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Fiscal Period Focus </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_5AB0A7990C9360B04AF18DDE7A2FBD5F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_5AB0A7990C9360B04AF18DDE7A2FBD5F" xlink:to="lab_dei_DocumentFiscalPeriodFocus_5AB0A7990C9360B04AF18DDE7A2FBD5F" xlink:type="arc"/>
<link:label id="lab_dei_DocumentFiscalYearFocus_F5CEC86D89B71304D0368DDE7A30BAD0_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_F5CEC86D89B71304D0368DDE7A30BAD0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Fiscal Year Focus </link:label>
<link:label id="lab_dei_DocumentFiscalYearFocus_F5CEC86D89B71304D0368DDE7A30BAD0_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_F5CEC86D89B71304D0368DDE7A30BAD0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Fiscal Year Focus </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_F5CEC86D89B71304D0368DDE7A30BAD0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_F5CEC86D89B71304D0368DDE7A30BAD0" xlink:to="lab_dei_DocumentFiscalYearFocus_F5CEC86D89B71304D0368DDE7A30BAD0" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetRetirementObligationDisclosureAbstract_4644A60F25A9431D00941C8198A1EE7B_label_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationDisclosureAbstract_A4A161E9BA625B948A93826BFE1AC776" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asset Retirement Obligation Disclosure [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetRetirementObligationDisclosureAbstract" xlink:label="loc_us-gaap_AssetRetirementObligationDisclosureAbstract_A4A161E9BA625B948A93826BFE1AC776" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetRetirementObligationDisclosureAbstract_A4A161E9BA625B948A93826BFE1AC776" xlink:to="lab_us-gaap_AssetRetirementObligationDisclosureAbstract_A4A161E9BA625B948A93826BFE1AC776" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementTable_7FB187405FE24FE3DA151C8198A1C6D9_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_A76433D62E1751CC942D5C89A2499646" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
<link:label id="lab_us-gaap_StatementTable_7FB187405FE24FE3DA151C8198A1C6D9_label_en-US" xlink:label="lab_us-gaap_StatementTable_A76433D62E1751CC942D5C89A2499646" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_A76433D62E1751CC942D5C89A2499646" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementTable_A76433D62E1751CC942D5C89A2499646" xlink:to="lab_us-gaap_StatementTable_A76433D62E1751CC942D5C89A2499646" xlink:type="arc"/>
<link:label id="lab_us-gaap_BalanceSheetLocationAxis_821F6FEC8DB2D69004801C8198A15A7C_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_4CC2A1BF038B5E38AE4F2D63A52E4B05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Axis] </link:label>
<link:label id="lab_us-gaap_BalanceSheetLocationAxis_821F6FEC8DB2D69004801C8198A15A7C_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationAxis_4CC2A1BF038B5E38AE4F2D63A52E4B05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_4CC2A1BF038B5E38AE4F2D63A52E4B05" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_4CC2A1BF038B5E38AE4F2D63A52E4B05" xlink:to="lab_us-gaap_BalanceSheetLocationAxis_4CC2A1BF038B5E38AE4F2D63A52E4B05" xlink:type="arc"/>
<link:label id="lab_us-gaap_BalanceSheetLocationDomain_11BF42A7838AAD2416691C8198A2714E_terseLabel_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_CA734955A2EF5181AC7C90558F9E36B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Domain] </link:label>
<link:label id="lab_us-gaap_BalanceSheetLocationDomain_11BF42A7838AAD2416691C8198A2714E_label_en-US" xlink:label="lab_us-gaap_BalanceSheetLocationDomain_CA734955A2EF5181AC7C90558F9E36B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Balance Sheet Location [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_CA734955A2EF5181AC7C90558F9E36B5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_CA734955A2EF5181AC7C90558F9E36B5" xlink:to="lab_us-gaap_BalanceSheetLocationDomain_CA734955A2EF5181AC7C90558F9E36B5" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsMember_3FEA6BBCF8ADE0BB232B1C8198A204C0_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsMember_2E5069E2E6475A7FBF25C5DC80C9F8AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsMember_3FEA6BBCF8ADE0BB232B1C8198A204C0_label_en-US" xlink:label="lab_us-gaap_OtherAssetsMember_2E5069E2E6475A7FBF25C5DC80C9F8AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_2E5069E2E6475A7FBF25C5DC80C9F8AE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsMember_2E5069E2E6475A7FBF25C5DC80C9F8AE" xlink:to="lab_us-gaap_OtherAssetsMember_2E5069E2E6475A7FBF25C5DC80C9F8AE" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementLineItems_2CAC17A992C0F972ED811C8198A25526_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_3EA94CFD4F0D5D409630187C2EFBBE2F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Line Items] </link:label>
<link:label id="lab_us-gaap_StatementLineItems_2CAC17A992C0F972ED811C8198A25526_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_3EA94CFD4F0D5D409630187C2EFBBE2F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_3EA94CFD4F0D5D409630187C2EFBBE2F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementLineItems_3EA94CFD4F0D5D409630187C2EFBBE2F" xlink:to="lab_us-gaap_StatementLineItems_3EA94CFD4F0D5D409630187C2EFBBE2F" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetRetirementObligationsNoncurrent_77F7496B0C0D5DF7A3D11C8198A3F94E_terseLabel_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationsNoncurrent_9E1AF01F2AB652DEAD25CF1097DD30F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Asset retirement obligation </link:label>
<link:label id="lab_us-gaap_AssetRetirementObligationsNoncurrent_77F7496B0C0D5DF7A3D11C8198A3F94E_label_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationsNoncurrent_9E1AF01F2AB652DEAD25CF1097DD30F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asset Retirement Obligations, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetRetirementObligationsNoncurrent" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_9E1AF01F2AB652DEAD25CF1097DD30F7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetRetirementObligationsNoncurrent_9E1AF01F2AB652DEAD25CF1097DD30F7" xlink:to="lab_us-gaap_AssetRetirementObligationsNoncurrent_9E1AF01F2AB652DEAD25CF1097DD30F7" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccretionExpense_F6A8A83424BE7DA98B151C8198A34854_terseLabel_en-US" xlink:label="lab_us-gaap_AccretionExpense_8B4C91B175EE56449610C802B864C4F4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accretion expense </link:label>
<link:label id="lab_us-gaap_AccretionExpense_F6A8A83424BE7DA98B151C8198A34854_label_en-US" xlink:label="lab_us-gaap_AccretionExpense_8B4C91B175EE56449610C802B864C4F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accretion Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccretionExpense" xlink:label="loc_us-gaap_AccretionExpense_8B4C91B175EE56449610C802B864C4F4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccretionExpense_8B4C91B175EE56449610C802B864C4F4" xlink:to="lab_us-gaap_AccretionExpense_8B4C91B175EE56449610C802B864C4F4" xlink:type="arc"/>
<link:label id="lab_aqms_ContributedToTrustFundYearOne_28F79818A248924758A91C8198A310D4_terseLabel_en-US" xlink:label="lab_aqms_ContributedToTrustFundYearOne_2AB82CE19C515C2E85601CAD7D8F1711" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Contributed to the Trust Fund </link:label>
<link:label id="lab_aqms_ContributedToTrustFundYearOne_28F79818A248924758A91C8198A310D4_label_en-US" xlink:label="lab_aqms_ContributedToTrustFundYearOne_2AB82CE19C515C2E85601CAD7D8F1711" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contributed to the Trust Fund </link:label>
<link:label id="lab_aqms_ContributedToTrustFundYearOne_28F79818A248924758A91C8198A310D4_documentation_en-US" xlink:label="lab_aqms_ContributedToTrustFundYearOne_2AB82CE19C515C2E85601CAD7D8F1711" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Refers to contribution of fund. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_ContributedToTrustFundYearOne" xlink:label="loc_aqms_ContributedToTrustFundYearOne_2AB82CE19C515C2E85601CAD7D8F1711" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_ContributedToTrustFundYearOne_2AB82CE19C515C2E85601CAD7D8F1711" xlink:to="lab_aqms_ContributedToTrustFundYearOne_2AB82CE19C515C2E85601CAD7D8F1711" xlink:type="arc"/>
<link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_D5C751CAC519F82B02DA8117451B1778_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_29FE3330B0105AD18C1D983545545AA4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Organization, Consolidation and Presentation of Financial Statements [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_29FE3330B0105AD18C1D983545545AA4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_29FE3330B0105AD18C1D983545545AA4" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_29FE3330B0105AD18C1D983545545AA4" xlink:type="arc"/>
<link:label id="lab_us-gaap_NatureOfOperations_01579BEC058BE936678A8117451B500C_terseLabel_en-US" xlink:label="lab_us-gaap_NatureOfOperations_41CE6668E4F553CFA8E292BF35126DBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Organization </link:label>
<link:label id="lab_us-gaap_NatureOfOperations_01579BEC058BE936678A8117451B500C_label_en-US" xlink:label="lab_us-gaap_NatureOfOperations_41CE6668E4F553CFA8E292BF35126DBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Nature of Operations [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NatureOfOperations" xlink:label="loc_us-gaap_NatureOfOperations_41CE6668E4F553CFA8E292BF35126DBB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NatureOfOperations_41CE6668E4F553CFA8E292BF35126DBB" xlink:to="lab_us-gaap_NatureOfOperations_41CE6668E4F553CFA8E292BF35126DBB" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtDisclosureAbstract_CE9EC8CAE756DBCDE7EC811744CA162E_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_47BC2BD661A25D7AAF8EAF064EE14CC3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_47BC2BD661A25D7AAF8EAF064EE14CC3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureAbstract_47BC2BD661A25D7AAF8EAF064EE14CC3" xlink:to="lab_us-gaap_DebtDisclosureAbstract_47BC2BD661A25D7AAF8EAF064EE14CC3" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConvertibleDebtTableTextBlock_4FFCB8DFE697E8AAECE8811744CB92F7_terseLabel_en-US" xlink:label="lab_us-gaap_ConvertibleDebtTableTextBlock_CAAA8806A7B8566A9753BB99D4CEDCF1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Notes Payable </link:label>
<link:label id="lab_us-gaap_ConvertibleDebtTableTextBlock_4FFCB8DFE697E8AAECE8811744CB92F7_label_en-US" xlink:label="lab_us-gaap_ConvertibleDebtTableTextBlock_CAAA8806A7B8566A9753BB99D4CEDCF1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Convertible Debt [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConvertibleDebtTableTextBlock" xlink:label="loc_us-gaap_ConvertibleDebtTableTextBlock_CAAA8806A7B8566A9753BB99D4CEDCF1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConvertibleDebtTableTextBlock_CAAA8806A7B8566A9753BB99D4CEDCF1" xlink:to="lab_us-gaap_ConvertibleDebtTableTextBlock_CAAA8806A7B8566A9753BB99D4CEDCF1" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_A76F895F723463E5413047E3999F8CD5_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_48E050B93F065C8B88FB4CCDA69304F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Cash Flows [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_48E050B93F065C8B88FB4CCDA69304F4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_48E050B93F065C8B88FB4CCDA69304F4" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_48E050B93F065C8B88FB4CCDA69304F4" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_F56EFFFC94699D4C8B1547E3999FCB12_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_38B5CB03816B5FF99A8DD670D28BD556" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from operating activities: </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_F56EFFFC94699D4C8B1547E3999FCB12_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_38B5CB03816B5FF99A8DD670D28BD556" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_38B5CB03816B5FF99A8DD670D28BD556" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_38B5CB03816B5FF99A8DD670D28BD556" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_38B5CB03816B5FF99A8DD670D28BD556" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetIncomeLoss_1226C908360C9F1E913847E3999F0681_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_665AAF7DB5045609BA199608E31017DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net loss </link:label>
<link:label id="lab_us-gaap_NetIncomeLoss_1226C908360C9F1E913847E3999F0681_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_665AAF7DB5045609BA199608E31017DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Income (Loss) Attributable to Parent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_665AAF7DB5045609BA199608E31017DA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_665AAF7DB5045609BA199608E31017DA" xlink:to="lab_us-gaap_NetIncomeLoss_665AAF7DB5045609BA199608E31017DA" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_E9E00A0E5B0B89DAF1A447E3999F3CD8_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_69EEBC981BD253C197DD7B04E64C976D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reconciliation of net loss to net cash used in operating activities </link:label>
<link:label id="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_E9E00A0E5B0B89DAF1A447E3999F3CD8_label_en-US" xlink:label="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_69EEBC981BD253C197DD7B04E64C976D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_69EEBC981BD253C197DD7B04E64C976D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_69EEBC981BD253C197DD7B04E64C976D" xlink:to="lab_us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_69EEBC981BD253C197DD7B04E64C976D" xlink:type="arc"/>
<link:label id="lab_aqms_DepreciationAndRightofUseAssetAmortization_752B08304FE93F7599AD47F289A808B0_terseLabel_en-US" xlink:label="lab_aqms_DepreciationAndRightofUseAssetAmortization_4570A332ADE15D988D07E1D200F0ED88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation </link:label>
<link:label id="lab_aqms_DepreciationAndRightofUseAssetAmortization_752B08304FE93F7599AD47F289A808B0_label_en-US" xlink:label="lab_aqms_DepreciationAndRightofUseAssetAmortization_4570A332ADE15D988D07E1D200F0ED88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation And Right-of-Use Asset, Amortization </link:label>
<link:label id="lab_aqms_DepreciationAndRightofUseAssetAmortization_752B08304FE93F7599AD47F289A808B0_documentation_en-US" xlink:label="lab_aqms_DepreciationAndRightofUseAssetAmortization_4570A332ADE15D988D07E1D200F0ED88" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Depreciation And Right-of-Use Asset, Amortization </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_DepreciationAndRightofUseAssetAmortization" xlink:label="loc_aqms_DepreciationAndRightofUseAssetAmortization_4570A332ADE15D988D07E1D200F0ED88" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_DepreciationAndRightofUseAssetAmortization_4570A332ADE15D988D07E1D200F0ED88" xlink:to="lab_aqms_DepreciationAndRightofUseAssetAmortization_4570A332ADE15D988D07E1D200F0ED88" xlink:type="arc"/>
<link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_7FE8E0416355FFA8FCCB47E3999FA322_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_3FFB73C1E6CE5D9DB571B93AC864DD10" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of intellectual property </link:label>
<link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_7FE8E0416355FFA8FCCB47E3999FA322_label_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_3FFB73C1E6CE5D9DB571B93AC864DD10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization of Intangible Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_3FFB73C1E6CE5D9DB571B93AC864DD10" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_3FFB73C1E6CE5D9DB571B93AC864DD10" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_3FFB73C1E6CE5D9DB571B93AC864DD10" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetRetirementObligationAccretionExpense_538A8E0316DCC08B8B7047E3999FC750_terseLabel_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationAccretionExpense_5E4A2AB2E86555D39E8ACB516CBD1112" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accretion of asset retirement obligation </link:label>
<link:label id="lab_us-gaap_AssetRetirementObligationAccretionExpense_538A8E0316DCC08B8B7047E3999FC750_label_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationAccretionExpense_5E4A2AB2E86555D39E8ACB516CBD1112" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asset Retirement Obligation, Accretion Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetRetirementObligationAccretionExpense" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_5E4A2AB2E86555D39E8ACB516CBD1112" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetRetirementObligationAccretionExpense_5E4A2AB2E86555D39E8ACB516CBD1112" xlink:to="lab_us-gaap_AssetRetirementObligationAccretionExpense_5E4A2AB2E86555D39E8ACB516CBD1112" xlink:type="arc"/>
<link:label id="lab_aqms_FairValueAdjustmentOfWarrantsNet_F9DC8F41958BBEEC588447E3999FCA59_terseLabel_en-US" xlink:label="lab_aqms_FairValueAdjustmentOfWarrantsNet_1EA2B65F5A085FD0AEB12CF53D24A287" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair value of warrant modification, net </link:label>
<link:label id="lab_aqms_FairValueAdjustmentOfWarrantsNet_F9DC8F41958BBEEC588447E3999FCA59_label_en-US" xlink:label="lab_aqms_FairValueAdjustmentOfWarrantsNet_1EA2B65F5A085FD0AEB12CF53D24A287" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Adjustment Of Warrants, Net </link:label>
<link:label id="lab_aqms_FairValueAdjustmentOfWarrantsNet_F9DC8F41958BBEEC588447E3999FCA59_documentation_en-US" xlink:label="lab_aqms_FairValueAdjustmentOfWarrantsNet_1EA2B65F5A085FD0AEB12CF53D24A287" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Fair Value Adjustment Of Warrants, Net </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_FairValueAdjustmentOfWarrantsNet" xlink:label="loc_aqms_FairValueAdjustmentOfWarrantsNet_1EA2B65F5A085FD0AEB12CF53D24A287" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_FairValueAdjustmentOfWarrantsNet_1EA2B65F5A085FD0AEB12CF53D24A287" xlink:to="lab_aqms_FairValueAdjustmentOfWarrantsNet_1EA2B65F5A085FD0AEB12CF53D24A287" xlink:type="arc"/>
<link:label id="lab_aqms_Fairvalueofcommonstockissuedforconsultingservices_78B1B2D467B953BC4AED47E3999F28EF_terseLabel_en-US" xlink:label="lab_aqms_Fairvalueofcommonstockissuedforconsultingservices_B60743F9D0DE5D6EAD1A9DCFF86294E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair value of common stock issued for consulting services </link:label>
<link:label id="lab_aqms_Fairvalueofcommonstockissuedforconsultingservices_78B1B2D467B953BC4AED47E3999F28EF_label_en-US" xlink:label="lab_aqms_Fairvalueofcommonstockissuedforconsultingservices_B60743F9D0DE5D6EAD1A9DCFF86294E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair value of common stock issued for consulting services </link:label>
<link:label id="lab_aqms_Fairvalueofcommonstockissuedforconsultingservices_78B1B2D467B953BC4AED47E3999F28EF_documentation_en-US" xlink:label="lab_aqms_Fairvalueofcommonstockissuedforconsultingservices_B60743F9D0DE5D6EAD1A9DCFF86294E7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Fair value of common stock issued for consulting services </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_Fairvalueofcommonstockissuedforconsultingservices" xlink:label="loc_aqms_Fairvalueofcommonstockissuedforconsultingservices_B60743F9D0DE5D6EAD1A9DCFF86294E7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_Fairvalueofcommonstockissuedforconsultingservices_B60743F9D0DE5D6EAD1A9DCFF86294E7" xlink:to="lab_aqms_Fairvalueofcommonstockissuedforconsultingservices_B60743F9D0DE5D6EAD1A9DCFF86294E7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensation_1DDC28AB18B228F2A19747E3999FA771_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_6FA676DF87C85EEC897DA8A2EF31EEA2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensation_1DDC28AB18B228F2A19747E3999FA771_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_6FA676DF87C85EEC897DA8A2EF31EEA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_6FA676DF87C85EEC897DA8A2EF31EEA2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_6FA676DF87C85EEC897DA8A2EF31EEA2" xlink:to="lab_us-gaap_ShareBasedCompensation_6FA676DF87C85EEC897DA8A2EF31EEA2" xlink:type="arc"/>
<link:label id="lab_us-gaap_FairValueAdjustmentOfWarrants_10270C7080366A0D5A9747E3999FFD42_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueAdjustmentOfWarrants_CE8C974006FA5636B8C16F3D1D1254CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warrant expense </link:label>
<link:label id="lab_us-gaap_FairValueAdjustmentOfWarrants_10270C7080366A0D5A9747E3999FFD42_label_en-US" xlink:label="lab_us-gaap_FairValueAdjustmentOfWarrants_CE8C974006FA5636B8C16F3D1D1254CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value Adjustment of Warrants </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAdjustmentOfWarrants" xlink:label="loc_us-gaap_FairValueAdjustmentOfWarrants_CE8C974006FA5636B8C16F3D1D1254CB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FairValueAdjustmentOfWarrants_CE8C974006FA5636B8C16F3D1D1254CB" xlink:to="lab_us-gaap_FairValueAdjustmentOfWarrants_CE8C974006FA5636B8C16F3D1D1254CB" xlink:type="arc"/>
<link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_24CC41348133E46E38BC47E3999F7AB2_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium_CB39C3C6380C59EB81C314E7A4A695A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of debt discount </link:label>
<link:label id="lab_us-gaap_AmortizationOfDebtDiscountPremium_24CC41348133E46E38BC47E3999F7AB2_label_en-US" xlink:label="lab_us-gaap_AmortizationOfDebtDiscountPremium_CB39C3C6380C59EB81C314E7A4A695A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization of Debt Discount (Premium) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_CB39C3C6380C59EB81C314E7A4A695A6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfDebtDiscountPremium_CB39C3C6380C59EB81C314E7A4A695A6" xlink:to="lab_us-gaap_AmortizationOfDebtDiscountPremium_CB39C3C6380C59EB81C314E7A4A695A6" xlink:type="arc"/>
<link:label id="lab_us-gaap_AmortizationOfFinancingCosts_D94117130B6226AAEAF647E3999F57E5_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_5252DEED9BB35074A86F1199751D9F2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization of deferred financing costs </link:label>
<link:label id="lab_us-gaap_AmortizationOfFinancingCosts_D94117130B6226AAEAF647E3999F57E5_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_5252DEED9BB35074A86F1199751D9F2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization of Debt Issuance Costs </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_5252DEED9BB35074A86F1199751D9F2A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfFinancingCosts_5252DEED9BB35074A86F1199751D9F2A" xlink:to="lab_us-gaap_AmortizationOfFinancingCosts_5252DEED9BB35074A86F1199751D9F2A" xlink:type="arc"/>
<link:label id="lab_aqms_NonCashConvertibleNoteInterestExpense_48D4A98BCC230F2AEFE047E3999F6D77_terseLabel_en-US" xlink:label="lab_aqms_NonCashConvertibleNoteInterestExpense_52FFB65CC85A5632AE721752BD5D5920" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-cash convertible note interest expense </link:label>
<link:label id="lab_aqms_NonCashConvertibleNoteInterestExpense_48D4A98BCC230F2AEFE047E3999F6D77_label_en-US" xlink:label="lab_aqms_NonCashConvertibleNoteInterestExpense_52FFB65CC85A5632AE721752BD5D5920" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-Cash Convertible Note Interest Expense </link:label>
<link:label id="lab_aqms_NonCashConvertibleNoteInterestExpense_48D4A98BCC230F2AEFE047E3999F6D77_documentation_en-US" xlink:label="lab_aqms_NonCashConvertibleNoteInterestExpense_52FFB65CC85A5632AE721752BD5D5920" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Value of convertible note interest expense recorded in noncash transactions. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_NonCashConvertibleNoteInterestExpense" xlink:label="loc_aqms_NonCashConvertibleNoteInterestExpense_52FFB65CC85A5632AE721752BD5D5920" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_NonCashConvertibleNoteInterestExpense_52FFB65CC85A5632AE721752BD5D5920" xlink:to="lab_aqms_NonCashConvertibleNoteInterestExpense_52FFB65CC85A5632AE721752BD5D5920" xlink:type="arc"/>
<link:label id="lab_aqms_NonCashInterestExpense_B85FA2687DCBCBDF744847E3999F693B_terseLabel_en-US" xlink:label="lab_aqms_NonCashInterestExpense_007F50A9406E55C5BCE4895FB68D2A38" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-cash interest expense </link:label>
<link:label id="lab_aqms_NonCashInterestExpense_B85FA2687DCBCBDF744847E3999F693B_label_en-US" xlink:label="lab_aqms_NonCashInterestExpense_007F50A9406E55C5BCE4895FB68D2A38" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Non-Cash Interest Expense </link:label>
<link:label id="lab_aqms_NonCashInterestExpense_B85FA2687DCBCBDF744847E3999F693B_documentation_en-US" xlink:label="lab_aqms_NonCashInterestExpense_007F50A9406E55C5BCE4895FB68D2A38" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Non-Cash Interest Expense </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_NonCashInterestExpense" xlink:label="loc_aqms_NonCashInterestExpense_007F50A9406E55C5BCE4895FB68D2A38" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_NonCashInterestExpense_007F50A9406E55C5BCE4895FB68D2A38" xlink:to="lab_aqms_NonCashInterestExpense_007F50A9406E55C5BCE4895FB68D2A38" xlink:type="arc"/>
<link:label id="lab_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_5666144EB3183CE299E747E3999F454A_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_CCFB74D56C5456AAB0EB3675C1FA605E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loss on disposal of Ebonex asset </link:label>
<link:label id="lab_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_5666144EB3183CE299E747E3999F454A_label_en-US" xlink:label="lab_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_CCFB74D56C5456AAB0EB3675C1FA605E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Impairment of Intangible Assets, Finite-lived </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_CCFB74D56C5456AAB0EB3675C1FA605E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_CCFB74D56C5456AAB0EB3675C1FA605E" xlink:to="lab_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_CCFB74D56C5456AAB0EB3675C1FA605E" xlink:type="arc"/>
<link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_609E38112A6146F4992647E3999F7239_negatedLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_0AEAE53282BC5B2EAA94EDD4E19F6D86" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Loss on disposal of equipment </link:label>
<link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_609E38112A6146F4992647E3999F7239_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_0AEAE53282BC5B2EAA94EDD4E19F6D86" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Disposition of Property Plant Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_0AEAE53282BC5B2EAA94EDD4E19F6D86" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_0AEAE53282BC5B2EAA94EDD4E19F6D86" xlink:to="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_0AEAE53282BC5B2EAA94EDD4E19F6D86" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryWriteDown_6BDC1A7CF5169D93D48547E3999F1AE1_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryWriteDown_D3E5D5C10CC05153BB9324FD4F54EBFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventory adjustment </link:label>
<link:label id="lab_us-gaap_InventoryWriteDown_6BDC1A7CF5169D93D48547E3999F1AE1_label_en-US" xlink:label="lab_us-gaap_InventoryWriteDown_D3E5D5C10CC05153BB9324FD4F54EBFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory Write-down </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryWriteDown" xlink:label="loc_us-gaap_InventoryWriteDown_D3E5D5C10CC05153BB9324FD4F54EBFF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryWriteDown_D3E5D5C10CC05153BB9324FD4F54EBFF" xlink:to="lab_us-gaap_InventoryWriteDown_D3E5D5C10CC05153BB9324FD4F54EBFF" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_4B1A8D885941FE011CE347E3999FB3FF_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_5CF20E5DE54F5AFC90126C6EDCB38E45" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Changes in operating assets and liabilities </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_4B1A8D885941FE011CE347E3999FB3FF_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_5CF20E5DE54F5AFC90126C6EDCB38E45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Operating Capital [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_5CF20E5DE54F5AFC90126C6EDCB38E45" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_5CF20E5DE54F5AFC90126C6EDCB38E45" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_5CF20E5DE54F5AFC90126C6EDCB38E45" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_AFD2622AB40742A8931F47E3999FF9E3_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_275D178DA3545CE1A6FF5C485C16C21F" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Accounts receivable </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_AFD2622AB40742A8931F47E3999FF9E3_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_275D178DA3545CE1A6FF5C485C16C21F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accounts Receivable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_275D178DA3545CE1A6FF5C485C16C21F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_275D178DA3545CE1A6FF5C485C16C21F" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsReceivable_275D178DA3545CE1A6FF5C485C16C21F" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_FA5EEF98C97B4774451547E3999FAE46_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_ED93D6F22996505794CF3CED239D37F6" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Inventory </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_FA5EEF98C97B4774451547E3999FAE46_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_ED93D6F22996505794CF3CED239D37F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Inventories </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_ED93D6F22996505794CF3CED239D37F6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInInventories_ED93D6F22996505794CF3CED239D37F6" xlink:to="lab_us-gaap_IncreaseDecreaseInInventories_ED93D6F22996505794CF3CED239D37F6" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_82DF56A8F2B52CE8C7CE47E3999F59B9_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_28787B37F6B35BF89BECB966C7344C3C" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Prepaid expenses and other current assets </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_82DF56A8F2B52CE8C7CE47E3999F59B9_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_28787B37F6B35BF89BECB966C7344C3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Prepaid Expense and Other Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_28787B37F6B35BF89BECB966C7344C3C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_28787B37F6B35BF89BECB966C7344C3C" xlink:to="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_28787B37F6B35BF89BECB966C7344C3C" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_534A89506F65B477B74147E3999F282B_verboseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_9EF014460F9050619D93B7477FE68B6E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accounts payable </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayable_534A89506F65B477B74147E3999F282B_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayable_9EF014460F9050619D93B7477FE68B6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accounts Payable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_9EF014460F9050619D93B7477FE68B6E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayable_9EF014460F9050619D93B7477FE68B6E" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayable_9EF014460F9050619D93B7477FE68B6E" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_56BBF627EE1D7B2FC74A47E3999F5685_verboseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_BAE083D7CD4E510DB037E1BC5C6A6B92" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_56BBF627EE1D7B2FC74A47E3999F5685_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_BAE083D7CD4E510DB037E1BC5C6A6B92" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accrued Liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_BAE083D7CD4E510DB037E1BC5C6A6B92" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_BAE083D7CD4E510DB037E1BC5C6A6B92" xlink:to="lab_us-gaap_IncreaseDecreaseInAccruedLiabilities_BAE083D7CD4E510DB037E1BC5C6A6B92" xlink:type="arc"/>
<link:label id="lab_aqms_IncreaseDecreaseInDeferredRent_9850D23232327C143D8847E3999F1847_terseLabel_en-US" xlink:label="lab_aqms_IncreaseDecreaseInDeferredRent_CACBD68E7E6C5FEB94B3EBEC41E93230" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred rent </link:label>
<link:label id="lab_aqms_IncreaseDecreaseInDeferredRent_9850D23232327C143D8847E3999F1847_label_en-US" xlink:label="lab_aqms_IncreaseDecreaseInDeferredRent_CACBD68E7E6C5FEB94B3EBEC41E93230" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred rent </link:label>
<link:label id="lab_aqms_IncreaseDecreaseInDeferredRent_9850D23232327C143D8847E3999F1847_documentation_en-US" xlink:label="lab_aqms_IncreaseDecreaseInDeferredRent_CACBD68E7E6C5FEB94B3EBEC41E93230" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Amount of increase (decrease) in deferred rent during the period. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_IncreaseDecreaseInDeferredRent" xlink:label="loc_aqms_IncreaseDecreaseInDeferredRent_CACBD68E7E6C5FEB94B3EBEC41E93230" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_IncreaseDecreaseInDeferredRent_CACBD68E7E6C5FEB94B3EBEC41E93230" xlink:to="lab_aqms_IncreaseDecreaseInDeferredRent_CACBD68E7E6C5FEB94B3EBEC41E93230" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_9161DCACB49ED78B6CBC47E3999FDDE8_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_7C458EE638E95FBF86198839F8187493" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other assets and liabilities </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_9161DCACB49ED78B6CBC47E3999FDDE8_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_7C458EE638E95FBF86198839F8187493" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Operating Assets and Liabilities, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_7C458EE638E95FBF86198839F8187493" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_7C458EE638E95FBF86198839F8187493" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_7C458EE638E95FBF86198839F8187493" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_CC7FC554A512EE43110A47E3999F96FA_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_CD4B3129E83E55D6A50427902114A01E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash used in operating activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_CC7FC554A512EE43110A47E3999F96FA_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_CD4B3129E83E55D6A50427902114A01E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_CD4B3129E83E55D6A50427902114A01E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_CD4B3129E83E55D6A50427902114A01E" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_CD4B3129E83E55D6A50427902114A01E" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_B9B919331D1C6EBEB52F47E3999FEF3A_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_EC93E7007CAE5E7F96160F7E8B3DAB03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from investing activities: </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_B9B919331D1C6EBEB52F47E3999FEF3A_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_EC93E7007CAE5E7F96160F7E8B3DAB03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_EC93E7007CAE5E7F96160F7E8B3DAB03" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_EC93E7007CAE5E7F96160F7E8B3DAB03" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_EC93E7007CAE5E7F96160F7E8B3DAB03" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_BE251B67CDDECE59D7DB47E3999FCA22_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_35599893FE715BACB843A812456C7CD1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Purchases of property and equipment </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_BE251B67CDDECE59D7DB47E3999FCA22_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_35599893FE715BACB843A812456C7CD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_35599893FE715BACB843A812456C7CD1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_35599893FE715BACB843A812456C7CD1" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_35599893FE715BACB843A812456C7CD1" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquireProductiveAssets_BB4C565D72DE215E799F47E76B722C8A_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireProductiveAssets_F4A28777922D57859A04D07CAE7F194C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Equipment deposits and other assets </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquireProductiveAssets_BB4C565D72DE215E799F47E76B722C8A_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireProductiveAssets_F4A28777922D57859A04D07CAE7F194C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Productive Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_F4A28777922D57859A04D07CAE7F194C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireProductiveAssets_F4A28777922D57859A04D07CAE7F194C" xlink:to="lab_us-gaap_PaymentsToAcquireProductiveAssets_F4A28777922D57859A04D07CAE7F194C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_D1FD764E3B1DA2A6DFEA47E3999F8571_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_A12F4B976117568CB885A33E062CCECC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash used in investing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_D1FD764E3B1DA2A6DFEA47E3999F8571_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_A12F4B976117568CB885A33E062CCECC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_A12F4B976117568CB885A33E062CCECC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_A12F4B976117568CB885A33E062CCECC" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_A12F4B976117568CB885A33E062CCECC" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_8B178D9DC529DFDF5AC547E3999FAA6A_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_C06FFD9E44065A03BEBD5C5CA06F5030" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash flows from financing activities: </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_8B178D9DC529DFDF5AC547E3999FAA6A_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_C06FFD9E44065A03BEBD5C5CA06F5030" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_C06FFD9E44065A03BEBD5C5CA06F5030" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_C06FFD9E44065A03BEBD5C5CA06F5030" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_C06FFD9E44065A03BEBD5C5CA06F5030" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_801292818150A04CF43747E3999FB7C6_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_0C3F00D33B31563589A314C1C7FED4D7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from issuance of common stock, net of transaction costs </link:label>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_801292818150A04CF43747E3999FB7C6_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_0C3F00D33B31563589A314C1C7FED4D7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance of Common Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_0C3F00D33B31563589A314C1C7FED4D7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_0C3F00D33B31563589A314C1C7FED4D7" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_0C3F00D33B31563589A314C1C7FED4D7" xlink:type="arc"/>
<link:label id="lab_us-gaap_RepaymentsOfDebt_C3493C403211C0EA809847E3999FBDAD_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebt_0DCFF94E300A526BBC13492C08A3BB61" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Payments on notes payable </link:label>
<link:label id="lab_us-gaap_RepaymentsOfDebt_C3493C403211C0EA809847E3999FBDAD_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebt_0DCFF94E300A526BBC13492C08A3BB61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayments of Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfDebt" xlink:label="loc_us-gaap_RepaymentsOfDebt_0DCFF94E300A526BBC13492C08A3BB61" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfDebt_0DCFF94E300A526BBC13492C08A3BB61" xlink:to="lab_us-gaap_RepaymentsOfDebt_0DCFF94E300A526BBC13492C08A3BB61" xlink:type="arc"/>
<link:label id="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_A31782B7AD6212F0458B47E3999FA184_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_8D1AF5E46E2C5C95923FDB294DAC5E4E" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Payments on finance leases </link:label>
<link:label id="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_A31782B7AD6212F0458B47E3999FA184_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_8D1AF5E46E2C5C95923FDB294DAC5E4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayments of Long-term Capital Lease Obligations </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" xlink:label="loc_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_8D1AF5E46E2C5C95923FDB294DAC5E4E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_8D1AF5E46E2C5C95923FDB294DAC5E4E" xlink:to="lab_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_8D1AF5E46E2C5C95923FDB294DAC5E4E" xlink:type="arc"/>
<link:label id="lab_us-gaap_RepaymentsOfConvertibleDebt_DA883A71DB089A59034647E3999F8EF3_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfConvertibleDebt_E04B1C6743275B58B1015A3482F7176C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Payments on convertible note </link:label>
<link:label id="lab_us-gaap_RepaymentsOfConvertibleDebt_DA883A71DB089A59034647E3999F8EF3_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfConvertibleDebt_E04B1C6743275B58B1015A3482F7176C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayments of Convertible Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfConvertibleDebt" xlink:label="loc_us-gaap_RepaymentsOfConvertibleDebt_E04B1C6743275B58B1015A3482F7176C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfConvertibleDebt_E04B1C6743275B58B1015A3482F7176C" xlink:to="lab_us-gaap_RepaymentsOfConvertibleDebt_E04B1C6743275B58B1015A3482F7176C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_3B92FB2B50EB31A4CD9447E3999F73B2_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_1D99C001272657479FD684AEF4A5B4E6" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by financing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_3B92FB2B50EB31A4CD9447E3999F73B2_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_1D99C001272657479FD684AEF4A5B4E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1D99C001272657479FD684AEF4A5B4E6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_1D99C001272657479FD684AEF4A5B4E6" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_1D99C001272657479FD684AEF4A5B4E6" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_B9A45C68DD7B25D6ABA347E3999FD110_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_97F0891FE5D35A78B970C5C22CA9F157" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net decrease in cash and cash equivalents </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_B9A45C68DD7B25D6ABA347E3999FD110_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_97F0891FE5D35A78B970C5C22CA9F157" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_97F0891FE5D35A78B970C5C22CA9F157" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_97F0891FE5D35A78B970C5C22CA9F157" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_97F0891FE5D35A78B970C5C22CA9F157" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_34F92E7320ACE9762C3F47E3999F729C_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1AC2632DE43E5AF5943747AECEEF37FE" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents at beginning of period </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_34F92E7320ACE9762C3F47E3999F729C_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1AC2632DE43E5AF5943747AECEEF37FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1AC2632DE43E5AF5943747AECEEF37FE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1AC2632DE43E5AF5943747AECEEF37FE" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_1AC2632DE43E5AF5943747AECEEF37FE" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_4A6507F92E70DE2DFA4647E3999FB8A7_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_039DE15BDD6A58768FE136FF214100B4" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents at end of period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_039DE15BDD6A58768FE136FF214100B4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_039DE15BDD6A58768FE136FF214100B4" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_039DE15BDD6A58768FE136FF214100B4" xlink:type="arc"/>
<link:label id="lab_us-gaap_SupplementalCashFlowElementsAbstract_4A91A54859115204043B47E3999FE476_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowElementsAbstract_CEA95015C2C05EA784839BBBBCF65C45" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Supplemental disclosure of cash flows information </link:label>
<link:label id="lab_us-gaap_SupplementalCashFlowElementsAbstract_4A91A54859115204043B47E3999FE476_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowElementsAbstract_CEA95015C2C05EA784839BBBBCF65C45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Supplemental Cash Flow Elements [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowElementsAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowElementsAbstract_CEA95015C2C05EA784839BBBBCF65C45" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowElementsAbstract_CEA95015C2C05EA784839BBBBCF65C45" xlink:to="lab_us-gaap_SupplementalCashFlowElementsAbstract_CEA95015C2C05EA784839BBBBCF65C45" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeTaxesPaid_970BD92F978B74962F3447E3999F8959_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaid_4B9B7B4E769F5C378F59EDC5538358BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash paid for income taxes </link:label>
<link:label id="lab_us-gaap_IncomeTaxesPaid_970BD92F978B74962F3447E3999F8959_label_en-US" xlink:label="lab_us-gaap_IncomeTaxesPaid_4B9B7B4E769F5C378F59EDC5538358BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Taxes Paid </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:label="loc_us-gaap_IncomeTaxesPaid_4B9B7B4E769F5C378F59EDC5538358BC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxesPaid_4B9B7B4E769F5C378F59EDC5538358BC" xlink:to="lab_us-gaap_IncomeTaxesPaid_4B9B7B4E769F5C378F59EDC5538358BC" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestPaidNet_4CEFBC0EE2F9D610077347E3999F55CA_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaidNet_47969F5F152254E78D39F2671FD7C7A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash paid for interest </link:label>
<link:label id="lab_us-gaap_InterestPaidNet_4CEFBC0EE2F9D610077347E3999F55CA_label_en-US" xlink:label="lab_us-gaap_InterestPaidNet_47969F5F152254E78D39F2671FD7C7A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Paid, Excluding Capitalized Interest, Operating Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestPaidNet" xlink:label="loc_us-gaap_InterestPaidNet_47969F5F152254E78D39F2671FD7C7A6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPaidNet_47969F5F152254E78D39F2671FD7C7A6" xlink:to="lab_us-gaap_InterestPaidNet_47969F5F152254E78D39F2671FD7C7A6" xlink:type="arc"/>
<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_2D6D1EF09C20060BC21347E3999FCB9B_verboseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_B43FABF86EE75A04A6C615846BCCE9CF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Supplemental disclosure of non-cash transactions </link:label>
<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_2D6D1EF09C20060BC21347E3999FCB9B_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_B43FABF86EE75A04A6C615846BCCE9CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Supplemental Cash Flow Information [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_B43FABF86EE75A04A6C615846BCCE9CF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_B43FABF86EE75A04A6C615846BCCE9CF" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract_B43FABF86EE75A04A6C615846BCCE9CF" xlink:type="arc"/>
<link:label id="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_074C00A0F48F7993271247E399AF8A8D_terseLabel_en-US" xlink:label="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_A97A764E44E15D82A642EA237BAA0972" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Change in property and equipment resulting from change in accounts payable </link:label>
<link:label id="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_074C00A0F48F7993271247E399AF8A8D_label_en-US" xlink:label="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_A97A764E44E15D82A642EA237BAA0972" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Change in property and equipment resulting from change in accounts payable </link:label>
<link:label id="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_074C00A0F48F7993271247E399AF8A8D_documentation_en-US" xlink:label="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_A97A764E44E15D82A642EA237BAA0972" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Increase in property and equipment resulting from increase in accounts payable as a part of noncash activity. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable" xlink:label="loc_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_A97A764E44E15D82A642EA237BAA0972" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_A97A764E44E15D82A642EA237BAA0972" xlink:to="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccountsPayable_A97A764E44E15D82A642EA237BAA0972" xlink:type="arc"/>
<link:label id="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_9DCCF61FE1423C2A5E6547E399AF5800_negatedTerseLabel_en-US" xlink:label="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_D135FE23178C59E0BB25894D17B8DB63" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Change in property and equipment resulting from change in accrued expenses </link:label>
<link:label id="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_9DCCF61FE1423C2A5E6547E399AF5800_label_en-US" xlink:label="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_D135FE23178C59E0BB25894D17B8DB63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Change in property and equipment resulting from change in accrued expenses </link:label>
<link:label id="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_9DCCF61FE1423C2A5E6547E399AF5800_documentation_en-US" xlink:label="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_D135FE23178C59E0BB25894D17B8DB63" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Increase in property and equipment resulting from increase in accrued expenses as a part of noncash activity. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses" xlink:label="loc_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_D135FE23178C59E0BB25894D17B8DB63" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_D135FE23178C59E0BB25894D17B8DB63" xlink:to="lab_aqms_IncreaseInPropertyAndEquipmentResultingFromIncreaseInAccruedExpenses_D135FE23178C59E0BB25894D17B8DB63" xlink:type="arc"/>
<link:label id="lab_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_6B2DB5AB883DCFE2361647E399AF063C_terseLabel_en-US" xlink:label="lab_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_4808EA9469DE549DB229B6726311AD19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Change in equity resulting from change in accrued expenses </link:label>
<link:label id="lab_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_6B2DB5AB883DCFE2361647E399AF063C_label_en-US" xlink:label="lab_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_4808EA9469DE549DB229B6726311AD19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Change In Equity Resulting From A Change In Accrued Expenses </link:label>
<link:label id="lab_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_6B2DB5AB883DCFE2361647E399AF063C_documentation_en-US" xlink:label="lab_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_4808EA9469DE549DB229B6726311AD19" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Change in Equity Resulting From a Change in Accrued Expenses </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses" xlink:label="loc_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_4808EA9469DE549DB229B6726311AD19" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_4808EA9469DE549DB229B6726311AD19" xlink:to="lab_aqms_ChangeInEquityResultingFromAChangeInAccruedExpenses_4808EA9469DE549DB229B6726311AD19" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryDisclosureAbstract_1CCE6CDD4E17A40E99678BBA0A682987_label_en-US" xlink:label="lab_us-gaap_InventoryDisclosureAbstract_BDFE66EAD6405D16B7E7EE3D4C59824B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory Disclosure [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="loc_us-gaap_InventoryDisclosureAbstract_BDFE66EAD6405D16B7E7EE3D4C59824B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryDisclosureAbstract_BDFE66EAD6405D16B7E7EE3D4C59824B" xlink:to="lab_us-gaap_InventoryDisclosureAbstract_BDFE66EAD6405D16B7E7EE3D4C59824B" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryFinishedGoods_0299B6C04F67C06140E38BBA0A68D756_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoods_0045C447D9435D95929159D8C51C81BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finished goods </link:label>
<link:label id="lab_us-gaap_InventoryFinishedGoods_0299B6C04F67C06140E38BBA0A68D756_label_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoods_0045C447D9435D95929159D8C51C81BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Finished Goods, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryFinishedGoods" xlink:label="loc_us-gaap_InventoryFinishedGoods_0045C447D9435D95929159D8C51C81BD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryFinishedGoods_0045C447D9435D95929159D8C51C81BD" xlink:to="lab_us-gaap_InventoryFinishedGoods_0045C447D9435D95929159D8C51C81BD" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryWorkInProcess_8CA5B1A8CCB31C19F38B8BBA0A682C5D_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcess_6F3CAC4D9D935B69A11B2CBA43D89899" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Work in process </link:label>
<link:label id="lab_us-gaap_InventoryWorkInProcess_8CA5B1A8CCB31C19F38B8BBA0A682C5D_label_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcess_6F3CAC4D9D935B69A11B2CBA43D89899" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Work in Process, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryWorkInProcess" xlink:label="loc_us-gaap_InventoryWorkInProcess_6F3CAC4D9D935B69A11B2CBA43D89899" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryWorkInProcess_6F3CAC4D9D935B69A11B2CBA43D89899" xlink:to="lab_us-gaap_InventoryWorkInProcess_6F3CAC4D9D935B69A11B2CBA43D89899" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryRawMaterials_D66B6534DE53A8407DA48BBA0A68498B_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryRawMaterials_79BEDD4602ED5CFE81307523A1956489" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Raw materials </link:label>
<link:label id="lab_us-gaap_InventoryRawMaterials_D66B6534DE53A8407DA48BBA0A68498B_label_en-US" xlink:label="lab_us-gaap_InventoryRawMaterials_79BEDD4602ED5CFE81307523A1956489" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Raw Materials, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryRawMaterials" xlink:label="loc_us-gaap_InventoryRawMaterials_79BEDD4602ED5CFE81307523A1956489" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryRawMaterials_79BEDD4602ED5CFE81307523A1956489" xlink:to="lab_us-gaap_InventoryRawMaterials_79BEDD4602ED5CFE81307523A1956489" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryNet_8D8DD8B36393CEBEB0218BBA0A688880_totalLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_E5C2093AF65C58909A0C22CE7EEF8FC8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total inventory </link:label>
<link:label id="lab_us-gaap_InventoryNet_8D8DD8B36393CEBEB0218BBA0A688880_label_en-US" xlink:label="lab_us-gaap_InventoryNet_E5C2093AF65C58909A0C22CE7EEF8FC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_E5C2093AF65C58909A0C22CE7EEF8FC8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_E5C2093AF65C58909A0C22CE7EEF8FC8" xlink:to="lab_us-gaap_InventoryNet_E5C2093AF65C58909A0C22CE7EEF8FC8" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountingPoliciesAbstract_5D6E6694C174BF9A86D98DDE8DA998C7_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_5D6E6694C174BF9A86D98DDE8DA998C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Policies [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_5D6E6694C174BF9A86D98DDE8DA998C7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_5D6E6694C174BF9A86D98DDE8DA998C7" xlink:to="lab_us-gaap_AccountingPoliciesAbstract_5D6E6694C174BF9A86D98DDE8DA998C7" xlink:type="arc"/>
<link:label id="lab_dei_LegalEntityAxis_CD888FE07F410EB201688DDE8DA9B6BB_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis_CD888FE07F410EB201688DDE8DA9B6BB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Legal Entity [Axis] </link:label>
<link:label id="lab_dei_LegalEntityAxis_CD888FE07F410EB201688DDE8DA9B6BB_label_en-US" xlink:label="lab_dei_LegalEntityAxis_CD888FE07F410EB201688DDE8DA9B6BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Legal Entity [Axis] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_CD888FE07F410EB201688DDE8DA9B6BB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis_CD888FE07F410EB201688DDE8DA9B6BB" xlink:to="lab_dei_LegalEntityAxis_CD888FE07F410EB201688DDE8DA9B6BB" xlink:type="arc"/>
<link:label id="lab_dei_EntityDomain_925C660AC094065D2A2C8DDE8DAAE51E_terseLabel_en-US" xlink:label="lab_dei_EntityDomain_925C660AC094065D2A2C8DDE8DAAE51E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity [Domain] </link:label>
<link:label id="lab_dei_EntityDomain_925C660AC094065D2A2C8DDE8DAAE51E_label_en-US" xlink:label="lab_dei_EntityDomain_925C660AC094065D2A2C8DDE8DAAE51E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity [Domain] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_925C660AC094065D2A2C8DDE8DAAE51E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain_925C660AC094065D2A2C8DDE8DAAE51E" xlink:to="lab_dei_EntityDomain_925C660AC094065D2A2C8DDE8DAAE51E" xlink:type="arc"/>
<link:label id="lab_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B_terseLabel_en-US" xlink:label="lab_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Clarios (successor of Johnson Controls Battery Group, Inc.) </link:label>
<link:label id="lab_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B_label_en-US" xlink:label="lab_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Johnson Controls Battery Group, Inc. [Member] </link:label>
<link:label id="lab_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B_documentation_en-US" xlink:label="lab_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Johnson Controls Battery Group, Inc. [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_JohnsonControlsBatteryGroupIncMember" xlink:label="loc_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B" xlink:to="lab_aqms_JohnsonControlsBatteryGroupIncMember_B03712BC182D55033C158DDE8DAAAF3B" xlink:type="arc"/>
<link:label id="lab_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F_terseLabel_en-US" xlink:label="lab_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Ocean Partners USA, Inc. </link:label>
<link:label id="lab_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F_label_en-US" xlink:label="lab_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Ocean Partners USA [Member] </link:label>
<link:label id="lab_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F_documentation_en-US" xlink:label="lab_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Ocean Partners USA [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OceanPartnersUSAMember" xlink:label="loc_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F" xlink:to="lab_aqms_OceanPartnersUSAMember_4EB23095EF42347B44998DDE8DAAE62F" xlink:type="arc"/>
<link:label id="lab_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E_terseLabel_en-US" xlink:label="lab_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> P. Kay Metals </link:label>
<link:label id="lab_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E_label_en-US" xlink:label="lab_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Ocean Partners USA, Inc. [Member] </link:label>
<link:label id="lab_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E_documentation_en-US" xlink:label="lab_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Ocean Partners USA, Inc [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OceanPartnersUSAIncMember" xlink:label="loc_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E" xlink:to="lab_aqms_OceanPartnersUSAIncMember_23413C19C0ABF02F57048DDE8DAAE45E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_3A99F32B3C0DF7D3E49D8DDE8DAA538A_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_3A99F32B3C0DF7D3E49D8DDE8DAA538A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Axis] </link:label>
<link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_3A99F32B3C0DF7D3E49D8DDE8DAA538A_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_3A99F32B3C0DF7D3E49D8DDE8DAA538A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_3A99F32B3C0DF7D3E49D8DDE8DAA538A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_3A99F32B3C0DF7D3E49D8DDE8DAA538A" xlink:to="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_3A99F32B3C0DF7D3E49D8DDE8DAA538A" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_CD76A608662391813DD68DDE8DAB7F3B_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_CD76A608662391813DD68DDE8DAB7F3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Domain] </link:label>
<link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_CD76A608662391813DD68DDE8DAB7F3B_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_CD76A608662391813DD68DDE8DAB7F3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_CD76A608662391813DD68DDE8DAB7F3B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_CD76A608662391813DD68DDE8DAB7F3B" xlink:to="lab_us-gaap_ConcentrationRiskBenchmarkDomain_CD76A608662391813DD68DDE8DAB7F3B" xlink:type="arc"/>
<link:label id="lab_us-gaap_SalesRevenueNetMember_EFB3E4DBF921CB888B6B8DDE8DAB73A9_terseLabel_en-US" xlink:label="lab_us-gaap_SalesRevenueNetMember_EFB3E4DBF921CB888B6B8DDE8DAB73A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue </link:label>
<link:label id="lab_us-gaap_SalesRevenueNetMember_EFB3E4DBF921CB888B6B8DDE8DAB73A9_label_en-US" xlink:label="lab_us-gaap_SalesRevenueNetMember_EFB3E4DBF921CB888B6B8DDE8DAB73A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sales Revenue, Net [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SalesRevenueNetMember" xlink:label="loc_us-gaap_SalesRevenueNetMember_EFB3E4DBF921CB888B6B8DDE8DAB73A9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SalesRevenueNetMember_EFB3E4DBF921CB888B6B8DDE8DAB73A9" xlink:to="lab_us-gaap_SalesRevenueNetMember_EFB3E4DBF921CB888B6B8DDE8DAB73A9" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsReceivableMember_AB23D8DCD4A13741D3A48DDE8DAB2E9F_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableMember_AB23D8DCD4A13741D3A48DDE8DAB2E9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts Receivable </link:label>
<link:label id="lab_us-gaap_AccountsReceivableMember_AB23D8DCD4A13741D3A48DDE8DAB2E9F_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableMember_AB23D8DCD4A13741D3A48DDE8DAB2E9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableMember" xlink:label="loc_us-gaap_AccountsReceivableMember_AB23D8DCD4A13741D3A48DDE8DAB2E9F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableMember_AB23D8DCD4A13741D3A48DDE8DAB2E9F" xlink:to="lab_us-gaap_AccountsReceivableMember_AB23D8DCD4A13741D3A48DDE8DAB2E9F" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_7423119308AD0156F2ED8DDE8DACB304_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_7423119308AD0156F2ED8DDE8DACB304" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration risk </link:label>
<link:label id="lab_us-gaap_ConcentrationRiskPercentage1_7423119308AD0156F2ED8DDE8DACB304_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskPercentage1_7423119308AD0156F2ED8DDE8DACB304" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk, Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_7423119308AD0156F2ED8DDE8DACB304" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskPercentage1_7423119308AD0156F2ED8DDE8DACB304" xlink:to="lab_us-gaap_ConcentrationRiskPercentage1_7423119308AD0156F2ED8DDE8DACB304" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentAbstract_8E99540FA515451C0BD88B71AC7ED65C_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentAbstract_757F1E9BF3945A048A3D6F149947F8BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_757F1E9BF3945A048A3D6F149947F8BB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_757F1E9BF3945A048A3D6F149947F8BB" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentAbstract_757F1E9BF3945A048A3D6F149947F8BB" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_91D1D41C058BB5E269F28B71AC7F93EB_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1AE91F1F45F45A8CB8E2E4EC2423D00D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Axis] </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_91D1D41C058BB5E269F28B71AC7F93EB_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1AE91F1F45F45A8CB8E2E4EC2423D00D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1AE91F1F45F45A8CB8E2E4EC2423D00D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1AE91F1F45F45A8CB8E2E4EC2423D00D" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_1AE91F1F45F45A8CB8E2E4EC2423D00D" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_87AABC03798EB92DEF478B71AC7F80AC_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_67390C5EA9E05C09AD823A0407FCC743" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Domain] </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_87AABC03798EB92DEF478B71AC7F80AC_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_67390C5EA9E05C09AD823A0407FCC743" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_67390C5EA9E05C09AD823A0407FCC743" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_67390C5EA9E05C09AD823A0407FCC743" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_67390C5EA9E05C09AD823A0407FCC743" xlink:type="arc"/>
<link:label id="lab_aqms_OperationalEquipmentMember_FC0E1BF51B6F0C5CCB6B8B71AC7F8ED9_terseLabel_en-US" xlink:label="lab_aqms_OperationalEquipmentMember_9EEAD10426B65BF39149B78E45D48992" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operational equipment </link:label>
<link:label id="lab_aqms_OperationalEquipmentMember_FC0E1BF51B6F0C5CCB6B8B71AC7F8ED9_label_en-US" xlink:label="lab_aqms_OperationalEquipmentMember_9EEAD10426B65BF39149B78E45D48992" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operational Equipment [Member] </link:label>
<link:label id="lab_aqms_OperationalEquipmentMember_FC0E1BF51B6F0C5CCB6B8B71AC7F8ED9_documentation_en-US" xlink:label="lab_aqms_OperationalEquipmentMember_9EEAD10426B65BF39149B78E45D48992" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> It refers to operational equipment. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OperationalEquipmentMember" xlink:label="loc_aqms_OperationalEquipmentMember_9EEAD10426B65BF39149B78E45D48992" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OperationalEquipmentMember_9EEAD10426B65BF39149B78E45D48992" xlink:to="lab_aqms_OperationalEquipmentMember_9EEAD10426B65BF39149B78E45D48992" xlink:type="arc"/>
<link:label id="lab_aqms_LabEquipmentMember_4D3B5FDEDF14D64E91BF8B71AC7FB4AD_terseLabel_en-US" xlink:label="lab_aqms_LabEquipmentMember_6879F149C27E588D8BCF1D39F24C7938" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lab equipment </link:label>
<link:label id="lab_aqms_LabEquipmentMember_4D3B5FDEDF14D64E91BF8B71AC7FB4AD_label_en-US" xlink:label="lab_aqms_LabEquipmentMember_6879F149C27E588D8BCF1D39F24C7938" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lab Equipment [Member] </link:label>
<link:label id="lab_aqms_LabEquipmentMember_4D3B5FDEDF14D64E91BF8B71AC7FB4AD_documentation_en-US" xlink:label="lab_aqms_LabEquipmentMember_6879F149C27E588D8BCF1D39F24C7938" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Information about the lab equipment which related to used in lab for research purpose. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_LabEquipmentMember" xlink:label="loc_aqms_LabEquipmentMember_6879F149C27E588D8BCF1D39F24C7938" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_LabEquipmentMember_6879F149C27E588D8BCF1D39F24C7938" xlink:to="lab_aqms_LabEquipmentMember_6879F149C27E588D8BCF1D39F24C7938" xlink:type="arc"/>
<link:label id="lab_us-gaap_ComputerEquipmentMember_2D6423FC096360B421CD8B71AC803C3F_terseLabel_en-US" xlink:label="lab_us-gaap_ComputerEquipmentMember_B7626429C66C563C9B129E7AF9253914" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Computer equipment </link:label>
<link:label id="lab_us-gaap_ComputerEquipmentMember_2D6423FC096360B421CD8B71AC803C3F_label_en-US" xlink:label="lab_us-gaap_ComputerEquipmentMember_B7626429C66C563C9B129E7AF9253914" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Computer Equipment [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComputerEquipmentMember" xlink:label="loc_us-gaap_ComputerEquipmentMember_B7626429C66C563C9B129E7AF9253914" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComputerEquipmentMember_B7626429C66C563C9B129E7AF9253914" xlink:to="lab_us-gaap_ComputerEquipmentMember_B7626429C66C563C9B129E7AF9253914" xlink:type="arc"/>
<link:label id="lab_us-gaap_OfficeEquipmentMember_41F043FC72459AF651338B71AC805EB6_terseLabel_en-US" xlink:label="lab_us-gaap_OfficeEquipmentMember_CD85BE07DEB9520A85D55795E7D6C637" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Office furniture and equipment </link:label>
<link:label id="lab_us-gaap_OfficeEquipmentMember_41F043FC72459AF651338B71AC805EB6_label_en-US" xlink:label="lab_us-gaap_OfficeEquipmentMember_CD85BE07DEB9520A85D55795E7D6C637" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Office Equipment [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OfficeEquipmentMember" xlink:label="loc_us-gaap_OfficeEquipmentMember_CD85BE07DEB9520A85D55795E7D6C637" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OfficeEquipmentMember_CD85BE07DEB9520A85D55795E7D6C637" xlink:to="lab_us-gaap_OfficeEquipmentMember_CD85BE07DEB9520A85D55795E7D6C637" xlink:type="arc"/>
<link:label id="lab_us-gaap_LandMember_4554AD598A24F2A9695D8B71AC80D0AF_terseLabel_en-US" xlink:label="lab_us-gaap_LandMember_52D6248018615771B16B9B7AB5E6AA21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Land </link:label>
<link:label id="lab_us-gaap_LandMember_4554AD598A24F2A9695D8B71AC80D0AF_label_en-US" xlink:label="lab_us-gaap_LandMember_52D6248018615771B16B9B7AB5E6AA21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Land [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandMember" xlink:label="loc_us-gaap_LandMember_52D6248018615771B16B9B7AB5E6AA21" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandMember_52D6248018615771B16B9B7AB5E6AA21" xlink:to="lab_us-gaap_LandMember_52D6248018615771B16B9B7AB5E6AA21" xlink:type="arc"/>
<link:label id="lab_us-gaap_BuildingMember_D3ADAB6DB7C92413C69E8B71AC80DDB5_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingMember_964DF612B2B752DFAD290604899E0B66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Building </link:label>
<link:label id="lab_us-gaap_BuildingMember_D3ADAB6DB7C92413C69E8B71AC80DDB5_label_en-US" xlink:label="lab_us-gaap_BuildingMember_964DF612B2B752DFAD290604899E0B66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Building [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BuildingMember" xlink:label="loc_us-gaap_BuildingMember_964DF612B2B752DFAD290604899E0B66" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BuildingMember_964DF612B2B752DFAD290604899E0B66" xlink:to="lab_us-gaap_BuildingMember_964DF612B2B752DFAD290604899E0B66" xlink:type="arc"/>
<link:label id="lab_aqms_AssetRetirementCostsMember_50F29A921D9F6D43E4618B71AC8004DC_terseLabel_en-US" xlink:label="lab_aqms_AssetRetirementCostsMember_AA857A11722C5B19914B5B3702E98975" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Asset retirement cost </link:label>
<link:label id="lab_aqms_AssetRetirementCostsMember_50F29A921D9F6D43E4618B71AC8004DC_label_en-US" xlink:label="lab_aqms_AssetRetirementCostsMember_AA857A11722C5B19914B5B3702E98975" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asset Retirement Cost [Member] </link:label>
<link:label id="lab_aqms_AssetRetirementCostsMember_50F29A921D9F6D43E4618B71AC8004DC_documentation_en-US" xlink:label="lab_aqms_AssetRetirementCostsMember_AA857A11722C5B19914B5B3702E98975" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Refers to asset retirement costs. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_AssetRetirementCostsMember" xlink:label="loc_aqms_AssetRetirementCostsMember_AA857A11722C5B19914B5B3702E98975" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_AssetRetirementCostsMember_AA857A11722C5B19914B5B3702E98975" xlink:to="lab_aqms_AssetRetirementCostsMember_AA857A11722C5B19914B5B3702E98975" xlink:type="arc"/>
<link:label id="lab_aqms_EquipmentUnderConstructionMember_4F1350EA4EAD54059FC08B71AC80501F_terseLabel_en-US" xlink:label="lab_aqms_EquipmentUnderConstructionMember_577A6F6B43605E0E8B618966072E0FBD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equipment under construction </link:label>
<link:label id="lab_aqms_EquipmentUnderConstructionMember_4F1350EA4EAD54059FC08B71AC80501F_label_en-US" xlink:label="lab_aqms_EquipmentUnderConstructionMember_577A6F6B43605E0E8B618966072E0FBD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equipment Under Construction [Member] </link:label>
<link:label id="lab_aqms_EquipmentUnderConstructionMember_4F1350EA4EAD54059FC08B71AC80501F_documentation_en-US" xlink:label="lab_aqms_EquipmentUnderConstructionMember_577A6F6B43605E0E8B618966072E0FBD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Equipment under construction asset in process of being built. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_EquipmentUnderConstructionMember" xlink:label="loc_aqms_EquipmentUnderConstructionMember_577A6F6B43605E0E8B618966072E0FBD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_EquipmentUnderConstructionMember_577A6F6B43605E0E8B618966072E0FBD" xlink:to="lab_aqms_EquipmentUnderConstructionMember_577A6F6B43605E0E8B618966072E0FBD" xlink:type="arc"/>
<link:label id="lab_srt_RangeAxis_F101F72BDE3BEFCBE7368B71AC8107D4_terseLabel_en-US" xlink:label="lab_srt_RangeAxis_CF09B4646F555476A04849BE1FEA2B64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Range [Axis] </link:label>
<link:label id="lab_srt_RangeAxis_F101F72BDE3BEFCBE7368B71AC8107D4_label_en-US" xlink:label="lab_srt_RangeAxis_CF09B4646F555476A04849BE1FEA2B64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Range [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_CF09B4646F555476A04849BE1FEA2B64" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeAxis_CF09B4646F555476A04849BE1FEA2B64" xlink:to="lab_srt_RangeAxis_CF09B4646F555476A04849BE1FEA2B64" xlink:type="arc"/>
<link:label id="lab_srt_RangeMember_370C2C6AA3CBC6190FF18B71AC81CF51_terseLabel_en-US" xlink:label="lab_srt_RangeMember_E9C5620402C755A68417D4BF56637FCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Range [Domain] </link:label>
<link:label id="lab_srt_RangeMember_370C2C6AA3CBC6190FF18B71AC81CF51_label_en-US" xlink:label="lab_srt_RangeMember_E9C5620402C755A68417D4BF56637FCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Range [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_E9C5620402C755A68417D4BF56637FCB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeMember_E9C5620402C755A68417D4BF56637FCB" xlink:to="lab_srt_RangeMember_E9C5620402C755A68417D4BF56637FCB" xlink:type="arc"/>
<link:label id="lab_srt_MinimumMember_E1326B92ADD9CDE87EC08B71AC81D46C_terseLabel_en-US" xlink:label="lab_srt_MinimumMember_BFF0C87A33F05D17AA7D0F208F91EB88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Minimum </link:label>
<link:label id="lab_srt_MinimumMember_E1326B92ADD9CDE87EC08B71AC81D46C_label_en-US" xlink:label="lab_srt_MinimumMember_BFF0C87A33F05D17AA7D0F208F91EB88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Minimum [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_BFF0C87A33F05D17AA7D0F208F91EB88" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MinimumMember_BFF0C87A33F05D17AA7D0F208F91EB88" xlink:to="lab_srt_MinimumMember_BFF0C87A33F05D17AA7D0F208F91EB88" xlink:type="arc"/>
<link:label id="lab_srt_MaximumMember_8489110A3E32080B06D68B71AC81CA74_terseLabel_en-US" xlink:label="lab_srt_MaximumMember_0B0F93F3CA01586AB01D01658B3C4B5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Maximum </link:label>
<link:label id="lab_srt_MaximumMember_8489110A3E32080B06D68B71AC81CA74_label_en-US" xlink:label="lab_srt_MaximumMember_0B0F93F3CA01586AB01D01658B3C4B5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Maximum [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_0B0F93F3CA01586AB01D01658B3C4B5B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MaximumMember_0B0F93F3CA01586AB01D01658B3C4B5B" xlink:to="lab_srt_MaximumMember_0B0F93F3CA01586AB01D01658B3C4B5B" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_8F172D948AD8E65E6CC98B71AC823BA4_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_B71E6F601EC0507EB69A00B6AF7969B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Useful Life (Years) </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_8F172D948AD8E65E6CC98B71AC823BA4_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_B71E6F601EC0507EB69A00B6AF7969B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Useful Life </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_B71E6F601EC0507EB69A00B6AF7969B8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_B71E6F601EC0507EB69A00B6AF7969B8" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_B71E6F601EC0507EB69A00B6AF7969B8" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_BCF034A0573B8924C6DE8B71AC82852C_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_DFA407839E85527596A25AE7F08DF49C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and equipment, gross </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentGross_BCF034A0573B8924C6DE8B71AC82852C_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentGross_DFA407839E85527596A25AE7F08DF49C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_DFA407839E85527596A25AE7F08DF49C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentGross_DFA407839E85527596A25AE7F08DF49C" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentGross_DFA407839E85527596A25AE7F08DF49C" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_C2CA1160D0720B2313688B71AC822202_negatedLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_896441A460E857D0B5AE83E51B19D9C8" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Less: accumulated depreciation </link:label>
<link:label id="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_C2CA1160D0720B2313688B71AC822202_label_en-US" xlink:label="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_896441A460E857D0B5AE83E51B19D9C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_896441A460E857D0B5AE83E51B19D9C8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_896441A460E857D0B5AE83E51B19D9C8" xlink:to="lab_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_896441A460E857D0B5AE83E51B19D9C8" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_7EEDDB537DDCD1211C028B71AC828BBD_totalLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_55CCA307A0255CD39E2BADDA1AB54F35" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total property and equipment, net </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_7EEDDB537DDCD1211C028B71AC828BBD_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_55CCA307A0255CD39E2BADDA1AB54F35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_55CCA307A0255CD39E2BADDA1AB54F35" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_55CCA307A0255CD39E2BADDA1AB54F35" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_55CCA307A0255CD39E2BADDA1AB54F35" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfShortTermDebtTable_6F07726082AEFE03D13EFAB2F2269420_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShortTermDebtTable_6F07726082AEFE03D13EFAB2F2269420" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Short-term Debt [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfShortTermDebtTable_6F07726082AEFE03D13EFAB2F2269420_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShortTermDebtTable_6F07726082AEFE03D13EFAB2F2269420" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Short-term Debt [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShortTermDebtTable" xlink:label="loc_us-gaap_ScheduleOfShortTermDebtTable_6F07726082AEFE03D13EFAB2F2269420" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShortTermDebtTable_6F07726082AEFE03D13EFAB2F2269420" xlink:to="lab_us-gaap_ScheduleOfShortTermDebtTable_6F07726082AEFE03D13EFAB2F2269420" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentAxis_E563F7F2BACBE088DC45FAB2F226BF01_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_E563F7F2BACBE088DC45FAB2F226BF01" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentAxis_E563F7F2BACBE088DC45FAB2F226BF01_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_E563F7F2BACBE088DC45FAB2F226BF01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_E563F7F2BACBE088DC45FAB2F226BF01" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_E563F7F2BACBE088DC45FAB2F226BF01" xlink:to="lab_us-gaap_DebtInstrumentAxis_E563F7F2BACBE088DC45FAB2F226BF01" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentNameDomain_5B2B1C279BA80C727E8CFAB2F227FFCC_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_5B2B1C279BA80C727E8CFAB2F227FFCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentNameDomain_5B2B1C279BA80C727E8CFAB2F227FFCC_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_5B2B1C279BA80C727E8CFAB2F227FFCC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5B2B1C279BA80C727E8CFAB2F227FFCC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5B2B1C279BA80C727E8CFAB2F227FFCC" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_5B2B1C279BA80C727E8CFAB2F227FFCC" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConvertibleDebtMember_78B5BF39F713793DA1BEFAB2F227E4EE_terseLabel_en-US" xlink:label="lab_us-gaap_ConvertibleDebtMember_78B5BF39F713793DA1BEFAB2F227E4EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 11% Convertible Notes </link:label>
<link:label id="lab_us-gaap_ConvertibleDebtMember_78B5BF39F713793DA1BEFAB2F227E4EE_label_en-US" xlink:label="lab_us-gaap_ConvertibleDebtMember_78B5BF39F713793DA1BEFAB2F227E4EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Convertible Debt [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConvertibleDebtMember" xlink:label="loc_us-gaap_ConvertibleDebtMember_78B5BF39F713793DA1BEFAB2F227E4EE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConvertibleDebtMember_78B5BF39F713793DA1BEFAB2F227E4EE" xlink:to="lab_us-gaap_ConvertibleDebtMember_78B5BF39F713793DA1BEFAB2F227E4EE" xlink:type="arc"/>
<link:label id="lab_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5_terseLabel_en-US" xlink:label="lab_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interstate Battery Systems International, Inc. </link:label>
<link:label id="lab_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5_label_en-US" xlink:label="lab_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interstate Battery Systems International, Inc. [Member] </link:label>
<link:label id="lab_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5_documentation_en-US" xlink:label="lab_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The set of legal entities associated with a report. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_InterstateBatterySystemsInternationalIncMember" xlink:label="loc_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5" xlink:to="lab_aqms_InterstateBatterySystemsInternationalIncMember_3FA84CDA4913129A8137FAB2F227F6F5" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShortTermDebtLineItems_F5BC73231ADFFBAD0985FAB2F228444D_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtLineItems_F5BC73231ADFFBAD0985FAB2F228444D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Short-term Debt [Line Items] </link:label>
<link:label id="lab_us-gaap_ShortTermDebtLineItems_F5BC73231ADFFBAD0985FAB2F228444D_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtLineItems_F5BC73231ADFFBAD0985FAB2F228444D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtLineItems" xlink:label="loc_us-gaap_ShortTermDebtLineItems_F5BC73231ADFFBAD0985FAB2F228444D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtLineItems_F5BC73231ADFFBAD0985FAB2F228444D" xlink:to="lab_us-gaap_ShortTermDebtLineItems_F5BC73231ADFFBAD0985FAB2F228444D" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_62DBC11641F8D4F23FE1FAB2F2288183_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_62DBC11641F8D4F23FE1FAB2F2288183" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Convertible note interest rate </link:label>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_62DBC11641F8D4F23FE1FAB2F2288183_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_62DBC11641F8D4F23FE1FAB2F2288183" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Stated Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_62DBC11641F8D4F23FE1FAB2F2288183" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_62DBC11641F8D4F23FE1FAB2F2288183" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_62DBC11641F8D4F23FE1FAB2F2288183" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_0157D3B34E0EE68FA193FAB2F228CDAF_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_0157D3B34E0EE68FA193FAB2F228CDAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization period </link:label>
<link:label id="lab_us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_0157D3B34E0EE68FA193FAB2F228CDAF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_0157D3B34E0EE68FA193FAB2F228CDAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Convertible, Remaining Discount Amortization Period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1" xlink:label="loc_us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_0157D3B34E0EE68FA193FAB2F228CDAF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_0157D3B34E0EE68FA193FAB2F228CDAF" xlink:to="lab_us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_0157D3B34E0EE68FA193FAB2F228CDAF" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentMaturityDate_CC665FE86B2592A156BEFAB2F2289521_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_CC665FE86B2592A156BEFAB2F2289521" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Maturity date </link:label>
<link:label id="lab_us-gaap_DebtInstrumentMaturityDate_CC665FE86B2592A156BEFAB2F2289521_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentMaturityDate_CC665FE86B2592A156BEFAB2F2289521" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Maturity Date </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_CC665FE86B2592A156BEFAB2F2289521" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentMaturityDate_CC665FE86B2592A156BEFAB2F2289521" xlink:to="lab_us-gaap_DebtInstrumentMaturityDate_CC665FE86B2592A156BEFAB2F2289521" xlink:type="arc"/>
<link:label id="lab_us-gaap_RepaymentsOfConvertibleDebt_DC4278B4CB66EEB9BF55FAB2F22807A8_terseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfConvertibleDebt_DC4278B4CB66EEB9BF55FAB2F22807A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Outstanding principal and interest, convertible debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfConvertibleDebt" xlink:label="loc_us-gaap_RepaymentsOfConvertibleDebt_DC4278B4CB66EEB9BF55FAB2F22807A8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfConvertibleDebt_DC4278B4CB66EEB9BF55FAB2F22807A8" xlink:to="lab_us-gaap_RepaymentsOfConvertibleDebt_DC4278B4CB66EEB9BF55FAB2F22807A8" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAmortizationOfDeferredCharges_CB44E14178CDF28394B5FAB2F229148A_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAmortizationOfDeferredCharges_CB44E14178CDF28394B5FAB2F229148A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred financing expenses </link:label>
<link:label id="lab_us-gaap_OtherAmortizationOfDeferredCharges_CB44E14178CDF28394B5FAB2F229148A_label_en-US" xlink:label="lab_us-gaap_OtherAmortizationOfDeferredCharges_CB44E14178CDF28394B5FAB2F229148A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization of Other Deferred Charges </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAmortizationOfDeferredCharges" xlink:label="loc_us-gaap_OtherAmortizationOfDeferredCharges_CB44E14178CDF28394B5FAB2F229148A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAmortizationOfDeferredCharges_CB44E14178CDF28394B5FAB2F229148A" xlink:to="lab_us-gaap_OtherAmortizationOfDeferredCharges_CB44E14178CDF28394B5FAB2F229148A" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueRecognitionAndDeferredRevenueAbstract_3290D3E7F3C17BD510B506113F76D9C3_label_en-US" xlink:label="lab_us-gaap_RevenueRecognitionAndDeferredRevenueAbstract_AE9A45C332045B668CE723376F1C7438" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue Recognition and Deferred Revenue [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRecognitionAndDeferredRevenueAbstract" xlink:label="loc_us-gaap_RevenueRecognitionAndDeferredRevenueAbstract_AE9A45C332045B668CE723376F1C7438" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRecognitionAndDeferredRevenueAbstract_AE9A45C332045B668CE723376F1C7438" xlink:to="lab_us-gaap_RevenueRecognitionAndDeferredRevenueAbstract_AE9A45C332045B668CE723376F1C7438" xlink:type="arc"/>
<link:label id="lab_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_1184B34020F6C33D2DA706113F76D892_terseLabel_en-US" xlink:label="lab_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_AAC73D09EB0E5663B1B1F50E3E9453D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of revenue accounted products transferred to customers </link:label>
<link:label id="lab_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_1184B34020F6C33D2DA706113F76D892_label_en-US" xlink:label="lab_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_AAC73D09EB0E5663B1B1F50E3E9453D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Percentage of revenue accounted products transferred to customers </link:label>
<link:label id="lab_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_1184B34020F6C33D2DA706113F76D892_documentation_en-US" xlink:label="lab_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_AAC73D09EB0E5663B1B1F50E3E9453D5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> It refers to the percentage representing revenue accounted products transferred to customers. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers" xlink:label="loc_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_AAC73D09EB0E5663B1B1F50E3E9453D5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_AAC73D09EB0E5663B1B1F50E3E9453D5" xlink:to="lab_aqms_PercentageOfRevenueAccountedProductsTransferredToCustomers_AAC73D09EB0E5663B1B1F50E3E9453D5" xlink:type="arc"/>
<link:label id="lab_us-gaap_LeasesAbstract_EFF9422AC08388DD2233FAB4602E8757_label_en-US" xlink:label="lab_us-gaap_LeasesAbstract_EFF9422AC08388DD2233FAB4602E8757" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Leases [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeasesAbstract" xlink:label="loc_us-gaap_LeasesAbstract_EFF9422AC08388DD2233FAB4602E8757" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeasesAbstract_EFF9422AC08388DD2233FAB4602E8757" xlink:to="lab_us-gaap_LeasesAbstract_EFF9422AC08388DD2233FAB4602E8757" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasePayments_B419C7CA07ED5DCC06BCFAB4602E1DD6_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasePayments_B419C7CA07ED5DCC06BCFAB4602E1DD6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash paid for operating lease liabilities </link:label>
<link:label id="lab_us-gaap_OperatingLeasePayments_B419C7CA07ED5DCC06BCFAB4602E1DD6_label_en-US" xlink:label="lab_us-gaap_OperatingLeasePayments_B419C7CA07ED5DCC06BCFAB4602E1DD6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Payments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:label="loc_us-gaap_OperatingLeasePayments_B419C7CA07ED5DCC06BCFAB4602E1DD6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasePayments_B419C7CA07ED5DCC06BCFAB4602E1DD6" xlink:to="lab_us-gaap_OperatingLeasePayments_B419C7CA07ED5DCC06BCFAB4602E1DD6" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseCost_3B1630C2D6AAEDF9AD98FAB4602F73EB_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_3B1630C2D6AAEDF9AD98FAB4602F73EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease cost </link:label>
<link:label id="lab_us-gaap_OperatingLeaseCost_3B1630C2D6AAEDF9AD98FAB4602F73EB_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_3B1630C2D6AAEDF9AD98FAB4602F73EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:label="loc_us-gaap_OperatingLeaseCost_3B1630C2D6AAEDF9AD98FAB4602F73EB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseCost_3B1630C2D6AAEDF9AD98FAB4602F73EB" xlink:to="lab_us-gaap_OperatingLeaseCost_3B1630C2D6AAEDF9AD98FAB4602F73EB" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_AF468657912CFA237779FAB4602F6960_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_AF468657912CFA237779FAB4602F6960" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted-average remaining lease term </link:label>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_AF468657912CFA237779FAB4602F6960_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_AF468657912CFA237779FAB4602F6960" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Remaining Lease Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_AF468657912CFA237779FAB4602F6960" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_AF468657912CFA237779FAB4602F6960" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_AF468657912CFA237779FAB4602F6960" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_8294FB44381E44C29401FAB4602F4C8A_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_8294FB44381E44C29401FAB4602F4C8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted-average discount rate </link:label>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_8294FB44381E44C29401FAB4602F4C8A_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_8294FB44381E44C29401FAB4602F4C8A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Discount Rate, Percent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_8294FB44381E44C29401FAB4602F4C8A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_8294FB44381E44C29401FAB4602F4C8A" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_8294FB44381E44C29401FAB4602F4C8A" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_0905C636929EDD521B9ED096DCF3DB67_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract_0905C636929EDD521B9ED096DCF3DB67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Stockholders' Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_0905C636929EDD521B9ED096DCF3DB67" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_0905C636929EDD521B9ED096DCF3DB67" xlink:to="lab_us-gaap_StatementOfStockholdersEquityAbstract_0905C636929EDD521B9ED096DCF3DB67" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementEquityComponentsAxis_478C8064DD511B4D767ED096DCF35511_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_478C8064DD511B4D767ED096DCF35511" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Components [Axis] </link:label>
<link:label id="lab_us-gaap_StatementEquityComponentsAxis_478C8064DD511B4D767ED096DCF35511_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_478C8064DD511B4D767ED096DCF35511" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Components [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_478C8064DD511B4D767ED096DCF35511" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_478C8064DD511B4D767ED096DCF35511" xlink:to="lab_us-gaap_StatementEquityComponentsAxis_478C8064DD511B4D767ED096DCF35511" xlink:type="arc"/>
<link:label id="lab_us-gaap_EquityComponentDomain_6A41899BD0A36124BB10D096DCF33CCE_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_6A41899BD0A36124BB10D096DCF33CCE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>
<link:label id="lab_us-gaap_EquityComponentDomain_6A41899BD0A36124BB10D096DCF33CCE_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_6A41899BD0A36124BB10D096DCF33CCE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Component [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_6A41899BD0A36124BB10D096DCF33CCE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityComponentDomain_6A41899BD0A36124BB10D096DCF33CCE" xlink:to="lab_us-gaap_EquityComponentDomain_6A41899BD0A36124BB10D096DCF33CCE" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockMember_C82005BC8CE9A1EE7262D096DCF32AA8_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_C82005BC8CE9A1EE7262D096DCF32AA8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common Stock </link:label>
<link:label id="lab_us-gaap_CommonStockMember_C82005BC8CE9A1EE7262D096DCF32AA8_label_en-US" xlink:label="lab_us-gaap_CommonStockMember_C82005BC8CE9A1EE7262D096DCF32AA8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_C82005BC8CE9A1EE7262D096DCF32AA8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockMember_C82005BC8CE9A1EE7262D096DCF32AA8" xlink:to="lab_us-gaap_CommonStockMember_C82005BC8CE9A1EE7262D096DCF32AA8" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_B4D1C26681A9CD5C38C6D096DCF3A561_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_B4D1C26681A9CD5C38C6D096DCF3A561" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital </link:label>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_B4D1C26681A9CD5C38C6D096DCF3A561_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_B4D1C26681A9CD5C38C6D096DCF3A561" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_B4D1C26681A9CD5C38C6D096DCF3A561" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalMember_B4D1C26681A9CD5C38C6D096DCF3A561" xlink:to="lab_us-gaap_AdditionalPaidInCapitalMember_B4D1C26681A9CD5C38C6D096DCF3A561" xlink:type="arc"/>
<link:label id="lab_us-gaap_RetainedEarningsMember_7BF31F18CA4A9D67A582D096DCF3BF87_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_7BF31F18CA4A9D67A582D096DCF3BF87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Deficit </link:label>
<link:label id="lab_us-gaap_RetainedEarningsMember_7BF31F18CA4A9D67A582D096DCF3BF87_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsMember_7BF31F18CA4A9D67A582D096DCF3BF87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retained Earnings [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_7BF31F18CA4A9D67A582D096DCF3BF87" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsMember_7BF31F18CA4A9D67A582D096DCF3BF87" xlink:to="lab_us-gaap_RetainedEarningsMember_7BF31F18CA4A9D67A582D096DCF3BF87" xlink:type="arc"/>
<link:label id="lab_us-gaap_AwardTypeAxis_D735ED9FC6860C436393D096DCF3BAA7_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_D735ED9FC6860C436393D096DCF3BAA7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Type [Axis] </link:label>
<link:label id="lab_us-gaap_AwardTypeAxis_D735ED9FC6860C436393D096DCF3BAA7_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_D735ED9FC6860C436393D096DCF3BAA7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Award Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_D735ED9FC6860C436393D096DCF3BAA7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis_D735ED9FC6860C436393D096DCF3BAA7" xlink:to="lab_us-gaap_AwardTypeAxis_D735ED9FC6860C436393D096DCF3BAA7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CE3336481293B12573C2D096DCF347D4_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CE3336481293B12573C2D096DCF347D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Award [Domain] </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CE3336481293B12573C2D096DCF347D4_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CE3336481293B12573C2D096DCF347D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Award [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CE3336481293B12573C2D096DCF347D4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CE3336481293B12573C2D096DCF347D4" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CE3336481293B12573C2D096DCF347D4" xlink:type="arc"/>
<link:label id="lab_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1_terseLabel_en-US" xlink:label="lab_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Officers and Directors Purchase Plan </link:label>
<link:label id="lab_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1_label_en-US" xlink:label="lab_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Purchase Plan [Member] </link:label>
<link:label id="lab_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1_documentation_en-US" xlink:label="lab_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Stock Purchase Plan [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_StockPurchasePlanMember" xlink:label="loc_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1" xlink:to="lab_aqms_StockPurchasePlanMember_181152099C7DBCA57C21D096DCF387D1" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_2006B033193D01B13BF1D096DCF36FA9_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_2006B033193D01B13BF1D096DCF36FA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted Stock Units (RSUs) </link:label>
<link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_2006B033193D01B13BF1D096DCF36FA9_label_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_2006B033193D01B13BF1D096DCF36FA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Stock Units (RSUs) [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_2006B033193D01B13BF1D096DCF36FA9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_2006B033193D01B13BF1D096DCF36FA9" xlink:to="lab_us-gaap_RestrictedStockUnitsRSUMember_2006B033193D01B13BF1D096DCF36FA9" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsidiarySaleOfStockAxis_E7313FD8C08920C850BED096DCF3E87E_terseLabel_en-US" xlink:label="lab_us-gaap_SubsidiarySaleOfStockAxis_E7313FD8C08920C850BED096DCF3E87E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Sale of Stock [Axis] </link:label>
<link:label id="lab_us-gaap_SubsidiarySaleOfStockAxis_E7313FD8C08920C850BED096DCF3E87E_label_en-US" xlink:label="lab_us-gaap_SubsidiarySaleOfStockAxis_E7313FD8C08920C850BED096DCF3E87E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sale of Stock [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_E7313FD8C08920C850BED096DCF3E87E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_E7313FD8C08920C850BED096DCF3E87E" xlink:to="lab_us-gaap_SubsidiarySaleOfStockAxis_E7313FD8C08920C850BED096DCF3E87E" xlink:type="arc"/>
<link:label id="lab_us-gaap_SaleOfStockNameOfTransactionDomain_EDD74F5140FA28351D83D096DCF3CC86_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockNameOfTransactionDomain_EDD74F5140FA28351D83D096DCF3CC86" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Sale of Stock [Domain] </link:label>
<link:label id="lab_us-gaap_SaleOfStockNameOfTransactionDomain_EDD74F5140FA28351D83D096DCF3CC86_label_en-US" xlink:label="lab_us-gaap_SaleOfStockNameOfTransactionDomain_EDD74F5140FA28351D83D096DCF3CC86" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sale of Stock [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_EDD74F5140FA28351D83D096DCF3CC86" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_EDD74F5140FA28351D83D096DCF3CC86" xlink:to="lab_us-gaap_SaleOfStockNameOfTransactionDomain_EDD74F5140FA28351D83D096DCF3CC86" xlink:type="arc"/>
<link:label id="lab_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE_terseLabel_en-US" xlink:label="lab_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> January 2019 Public Offering </link:label>
<link:label id="lab_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE_label_en-US" xlink:label="lab_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> January 2019 Public Offering [Member] </link:label>
<link:label id="lab_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE_documentation_en-US" xlink:label="lab_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> January 2019 Public Offering [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_January2019PublicOfferingMember" xlink:label="loc_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE" xlink:to="lab_aqms_January2019PublicOfferingMember_F8B6D60A2E7C213054B9D096DCF365DE" xlink:type="arc"/>
<link:label id="lab_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6_terseLabel_en-US" xlink:label="lab_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> May 2019 Public Offering </link:label>
<link:label id="lab_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6_label_en-US" xlink:label="lab_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> May 2019 Public Offering [Member] </link:label>
<link:label id="lab_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6_documentation_en-US" xlink:label="lab_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> May 2019 Public Offering [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_May2019PublicOfferingMember" xlink:label="loc_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6" xlink:to="lab_aqms_May2019PublicOfferingMember_DA2D3719FBC938536753D096DCF3C7C6" xlink:type="arc"/>
<link:label id="lab_us-gaap_OverAllotmentOptionMember_AA6FF669300E1CB2AA2BD096DCF3E78A_terseLabel_en-US" xlink:label="lab_us-gaap_OverAllotmentOptionMember_AA6FF669300E1CB2AA2BD096DCF3E78A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Over-Allotment Option </link:label>
<link:label id="lab_us-gaap_OverAllotmentOptionMember_AA6FF669300E1CB2AA2BD096DCF3E78A_label_en-US" xlink:label="lab_us-gaap_OverAllotmentOptionMember_AA6FF669300E1CB2AA2BD096DCF3E78A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Over-Allotment Option [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OverAllotmentOptionMember" xlink:label="loc_us-gaap_OverAllotmentOptionMember_AA6FF669300E1CB2AA2BD096DCF3E78A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OverAllotmentOptionMember_AA6FF669300E1CB2AA2BD096DCF3E78A" xlink:to="lab_us-gaap_OverAllotmentOptionMember_AA6FF669300E1CB2AA2BD096DCF3E78A" xlink:type="arc"/>
<link:label id="lab_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC_terseLabel_en-US" xlink:label="lab_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2018 Public Offering </link:label>
<link:label id="lab_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC_label_en-US" xlink:label="lab_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 2018 Public Offering [Member] </link:label>
<link:label id="lab_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC_documentation_en-US" xlink:label="lab_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 2018 Public Offering [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_A2018PublicOfferingMember" xlink:label="loc_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC" xlink:to="lab_aqms_A2018PublicOfferingMember_F183D9BA0E654A41D3A3D096DCF3C8BC" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_D537DEB4DEE319C1603AD096DCF37E83_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_D537DEB4DEE319C1603AD096DCF37E83" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Stockholders' Equity [Roll Forward] </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_D537DEB4DEE319C1603AD096DCF37E83_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_D537DEB4DEE319C1603AD096DCF37E83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Stockholders' Equity [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_D537DEB4DEE319C1603AD096DCF37E83" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_D537DEB4DEE319C1603AD096DCF37E83" xlink:to="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_D537DEB4DEE319C1603AD096DCF37E83" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharesOutstanding_DBDB5D4A01DA9422EB2ED096DCF36E26_periodStartLabel_en-US" xlink:label="lab_us-gaap_SharesOutstanding_DBDB5D4A01DA9422EB2ED096DCF36E26" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning balance (in shares) </link:label>
<link:label id="lab_us-gaap_SharesOutstanding_DBDB5D4A01DA9422EB2ED096DCF36E26_label_en-US" xlink:label="lab_us-gaap_SharesOutstanding_DBDB5D4A01DA9422EB2ED096DCF36E26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Shares, Outstanding </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="loc_us-gaap_SharesOutstanding_DBDB5D4A01DA9422EB2ED096DCF36E26" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesOutstanding_DBDB5D4A01DA9422EB2ED096DCF36E26" xlink:to="lab_us-gaap_SharesOutstanding_DBDB5D4A01DA9422EB2ED096DCF36E26" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquity_0CFBD31879F6DF706A3FD096DCF3154E_periodStartLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_0CFBD31879F6DF706A3FD096DCF3154E" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning balance </link:label>
<link:label id="lab_us-gaap_StockholdersEquity_0CFBD31879F6DF706A3FD096DCF3154E_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_0CFBD31879F6DF706A3FD096DCF3154E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Attributable to Parent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_0CFBD31879F6DF706A3FD096DCF3154E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_0CFBD31879F6DF706A3FD096DCF3154E" xlink:to="lab_us-gaap_StockholdersEquity_0CFBD31879F6DF706A3FD096DCF3154E" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_3AE3CD1343B364417265D096DCF39EE3_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_3AE3CD1343B364417265D096DCF39EE3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation </link:label>
<link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_3AE3CD1343B364417265D096DCF39EE3_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_3AE3CD1343B364417265D096DCF39EE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_3AE3CD1343B364417265D096DCF39EE3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_3AE3CD1343B364417265D096DCF39EE3" xlink:to="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition_3AE3CD1343B364417265D096DCF39EE3" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_D7956D2064328D4B2FEDD096DCF39D84_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_D7956D2064328D4B2FEDD096DCF39D84" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warrants related to Veolia agreement </link:label>
<link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_D7956D2064328D4B2FEDD096DCF39D84_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_D7956D2064328D4B2FEDD096DCF39D84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments to Additional Paid in Capital, Warrant Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_D7956D2064328D4B2FEDD096DCF39D84" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_D7956D2064328D4B2FEDD096DCF39D84" xlink:to="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_D7956D2064328D4B2FEDD096DCF39D84" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_FAF1846A2CDA27223615D096DCF3D56B_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_FAF1846A2CDA27223615D096DCF3D56B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock issued during period (in shares) </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_FAF1846A2CDA27223615D096DCF3D56B_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_FAF1846A2CDA27223615D096DCF3D56B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Shares, New Issues </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_FAF1846A2CDA27223615D096DCF3D56B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_FAF1846A2CDA27223615D096DCF3D56B" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesNewIssues_FAF1846A2CDA27223615D096DCF3D56B" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_C74ACD5B3DEAA19A0C81D096DCF3B170_verboseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_C74ACD5B3DEAA19A0C81D096DCF3B170" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Common stock issued during period </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_C74ACD5B3DEAA19A0C81D096DCF3B170_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_C74ACD5B3DEAA19A0C81D096DCF3B170" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Value, New Issues </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_C74ACD5B3DEAA19A0C81D096DCF3B170" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_C74ACD5B3DEAA19A0C81D096DCF3B170" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_C74ACD5B3DEAA19A0C81D096DCF3B170" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_041F16A75F4AF26E4AF5D096DCF38C93_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_041F16A75F4AF26E4AF5D096DCF38C93" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock issued for consulting services (in shares) </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_041F16A75F4AF26E4AF5D096DCF38C93_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_041F16A75F4AF26E4AF5D096DCF38C93" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Shares, Issued for Services </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesIssuedForServices" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_041F16A75F4AF26E4AF5D096DCF38C93" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_041F16A75F4AF26E4AF5D096DCF38C93" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_041F16A75F4AF26E4AF5D096DCF38C93" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueIssuedForServices_E3F1EE56CE00FC200B37D096DCF31D1D_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueIssuedForServices_E3F1EE56CE00FC200B37D096DCF31D1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock issued for consulting services </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueIssuedForServices_E3F1EE56CE00FC200B37D096DCF31D1D_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueIssuedForServices_E3F1EE56CE00FC200B37D096DCF31D1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Value, Issued for Services </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueIssuedForServices" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueIssuedForServices_E3F1EE56CE00FC200B37D096DCF31D1D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueIssuedForServices_E3F1EE56CE00FC200B37D096DCF31D1D" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueIssuedForServices_E3F1EE56CE00FC200B37D096DCF31D1D" xlink:type="arc"/>
<link:label id="lab_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E_terseLabel_en-US" xlink:label="lab_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Modification of Interstate Battery warrant 1 </link:label>
<link:label id="lab_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E_label_en-US" xlink:label="lab_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Modification of Interstate Batteries Warrant 1 </link:label>
<link:label id="lab_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E_documentation_en-US" xlink:label="lab_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Modification of Interstate Batteries Warrant 1 </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_ModificationofInterstateBatteriesWarrant1" xlink:label="loc_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E" xlink:to="lab_aqms_ModificationofInterstateBatteriesWarrant1_2ACD4C1FB4B002CA580DD096DCF3C94E" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharesOutstanding_45EE46FC8600D0630490D096DCF30600_periodEndLabel_en-US" xlink:label="lab_us-gaap_SharesOutstanding_45EE46FC8600D0630490D096DCF30600" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending balance (in shares) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="loc_us-gaap_SharesOutstanding_45EE46FC8600D0630490D096DCF30600" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesOutstanding_45EE46FC8600D0630490D096DCF30600" xlink:to="lab_us-gaap_SharesOutstanding_45EE46FC8600D0630490D096DCF30600" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquity_D703C1B25719184202B4D096DCF37B3A_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_D703C1B25719184202B4D096DCF37B3A" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending Balance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_D703C1B25719184202B4D096DCF37B3A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_D703C1B25719184202B4D096DCF37B3A" xlink:to="lab_us-gaap_StockholdersEquity_D703C1B25719184202B4D096DCF37B3A" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_F6A3789378A1D9EAF3B7811744C7FA21_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_DA05F4CB1D3C5C0E9D64B6D74D5576CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Convertible note payable </link:label>
<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_F6A3789378A1D9EAF3B7811744C7FA21_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_DA05F4CB1D3C5C0E9D64B6D74D5576CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Face Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_DA05F4CB1D3C5C0E9D64B6D74D5576CB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_DA05F4CB1D3C5C0E9D64B6D74D5576CB" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_DA05F4CB1D3C5C0E9D64B6D74D5576CB" xlink:type="arc"/>
<link:label id="lab_aqms_AccruedInterestPayable_CC5CD95CD087E41B6CA0811744C775CF_terseLabel_en-US" xlink:label="lab_aqms_AccruedInterestPayable_AEE43D87F08B5AD18C253A388453EF2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued interest </link:label>
<link:label id="lab_aqms_AccruedInterestPayable_CC5CD95CD087E41B6CA0811744C775CF_label_en-US" xlink:label="lab_aqms_AccruedInterestPayable_AEE43D87F08B5AD18C253A388453EF2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued interest </link:label>
<link:label id="lab_aqms_AccruedInterestPayable_CC5CD95CD087E41B6CA0811744C775CF_documentation_en-US" xlink:label="lab_aqms_AccruedInterestPayable_AEE43D87F08B5AD18C253A388453EF2C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Gross amount of interest payable on debt. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_AccruedInterestPayable" xlink:label="loc_aqms_AccruedInterestPayable_AEE43D87F08B5AD18C253A388453EF2C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_AccruedInterestPayable_AEE43D87F08B5AD18C253A388453EF2C" xlink:to="lab_aqms_AccruedInterestPayable_AEE43D87F08B5AD18C253A388453EF2C" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredCostsCurrentAndNoncurrent_7A5483E6A05EED35F7D2811744C8D796_negatedLabel_en-US" xlink:label="lab_us-gaap_DeferredCostsCurrentAndNoncurrent_06CCD618678956748F382815A87F02E0" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Deferred financing costs, net </link:label>
<link:label id="lab_us-gaap_DeferredCostsCurrentAndNoncurrent_7A5483E6A05EED35F7D2811744C8D796_label_en-US" xlink:label="lab_us-gaap_DeferredCostsCurrentAndNoncurrent_06CCD618678956748F382815A87F02E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Costs </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredCostsCurrentAndNoncurrent" xlink:label="loc_us-gaap_DeferredCostsCurrentAndNoncurrent_06CCD618678956748F382815A87F02E0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredCostsCurrentAndNoncurrent_06CCD618678956748F382815A87F02E0" xlink:to="lab_us-gaap_DeferredCostsCurrentAndNoncurrent_06CCD618678956748F382815A87F02E0" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent_D1AC06CEFC2E0181E6DA811744C8AB63_negatedLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent_E6FEF49366BE529AAA7FEE16C2238BC6" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Note discount </link:label>
<link:label id="lab_us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent_D1AC06CEFC2E0181E6DA811744C8AB63_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent_E6FEF49366BE529AAA7FEE16C2238BC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Unamortized Discount, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent_E6FEF49366BE529AAA7FEE16C2238BC6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent_E6FEF49366BE529AAA7FEE16C2238BC6" xlink:to="lab_us-gaap_DebtInstrumentUnamortizedDiscountNoncurrent_E6FEF49366BE529AAA7FEE16C2238BC6" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConvertibleNotesPayableCurrent_904DF1A038D5C9BF5309811744C88C8E_verboseLabel_en-US" xlink:label="lab_us-gaap_ConvertibleNotesPayableCurrent_238C1BD2ECB254B6B566CBDADEC084F6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Less current portion </link:label>
<link:label id="lab_us-gaap_ConvertibleNotesPayableCurrent_904DF1A038D5C9BF5309811744C88C8E_label_en-US" xlink:label="lab_us-gaap_ConvertibleNotesPayableCurrent_238C1BD2ECB254B6B566CBDADEC084F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Convertible Notes Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConvertibleNotesPayableCurrent" xlink:label="loc_us-gaap_ConvertibleNotesPayableCurrent_238C1BD2ECB254B6B566CBDADEC084F6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConvertibleNotesPayableCurrent_238C1BD2ECB254B6B566CBDADEC084F6" xlink:to="lab_us-gaap_ConvertibleNotesPayableCurrent_238C1BD2ECB254B6B566CBDADEC084F6" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConvertibleLongTermNotesPayable_5DB837DF5D3B8A174550811744C88C84_terseLabel_en-US" xlink:label="lab_us-gaap_ConvertibleLongTermNotesPayable_1A0FAEB18FF359B8B02B2768EDF09EFF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Convertible note payable, non-current portion </link:label>
<link:label id="lab_us-gaap_ConvertibleLongTermNotesPayable_5DB837DF5D3B8A174550811744C88C84_label_en-US" xlink:label="lab_us-gaap_ConvertibleLongTermNotesPayable_1A0FAEB18FF359B8B02B2768EDF09EFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Convertible Notes Payable, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConvertibleLongTermNotesPayable" xlink:label="loc_us-gaap_ConvertibleLongTermNotesPayable_1A0FAEB18FF359B8B02B2768EDF09EFF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConvertibleLongTermNotesPayable_1A0FAEB18FF359B8B02B2768EDF09EFF" xlink:to="lab_us-gaap_ConvertibleLongTermNotesPayable_1A0FAEB18FF359B8B02B2768EDF09EFF" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeLeaseDescriptionTable_A4A8804446A22B0FF7888DDE8D075B73_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionTable_A4A8804446A22B0FF7888DDE8D075B73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Lease, Description [Table] </link:label>
<link:label id="lab_us-gaap_LesseeLeaseDescriptionTable_A4A8804446A22B0FF7888DDE8D075B73_label_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionTable_A4A8804446A22B0FF7888DDE8D075B73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Lease, Description [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_A4A8804446A22B0FF7888DDE8D075B73" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_A4A8804446A22B0FF7888DDE8D075B73" xlink:to="lab_us-gaap_LesseeLeaseDescriptionTable_A4A8804446A22B0FF7888DDE8D075B73" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeLeaseDescriptionLineItems_D19982E47B9343C331F68DDE8D08B0C6_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionLineItems_D19982E47B9343C331F68DDE8D08B0C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lessee, Lease, Description [Line Items] </link:label>
<link:label id="lab_us-gaap_LesseeLeaseDescriptionLineItems_D19982E47B9343C331F68DDE8D08B0C6_label_en-US" xlink:label="lab_us-gaap_LesseeLeaseDescriptionLineItems_D19982E47B9343C331F68DDE8D08B0C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Lease, Description [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_D19982E47B9343C331F68DDE8D08B0C6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_D19982E47B9343C331F68DDE8D08B0C6" xlink:to="lab_us-gaap_LesseeLeaseDescriptionLineItems_D19982E47B9343C331F68DDE8D08B0C6" xlink:type="arc"/>
<link:label id="lab_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE_terseLabel_en-US" xlink:label="lab_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of current finance leases </link:label>
<link:label id="lab_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE_label_en-US" xlink:label="lab_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Finance Lease, Number Of Leases </link:label>
<link:label id="lab_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE_documentation_en-US" xlink:label="lab_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Finance Lease, Number Of Leases </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_LesseeFinanceLeaseNumberOfLeases" xlink:label="loc_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE" xlink:to="lab_aqms_LesseeFinanceLeaseNumberOfLeases_6A929DBA2CFA94113F228DDE8D0886BE" xlink:type="arc"/>
<link:label id="lab_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6_terseLabel_en-US" xlink:label="lab_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of current operating leases </link:label>
<link:label id="lab_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6_label_en-US" xlink:label="lab_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Number Of Leases </link:label>
<link:label id="lab_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6_documentation_en-US" xlink:label="lab_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Number Of Leases </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_LesseeOperatingLeaseNumberOfLeases" xlink:label="loc_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6" xlink:to="lab_aqms_LesseeOperatingLeaseNumberOfLeases_913AAFD73ABEA43953218DDE8D08E6C6" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseTermOfContract_8C4FD2D8C4D0924B061C8DDE8D08A4DA_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseTermOfContract_8C4FD2D8C4D0924B061C8DDE8D08A4DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease contract terms </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseTermOfContract_8C4FD2D8C4D0924B061C8DDE8D08A4DA_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseTermOfContract_8C4FD2D8C4D0924B061C8DDE8D08A4DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Term of Contract </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseTermOfContract" xlink:label="loc_us-gaap_LesseeOperatingLeaseTermOfContract_8C4FD2D8C4D0924B061C8DDE8D08A4DA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseTermOfContract_8C4FD2D8C4D0924B061C8DDE8D08A4DA" xlink:to="lab_us-gaap_LesseeOperatingLeaseTermOfContract_8C4FD2D8C4D0924B061C8DDE8D08A4DA" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubleaseIncome_33F327A493F07DEE38B28DDE8D08EC92_terseLabel_en-US" xlink:label="lab_us-gaap_SubleaseIncome_33F327A493F07DEE38B28DDE8D08EC92" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Sublease income </link:label>
<link:label id="lab_us-gaap_SubleaseIncome_33F327A493F07DEE38B28DDE8D08EC92_label_en-US" xlink:label="lab_us-gaap_SubleaseIncome_33F327A493F07DEE38B28DDE8D08EC92" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sublease Income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubleaseIncome" xlink:label="loc_us-gaap_SubleaseIncome_33F327A493F07DEE38B28DDE8D08EC92" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubleaseIncome_33F327A493F07DEE38B28DDE8D08EC92" xlink:to="lab_us-gaap_SubleaseIncome_33F327A493F07DEE38B28DDE8D08EC92" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_6C5DF104D4D5A2E884E68DDE8D093A2F_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_6C5DF104D4D5A2E884E68DDE8D093A2F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Right-of-use asset </link:label>
<link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_6C5DF104D4D5A2E884E68DDE8D093A2F_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_6C5DF104D4D5A2E884E68DDE8D093A2F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Right-of-Use Asset </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_6C5DF104D4D5A2E884E68DDE8D093A2F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseRightOfUseAsset_6C5DF104D4D5A2E884E68DDE8D093A2F" xlink:to="lab_us-gaap_OperatingLeaseRightOfUseAsset_6C5DF104D4D5A2E884E68DDE8D093A2F" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiability_3E6FD4A5047C02EE01338DDE8D092EF0_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_3E6FD4A5047C02EE01338DDE8D092EF0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease, liability </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiability_3E6FD4A5047C02EE01338DDE8D092EF0_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_3E6FD4A5047C02EE01338DDE8D092EF0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_3E6FD4A5047C02EE01338DDE8D092EF0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiability_3E6FD4A5047C02EE01338DDE8D092EF0" xlink:to="lab_us-gaap_OperatingLeaseLiability_3E6FD4A5047C02EE01338DDE8D092EF0" xlink:type="arc"/>
<link:label id="lab_us-gaap_EquityAbstract_F9042968AD6EC83FD8068117448C1EC5_label_en-US" xlink:label="lab_us-gaap_EquityAbstract_0FDA3E10D0075214902769083FF69191" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityAbstract" xlink:label="loc_us-gaap_EquityAbstract_0FDA3E10D0075214902769083FF69191" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityAbstract_0FDA3E10D0075214902769083FF69191" xlink:to="lab_us-gaap_EquityAbstract_0FDA3E10D0075214902769083FF69191" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_4AC1DBF164A874B457B58117448C5A6C_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_2F405A6A694C546AA1A8E3A087F74E42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of the allocation of stock-based compensation </link:label>
<link:label id="lab_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_4AC1DBF164A874B457B58117448C5A6C_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_2F405A6A694C546AA1A8E3A087F74E42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_2F405A6A694C546AA1A8E3A087F74E42" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_2F405A6A694C546AA1A8E3A087F74E42" xlink:to="lab_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_2F405A6A694C546AA1A8E3A087F74E42" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_F11EA0EF340609DA7F8D8117448C0DE4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_216281A426C0576BBC1FB900DEE76B97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of assumptions used in the Black-Scholes-Merton option-pricing model </link:label>
<link:label id="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_F11EA0EF340609DA7F8D8117448C0DE4_label_en-US" xlink:label="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_216281A426C0576BBC1FB900DEE76B97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_216281A426C0576BBC1FB900DEE76B97" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_216281A426C0576BBC1FB900DEE76B97" xlink:to="lab_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_216281A426C0576BBC1FB900DEE76B97" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetRetirementObligationDisclosureTextBlock_C2994C2EF7040004B37902318E86F24E_terseLabel_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationDisclosureTextBlock_F81BA94EED315CC38498C2C0041695D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Asset Retirement Obligation </link:label>
<link:label id="lab_us-gaap_AssetRetirementObligationDisclosureTextBlock_C2994C2EF7040004B37902318E86F24E_label_en-US" xlink:label="lab_us-gaap_AssetRetirementObligationDisclosureTextBlock_F81BA94EED315CC38498C2C0041695D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asset Retirement Obligation Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetRetirementObligationDisclosureTextBlock" xlink:label="loc_us-gaap_AssetRetirementObligationDisclosureTextBlock_F81BA94EED315CC38498C2C0041695D8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetRetirementObligationDisclosureTextBlock_F81BA94EED315CC38498C2C0041695D8" xlink:to="lab_us-gaap_AssetRetirementObligationDisclosureTextBlock_F81BA94EED315CC38498C2C0041695D8" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_EDA4155DE274C459D54B8117448F5239_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_083ACE19F3DE50D79D0DC3BFBB666F0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity </link:label>
<link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_EDA4155DE274C459D54B8117448F5239_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_083ACE19F3DE50D79D0DC3BFBB666F0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Note Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_083ACE19F3DE50D79D0DC3BFBB666F0C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_083ACE19F3DE50D79D0DC3BFBB666F0C" xlink:to="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_083ACE19F3DE50D79D0DC3BFBB666F0C" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_F560B87A4D19A684F43E06113F76492F_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_EC75A410DEA55C1C82CC0BA25B0137F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenue Recognition </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_F560B87A4D19A684F43E06113F76492F_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_EC75A410DEA55C1C82CC0BA25B0137F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_EC75A410DEA55C1C82CC0BA25B0137F5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_EC75A410DEA55C1C82CC0BA25B0137F5" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_EC75A410DEA55C1C82CC0BA25B0137F5" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtDisclosureTextBlock_DA23BB3657A5944DD7C3811744BC28E8_terseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_C7A3924802FD5E8DBFF22D12919DBE5F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Notes Payable </link:label>
<link:label id="lab_us-gaap_DebtDisclosureTextBlock_DA23BB3657A5944DD7C3811744BC28E8_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_C7A3924802FD5E8DBFF22D12919DBE5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_C7A3924802FD5E8DBFF22D12919DBE5F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureTextBlock_C7A3924802FD5E8DBFF22D12919DBE5F" xlink:to="lab_us-gaap_DebtDisclosureTextBlock_C7A3924802FD5E8DBFF22D12919DBE5F" xlink:type="arc"/>
<link:label id="lab_us-gaap_LeaseCostTableTextBlock_F5602E4C2289E7F1E57A811744A49A8C_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseCostTableTextBlock_D1ABBC452EC759B1B6D4F61FA9DE09DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Right-of-Use Assets and Related Liabilities </link:label>
<link:label id="lab_us-gaap_LeaseCostTableTextBlock_F5602E4C2289E7F1E57A811744A49A8C_label_en-US" xlink:label="lab_us-gaap_LeaseCostTableTextBlock_D1ABBC452EC759B1B6D4F61FA9DE09DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lease, Cost [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseCostTableTextBlock" xlink:label="loc_us-gaap_LeaseCostTableTextBlock_D1ABBC452EC759B1B6D4F61FA9DE09DD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseCostTableTextBlock_D1ABBC452EC759B1B6D4F61FA9DE09DD" xlink:to="lab_us-gaap_LeaseCostTableTextBlock_D1ABBC452EC759B1B6D4F61FA9DE09DD" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_9605FB3958F3F5584B10811744A46963_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_171A3F084009596C9BF0273BC88AB14E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Maturities of Lease Liabilities </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_9605FB3958F3F5584B10811744A46963_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_171A3F084009596C9BF0273BC88AB14E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Maturity [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_171A3F084009596C9BF0273BC88AB14E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_171A3F084009596C9BF0273BC88AB14E" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_171A3F084009596C9BF0273BC88AB14E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_0FE2452DE0C06344345881174505755D_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_995E505E848F54989D63AA8B1C42FBDF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of computation of potentially dilutive securities </link:label>
<link:label id="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_0FE2452DE0C06344345881174505755D_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_995E505E848F54989D63AA8B1C42FBDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_995E505E848F54989D63AA8B1C42FBDF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_995E505E848F54989D63AA8B1C42FBDF" xlink:to="lab_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_995E505E848F54989D63AA8B1C42FBDF" xlink:type="arc"/>
<link:label id="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_6618B7FA41F18DF8CD0281174506A8E0_terseLabel_en-US" xlink:label="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_72C32D0788175796889978F917EE685A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of concentration of credit risk </link:label>
<link:label id="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_6618B7FA41F18DF8CD0281174506A8E0_label_en-US" xlink:label="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_72C32D0788175796889978F917EE685A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedules of Concentration of Risk, by Risk Factor [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock" xlink:label="loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_72C32D0788175796889978F917EE685A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_72C32D0788175796889978F917EE685A" xlink:to="lab_us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock_72C32D0788175796889978F917EE685A" xlink:type="arc"/>
<link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_BD26DC27EE6577CA2459811744FC7876_terseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0CF92B9F2DE85C6F8C6247A3473852C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Antidilutive Securities [Axis] </link:label>
<link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_BD26DC27EE6577CA2459811744FC7876_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0CF92B9F2DE85C6F8C6247A3473852C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Antidilutive Securities [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0CF92B9F2DE85C6F8C6247A3473852C3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0CF92B9F2DE85C6F8C6247A3473852C3" xlink:to="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_0CF92B9F2DE85C6F8C6247A3473852C3" xlink:type="arc"/>
<link:label id="lab_us-gaap_AntidilutiveSecuritiesNameDomain_19848BBE2CC88294EE4A811744FCC6C7_terseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesNameDomain_BC9E1A9EA83B554BAD1DD84EF7C7676C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Antidilutive Securities, Name [Domain] </link:label>
<link:label id="lab_us-gaap_AntidilutiveSecuritiesNameDomain_19848BBE2CC88294EE4A811744FCC6C7_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesNameDomain_BC9E1A9EA83B554BAD1DD84EF7C7676C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Antidilutive Securities, Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_BC9E1A9EA83B554BAD1DD84EF7C7676C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_BC9E1A9EA83B554BAD1DD84EF7C7676C" xlink:to="lab_us-gaap_AntidilutiveSecuritiesNameDomain_BC9E1A9EA83B554BAD1DD84EF7C7676C" xlink:type="arc"/>
<link:label id="lab_aqms_ConvertibleNotePrincipalMember_367DE8A18E277FDD7F4F811744FC5103_terseLabel_en-US" xlink:label="lab_aqms_ConvertibleNotePrincipalMember_1FA282F758A157D0878CEA5611D4DF13" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Convertible note - principal </link:label>
<link:label id="lab_aqms_ConvertibleNotePrincipalMember_367DE8A18E277FDD7F4F811744FC5103_label_en-US" xlink:label="lab_aqms_ConvertibleNotePrincipalMember_1FA282F758A157D0878CEA5611D4DF13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Convertible Note - Principal [Member] </link:label>
<link:label id="lab_aqms_ConvertibleNotePrincipalMember_367DE8A18E277FDD7F4F811744FC5103_documentation_en-US" xlink:label="lab_aqms_ConvertibleNotePrincipalMember_1FA282F758A157D0878CEA5611D4DF13" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Convertible Note - Principal [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_ConvertibleNotePrincipalMember" xlink:label="loc_aqms_ConvertibleNotePrincipalMember_1FA282F758A157D0878CEA5611D4DF13" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_ConvertibleNotePrincipalMember_1FA282F758A157D0878CEA5611D4DF13" xlink:to="lab_aqms_ConvertibleNotePrincipalMember_1FA282F758A157D0878CEA5611D4DF13" xlink:type="arc"/>
<link:label id="lab_aqms_OptionstoPurchaseCommonStockMember_AA6C83637CE084D42A4F811744FDFC41_terseLabel_en-US" xlink:label="lab_aqms_OptionstoPurchaseCommonStockMember_06E518EB328255ACBAD2B899D1F297E0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Options to purchase common stock </link:label>
<link:label id="lab_aqms_OptionstoPurchaseCommonStockMember_AA6C83637CE084D42A4F811744FDFC41_label_en-US" xlink:label="lab_aqms_OptionstoPurchaseCommonStockMember_06E518EB328255ACBAD2B899D1F297E0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Options to Purchase Common Stock [Member] </link:label>
<link:label id="lab_aqms_OptionstoPurchaseCommonStockMember_AA6C83637CE084D42A4F811744FDFC41_documentation_en-US" xlink:label="lab_aqms_OptionstoPurchaseCommonStockMember_06E518EB328255ACBAD2B899D1F297E0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Options to Purchase Common Stock [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OptionstoPurchaseCommonStockMember" xlink:label="loc_aqms_OptionstoPurchaseCommonStockMember_06E518EB328255ACBAD2B899D1F297E0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OptionstoPurchaseCommonStockMember_06E518EB328255ACBAD2B899D1F297E0" xlink:to="lab_aqms_OptionstoPurchaseCommonStockMember_06E518EB328255ACBAD2B899D1F297E0" xlink:type="arc"/>
<link:label id="lab_aqms_UnvestedRestrictedStockUnitsMember_C874F5BF3F687853D3E9811744FDAE51_terseLabel_en-US" xlink:label="lab_aqms_UnvestedRestrictedStockUnitsMember_31F67837B95E5E97A8B7AEACDBC799BA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unvested restricted stock units </link:label>
<link:label id="lab_aqms_UnvestedRestrictedStockUnitsMember_C874F5BF3F687853D3E9811744FDAE51_label_en-US" xlink:label="lab_aqms_UnvestedRestrictedStockUnitsMember_31F67837B95E5E97A8B7AEACDBC799BA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unvested Restricted Stock Units [Member] </link:label>
<link:label id="lab_aqms_UnvestedRestrictedStockUnitsMember_C874F5BF3F687853D3E9811744FDAE51_documentation_en-US" xlink:label="lab_aqms_UnvestedRestrictedStockUnitsMember_31F67837B95E5E97A8B7AEACDBC799BA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Unvested Restricted Stock Units [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_UnvestedRestrictedStockUnitsMember" xlink:label="loc_aqms_UnvestedRestrictedStockUnitsMember_31F67837B95E5E97A8B7AEACDBC799BA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_UnvestedRestrictedStockUnitsMember_31F67837B95E5E97A8B7AEACDBC799BA" xlink:to="lab_aqms_UnvestedRestrictedStockUnitsMember_31F67837B95E5E97A8B7AEACDBC799BA" xlink:type="arc"/>
<link:label id="lab_aqms_FinancingWarrantstoPurchaseCommonStockMember_4610803A82E7829A11A4811744FDAEB7_terseLabel_en-US" xlink:label="lab_aqms_FinancingWarrantstoPurchaseCommonStockMember_CCC1B1EF1A9254C4A54CAF1435FCD3DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Financing warrants to purchase common stock </link:label>
<link:label id="lab_aqms_FinancingWarrantstoPurchaseCommonStockMember_4610803A82E7829A11A4811744FDAEB7_label_en-US" xlink:label="lab_aqms_FinancingWarrantstoPurchaseCommonStockMember_CCC1B1EF1A9254C4A54CAF1435FCD3DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Financing Warrants to Purchase Common Stock [Member] </link:label>
<link:label id="lab_aqms_FinancingWarrantstoPurchaseCommonStockMember_4610803A82E7829A11A4811744FDAEB7_documentation_en-US" xlink:label="lab_aqms_FinancingWarrantstoPurchaseCommonStockMember_CCC1B1EF1A9254C4A54CAF1435FCD3DF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Financing Warrants to Purchase Common Stock [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_FinancingWarrantstoPurchaseCommonStockMember" xlink:label="loc_aqms_FinancingWarrantstoPurchaseCommonStockMember_CCC1B1EF1A9254C4A54CAF1435FCD3DF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_FinancingWarrantstoPurchaseCommonStockMember_CCC1B1EF1A9254C4A54CAF1435FCD3DF" xlink:to="lab_aqms_FinancingWarrantstoPurchaseCommonStockMember_CCC1B1EF1A9254C4A54CAF1435FCD3DF" xlink:type="arc"/>
<link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_C5B57369ED4C64E8A61C811744FD0F95_terseLabel_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_60B58EDEA0695025B1259F95CF7FEA81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total potential dilutive securities (in shares) </link:label>
<link:label id="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_C5B57369ED4C64E8A61C811744FD0F95_label_en-US" xlink:label="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_60B58EDEA0695025B1259F95CF7FEA81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_60B58EDEA0695025B1259F95CF7FEA81" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_60B58EDEA0695025B1259F95CF7FEA81" xlink:to="lab_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_60B58EDEA0695025B1259F95CF7FEA81" xlink:type="arc"/>
<link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_B17506280390D5A1C13081174508626C_terseLabel_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_4BBA42F5C2BE50CAAA05D6F30877FA07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Basis of Presentation </link:label>
<link:label id="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_B17506280390D5A1C13081174508626C_label_en-US" xlink:label="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_4BBA42F5C2BE50CAAA05D6F30877FA07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Basis of Accounting, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_4BBA42F5C2BE50CAAA05D6F30877FA07" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_4BBA42F5C2BE50CAAA05D6F30877FA07" xlink:to="lab_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_4BBA42F5C2BE50CAAA05D6F30877FA07" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_A889686CC4BF82008EEA811745088F5A_terseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_85EC550E7D785E1AA1FD61E3D6D507F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Principles of consolidation </link:label>
<link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_A889686CC4BF82008EEA811745088F5A_label_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_85EC550E7D785E1AA1FD61E3D6D507F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock_85EC550E7D785E1AA1FD61E3D6D507F3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationPolicyTextBlock_85EC550E7D785E1AA1FD61E3D6D507F3" xlink:to="lab_us-gaap_ConsolidationPolicyTextBlock_85EC550E7D785E1AA1FD61E3D6D507F3" xlink:type="arc"/>
<link:label id="lab_us-gaap_UseOfEstimates_3253A6A1005372ED04DE81174509B999_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_9674FBC07F5953DA8859D48601F69164" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Use of estimates </link:label>
<link:label id="lab_us-gaap_UseOfEstimates_3253A6A1005372ED04DE81174509B999_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_9674FBC07F5953DA8859D48601F69164" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Use of Estimates, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_9674FBC07F5953DA8859D48601F69164" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UseOfEstimates_9674FBC07F5953DA8859D48601F69164" xlink:to="lab_us-gaap_UseOfEstimates_9674FBC07F5953DA8859D48601F69164" xlink:type="arc"/>
<link:label id="lab_us-gaap_EarningsPerSharePolicyTextBlock_C6593AB9D76A08B30EA9811745093D24_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerSharePolicyTextBlock_4CCE424BA7AB5B87A8CBF2C62D96AB9D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net loss per share </link:label>
<link:label id="lab_us-gaap_EarningsPerSharePolicyTextBlock_C6593AB9D76A08B30EA9811745093D24_label_en-US" xlink:label="lab_us-gaap_EarningsPerSharePolicyTextBlock_4CCE424BA7AB5B87A8CBF2C62D96AB9D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="loc_us-gaap_EarningsPerSharePolicyTextBlock_4CCE424BA7AB5B87A8CBF2C62D96AB9D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerSharePolicyTextBlock_4CCE424BA7AB5B87A8CBF2C62D96AB9D" xlink:to="lab_us-gaap_EarningsPerSharePolicyTextBlock_4CCE424BA7AB5B87A8CBF2C62D96AB9D" xlink:type="arc"/>
<link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_69A10D86A12A4FA4793F811745097351_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_5E5AF64CA3FF5F6FB2D4B5C64D0C8584" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Segment and geographic information </link:label>
<link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_69A10D86A12A4FA4793F811745097351_label_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_5E5AF64CA3FF5F6FB2D4B5C64D0C8584" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segment Reporting, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_5E5AF64CA3FF5F6FB2D4B5C64D0C8584" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_5E5AF64CA3FF5F6FB2D4B5C64D0C8584" xlink:to="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_5E5AF64CA3FF5F6FB2D4B5C64D0C8584" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConcentrationRiskCreditRisk_A521F472067FE71756D381174509F29C_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskCreditRisk_1BEE09839DFC5C16A3489F148287496C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration of credit risk </link:label>
<link:label id="lab_us-gaap_ConcentrationRiskCreditRisk_A521F472067FE71756D381174509F29C_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskCreditRisk_1BEE09839DFC5C16A3489F148287496C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk, Credit Risk, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConcentrationRiskCreditRisk" xlink:label="loc_us-gaap_ConcentrationRiskCreditRisk_1BEE09839DFC5C16A3489F148287496C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConcentrationRiskCreditRisk_1BEE09839DFC5C16A3489F148287496C" xlink:to="lab_us-gaap_ConcentrationRiskCreditRisk_1BEE09839DFC5C16A3489F148287496C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_ABD690840D4A7773A843811745092968_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BBA866B6B680557086A40274C94B8F0A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Recent accounting pronouncements </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_ABD690840D4A7773A843811745092968_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BBA866B6B680557086A40274C94B8F0A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BBA866B6B680557086A40274C94B8F0A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BBA866B6B680557086A40274C94B8F0A" xlink:to="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_BBA866B6B680557086A40274C94B8F0A" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_3866B4038C39EB642E34E5CA15FDF3A6_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_3866B4038C39EB642E34E5CA15FDF3A6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Expected stock volatility </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_3866B4038C39EB642E34E5CA15FDF3A6_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_3866B4038C39EB642E34E5CA15FDF3A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_3866B4038C39EB642E34E5CA15FDF3A6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_3866B4038C39EB642E34E5CA15FDF3A6" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_3866B4038C39EB642E34E5CA15FDF3A6" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1AB1DF2AC4963AAFF101E5CA15FECA72_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1AB1DF2AC4963AAFF101E5CA15FECA72" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Risk free interest rate </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1AB1DF2AC4963AAFF101E5CA15FECA72_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1AB1DF2AC4963AAFF101E5CA15FECA72" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1AB1DF2AC4963AAFF101E5CA15FECA72" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1AB1DF2AC4963AAFF101E5CA15FECA72" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_1AB1DF2AC4963AAFF101E5CA15FECA72" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0E18B7E83B6D200C73FDE5CA15FE22C6_verboseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0E18B7E83B6D200C73FDE5CA15FE22C6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Expected years until exercise </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0E18B7E83B6D200C73FDE5CA15FE22C6_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0E18B7E83B6D200C73FDE5CA15FE22C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0E18B7E83B6D200C73FDE5CA15FE22C6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0E18B7E83B6D200C73FDE5CA15FE22C6" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_0E18B7E83B6D200C73FDE5CA15FE22C6" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F3F1E35817A87F92D596E5CA15FE4B08_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F3F1E35817A87F92D596E5CA15FE4B08" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dividend yield </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F3F1E35817A87F92D596E5CA15FE4B08_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F3F1E35817A87F92D596E5CA15FE4B08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F3F1E35817A87F92D596E5CA15FE4B08" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F3F1E35817A87F92D596E5CA15FE4B08" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F3F1E35817A87F92D596E5CA15FE4B08" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtTextBlock_7543F796521A13396B49811744CDC0EE_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtTextBlock_1D6C2836AAB55E5CA7E19089D2FC86FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Convertible Note Payable </link:label>
<link:label id="lab_us-gaap_LongTermDebtTextBlock_7543F796521A13396B49811744CDC0EE_label_en-US" xlink:label="lab_us-gaap_LongTermDebtTextBlock_1D6C2836AAB55E5CA7E19089D2FC86FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtTextBlock" xlink:label="loc_us-gaap_LongTermDebtTextBlock_1D6C2836AAB55E5CA7E19089D2FC86FD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtTextBlock_1D6C2836AAB55E5CA7E19089D2FC86FD" xlink:to="lab_us-gaap_LongTermDebtTextBlock_1D6C2836AAB55E5CA7E19089D2FC86FD" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfDebtTableTextBlock_420766C54130B4CB3CB4811744BAFBF0_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtTableTextBlock_488D689ED8B9575792432B6FC2D54045" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of notes payable </link:label>
<link:label id="lab_us-gaap_ScheduleOfDebtTableTextBlock_420766C54130B4CB3CB4811744BAFBF0_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtTableTextBlock_488D689ED8B9575792432B6FC2D54045" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Debt [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDebtTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtTableTextBlock_488D689ED8B9575792432B6FC2D54045" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDebtTableTextBlock_488D689ED8B9575792432B6FC2D54045" xlink:to="lab_us-gaap_ScheduleOfDebtTableTextBlock_488D689ED8B9575792432B6FC2D54045" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6AAEEFF9F8EFF6CD1B3ED096DC575494_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6AAEEFF9F8EFF6CD1B3ED096DC575494" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Lease Liabilities, Payments Due </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6AAEEFF9F8EFF6CD1B3ED096DC575494_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6AAEEFF9F8EFF6CD1B3ED096DC575494" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease Liabilities, Payments Due [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract" xlink:label="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6AAEEFF9F8EFF6CD1B3ED096DC575494" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6AAEEFF9F8EFF6CD1B3ED096DC575494" xlink:to="lab_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_6AAEEFF9F8EFF6CD1B3ED096DC575494" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_31B78164E1C5D4B58E24D096DC57CC22_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_31B78164E1C5D4B58E24D096DC57CC22" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_31B78164E1C5D4B58E24D096DC57CC22_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_31B78164E1C5D4B58E24D096DC57CC22" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Two </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_31B78164E1C5D4B58E24D096DC57CC22" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_31B78164E1C5D4B58E24D096DC57CC22" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_31B78164E1C5D4B58E24D096DC57CC22" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_BDA594AB23CCE1966B1DD096DC576AAF_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_BDA594AB23CCE1966B1DD096DC576AAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_BDA594AB23CCE1966B1DD096DC576AAF_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_BDA594AB23CCE1966B1DD096DC576AAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Three </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_BDA594AB23CCE1966B1DD096DC576AAF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_BDA594AB23CCE1966B1DD096DC576AAF" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_BDA594AB23CCE1966B1DD096DC576AAF" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_16676654ACF1A44945A4D096DC57A75A_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_16676654ACF1A44945A4D096DC57A75A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_16676654ACF1A44945A4D096DC57A75A_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_16676654ACF1A44945A4D096DC57A75A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Four </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_16676654ACF1A44945A4D096DC57A75A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_16676654ACF1A44945A4D096DC57A75A" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_16676654ACF1A44945A4D096DC57A75A" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_17FF5E91481062E3BEE1D096DC579287_totalLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_17FF5E91481062E3BEE1D096DC579287" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total payments due </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_17FF5E91481062E3BEE1D096DC579287_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_17FF5E91481062E3BEE1D096DC579287" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_17FF5E91481062E3BEE1D096DC579287" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_17FF5E91481062E3BEE1D096DC579287" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_17FF5E91481062E3BEE1D096DC579287" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_C032DF6735C1F08444D9D096DC57ED7C_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_C032DF6735C1F08444D9D096DC57ED7C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less imputed interest </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_C032DF6735C1F08444D9D096DC57ED7C_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_C032DF6735C1F08444D9D096DC57ED7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Undiscounted Excess Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_C032DF6735C1F08444D9D096DC57ED7C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_C032DF6735C1F08444D9D096DC57ED7C" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_C032DF6735C1F08444D9D096DC57ED7C" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiability_A0D00D423CB5A261CC60D096DC570BAC_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_A0D00D423CB5A261CC60D096DC570BAC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total lease liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_A0D00D423CB5A261CC60D096DC570BAC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiability_A0D00D423CB5A261CC60D096DC570BAC" xlink:to="lab_us-gaap_OperatingLeaseLiability_A0D00D423CB5A261CC60D096DC570BAC" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_5225B9E0C32A32293CF0D096DC5745DE_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_5225B9E0C32A32293CF0D096DC5745DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current operating lease liabilities </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_5225B9E0C32A32293CF0D096DC5745DE_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_5225B9E0C32A32293CF0D096DC5745DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_5225B9E0C32A32293CF0D096DC5745DE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityCurrent_5225B9E0C32A32293CF0D096DC5745DE" xlink:to="lab_us-gaap_OperatingLeaseLiabilityCurrent_5225B9E0C32A32293CF0D096DC5745DE" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_57AB563B3C903323AC72D096DC5727CD_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_57AB563B3C903323AC72D096DC5727CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-current operating lease liabilities </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_57AB563B3C903323AC72D096DC5727CD_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_57AB563B3C903323AC72D096DC5727CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_57AB563B3C903323AC72D096DC5727CD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_57AB563B3C903323AC72D096DC5727CD" xlink:to="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_57AB563B3C903323AC72D096DC5727CD" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityCurrent_22A55C1ED9BEBFBD9A8BD096DC57A684_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityCurrent_22A55C1ED9BEBFBD9A8BD096DC57A684" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finance liability, current </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityCurrent_22A55C1ED9BEBFBD9A8BD096DC57A684_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityCurrent_22A55C1ED9BEBFBD9A8BD096DC57A684" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Liability, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_22A55C1ED9BEBFBD9A8BD096DC57A684" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityCurrent_22A55C1ED9BEBFBD9A8BD096DC57A684" xlink:to="lab_us-gaap_FinanceLeaseLiabilityCurrent_22A55C1ED9BEBFBD9A8BD096DC57A684" xlink:type="arc"/>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_304C087D0C194FFE43A4D096DC57B465_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_304C087D0C194FFE43A4D096DC57B465" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finance liability, noncurrent </link:label>
<link:label id="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_304C087D0C194FFE43A4D096DC57B465_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_304C087D0C194FFE43A4D096DC57B465" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finance Lease, Liability, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_304C087D0C194FFE43A4D096DC57B465" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_304C087D0C194FFE43A4D096DC57B465" xlink:to="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_304C087D0C194FFE43A4D096DC57B465" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeasesTextBlock_4DE6D7D5A2F91476CCCD811744A7ABF8_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeasesTextBlock_FE6FB40E20BD5BDDB4EF55D4961A9FAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Leases </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeasesTextBlock_4DE6D7D5A2F91476CCCD811744A7ABF8_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeasesTextBlock_FE6FB40E20BD5BDDB4EF55D4961A9FAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Leases [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeOperatingLeasesTextBlock" xlink:label="loc_us-gaap_LesseeOperatingLeasesTextBlock_FE6FB40E20BD5BDDB4EF55D4961A9FAB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeasesTextBlock_FE6FB40E20BD5BDDB4EF55D4961A9FAB" xlink:to="lab_us-gaap_LesseeOperatingLeasesTextBlock_FE6FB40E20BD5BDDB4EF55D4961A9FAB" xlink:type="arc"/>
<link:label id="lab_us-gaap_CapitalLeaseObligationsMember_DF3AADF7536624DFD7C7811744AA7384_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_B73245EA825355238A3888B64E2AF1F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Capital Equipment Leases </link:label>
<link:label id="lab_us-gaap_CapitalLeaseObligationsMember_DF3AADF7536624DFD7C7811744AA7384_label_en-US" xlink:label="lab_us-gaap_CapitalLeaseObligationsMember_B73245EA825355238A3888B64E2AF1F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Capital Lease Obligations [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeaseObligationsMember" xlink:label="loc_us-gaap_CapitalLeaseObligationsMember_B73245EA825355238A3888B64E2AF1F7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeaseObligationsMember_B73245EA825355238A3888B64E2AF1F7" xlink:to="lab_us-gaap_CapitalLeaseObligationsMember_B73245EA825355238A3888B64E2AF1F7" xlink:type="arc"/>
<link:label id="lab_aqms_GreenBankMember_9C8F13E0285C73F540CB811744ABD1FB_terseLabel_en-US" xlink:label="lab_aqms_GreenBankMember_919D1B833E4D55179D9191C5AA260098" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Green Bank </link:label>
<link:label id="lab_aqms_GreenBankMember_9C8F13E0285C73F540CB811744ABD1FB_label_en-US" xlink:label="lab_aqms_GreenBankMember_919D1B833E4D55179D9191C5AA260098" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Green Bank [Member] </link:label>
<link:label id="lab_aqms_GreenBankMember_9C8F13E0285C73F540CB811744ABD1FB_documentation_en-US" xlink:label="lab_aqms_GreenBankMember_919D1B833E4D55179D9191C5AA260098" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Information related to legal entity. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_GreenBankMember" xlink:label="loc_aqms_GreenBankMember_919D1B833E4D55179D9191C5AA260098" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_GreenBankMember_919D1B833E4D55179D9191C5AA260098" xlink:to="lab_aqms_GreenBankMember_919D1B833E4D55179D9191C5AA260098" xlink:type="arc"/>
<link:label id="lab_us-gaap_NotesPayableCurrent_C910047E039AFE026D3E811744AC3A53_verboseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableCurrent_5078429E6D9455538E3F37838A96479E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total notes payable, current portion </link:label>
<link:label id="lab_us-gaap_NotesPayableCurrent_C910047E039AFE026D3E811744AC3A53_label_en-US" xlink:label="lab_us-gaap_NotesPayableCurrent_5078429E6D9455538E3F37838A96479E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Notes Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableCurrent" xlink:label="loc_us-gaap_NotesPayableCurrent_5078429E6D9455538E3F37838A96479E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesPayableCurrent_5078429E6D9455538E3F37838A96479E" xlink:to="lab_us-gaap_NotesPayableCurrent_5078429E6D9455538E3F37838A96479E" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermNotesPayable_FDD8D52DA5F5E4F10B03811744ACEF29_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermNotesPayable_52F5DEA8DC93504CA9B0B48C1723B9F6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total notes payable, non-current portion </link:label>
<link:label id="lab_us-gaap_LongTermNotesPayable_FDD8D52DA5F5E4F10B03811744ACEF29_label_en-US" xlink:label="lab_us-gaap_LongTermNotesPayable_52F5DEA8DC93504CA9B0B48C1723B9F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Notes Payable, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermNotesPayable" xlink:label="loc_us-gaap_LongTermNotesPayable_52F5DEA8DC93504CA9B0B48C1723B9F6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermNotesPayable_52F5DEA8DC93504CA9B0B48C1723B9F6" xlink:to="lab_us-gaap_LongTermNotesPayable_52F5DEA8DC93504CA9B0B48C1723B9F6" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryDisclosureTextBlock_F30B2BE537A8E2847492811744ED56B4_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryDisclosureTextBlock_8D4E748A1C4557B99E05E27EA3ACC920" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Inventory </link:label>
<link:label id="lab_us-gaap_InventoryDisclosureTextBlock_F30B2BE537A8E2847492811744ED56B4_label_en-US" xlink:label="lab_us-gaap_InventoryDisclosureTextBlock_8D4E748A1C4557B99E05E27EA3ACC920" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="loc_us-gaap_InventoryDisclosureTextBlock_8D4E748A1C4557B99E05E27EA3ACC920" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryDisclosureTextBlock_8D4E748A1C4557B99E05E27EA3ACC920" xlink:to="lab_us-gaap_InventoryDisclosureTextBlock_8D4E748A1C4557B99E05E27EA3ACC920" xlink:type="arc"/>
<link:label id="lab_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02_terseLabel_en-US" xlink:label="lab_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock offering transaction cost </link:label>
<link:label id="lab_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02_label_en-US" xlink:label="lab_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Offering Transaction Cost </link:label>
<link:label id="lab_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02_documentation_en-US" xlink:label="lab_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Stock Offering Transaction Cost </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_StockOfferingTransactionCost" xlink:label="loc_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02" xlink:to="lab_aqms_StockOfferingTransactionCost_D8FFF1E9BB43F194F263FAACECA6DE02" xlink:type="arc"/>
<link:label id="lab_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF_terseLabel_en-US" xlink:label="lab_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Overallotment related to transaction cost </link:label>
<link:label id="lab_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF_label_en-US" xlink:label="lab_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Allocated Stock Offering Transaction Cost </link:label>
<link:label id="lab_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF_documentation_en-US" xlink:label="lab_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Allocated Stock Offering Transaction Cost </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_AllocatedStockOfferingTransactionCost" xlink:label="loc_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF" xlink:to="lab_aqms_AllocatedStockOfferingTransactionCost_FB225EAAC4033C93C6B5FAACECA71AEF" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_7E97E149615BD47AF4D55F532478443A_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_7E97E149615BD47AF4D55F532478443A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies Disclosure [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_7E97E149615BD47AF4D55F532478443A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_7E97E149615BD47AF4D55F532478443A" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_7E97E149615BD47AF4D55F532478443A" xlink:type="arc"/>
<link:label id="lab_us-gaap_TitleOfIndividualAxis_2785D2FFF3D1266DA8435F532479DF7E_terseLabel_en-US" xlink:label="lab_us-gaap_TitleOfIndividualAxis_2785D2FFF3D1266DA8435F532479DF7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Title of Individual [Axis] </link:label>
<link:label id="lab_us-gaap_TitleOfIndividualAxis_2785D2FFF3D1266DA8435F532479DF7E_label_en-US" xlink:label="lab_us-gaap_TitleOfIndividualAxis_2785D2FFF3D1266DA8435F532479DF7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Title of Individual [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:label="loc_us-gaap_TitleOfIndividualAxis_2785D2FFF3D1266DA8435F532479DF7E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TitleOfIndividualAxis_2785D2FFF3D1266DA8435F532479DF7E" xlink:to="lab_us-gaap_TitleOfIndividualAxis_2785D2FFF3D1266DA8435F532479DF7E" xlink:type="arc"/>
<link:label id="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_90F8EDDEC8CE50310EBB5F532479F36A_terseLabel_en-US" xlink:label="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_90F8EDDEC8CE50310EBB5F532479F36A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Relationship to Entity [Domain] </link:label>
<link:label id="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_90F8EDDEC8CE50310EBB5F532479F36A_label_en-US" xlink:label="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_90F8EDDEC8CE50310EBB5F532479F36A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Relationship to Entity [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:label="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_90F8EDDEC8CE50310EBB5F532479F36A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_90F8EDDEC8CE50310EBB5F532479F36A" xlink:to="lab_us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_90F8EDDEC8CE50310EBB5F532479F36A" xlink:type="arc"/>
<link:label id="lab_us-gaap_ChiefOperatingOfficerMember_31530960760C4232F5555F532479BFB5_terseLabel_en-US" xlink:label="lab_us-gaap_ChiefOperatingOfficerMember_31530960760C4232F5555F532479BFB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Mr. Mould </link:label>
<link:label id="lab_us-gaap_ChiefOperatingOfficerMember_31530960760C4232F5555F532479BFB5_label_en-US" xlink:label="lab_us-gaap_ChiefOperatingOfficerMember_31530960760C4232F5555F532479BFB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Chief Operating Officer [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChiefOperatingOfficerMember" xlink:label="loc_us-gaap_ChiefOperatingOfficerMember_31530960760C4232F5555F532479BFB5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ChiefOperatingOfficerMember_31530960760C4232F5555F532479BFB5" xlink:to="lab_us-gaap_ChiefOperatingOfficerMember_31530960760C4232F5555F532479BFB5" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_71751470DD8EFDB1B9675F53247A9FCF_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_71751470DD8EFDB1B9675F53247A9FCF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party [Axis] </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_71751470DD8EFDB1B9675F53247A9FCF_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_71751470DD8EFDB1B9675F53247A9FCF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_71751470DD8EFDB1B9675F53247A9FCF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_71751470DD8EFDB1B9675F53247A9FCF" xlink:to="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_71751470DD8EFDB1B9675F53247A9FCF" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyDomain_E1B9F124E31D856FE28D5F53247A46A4_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_E1B9F124E31D856FE28D5F53247A46A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party [Domain] </link:label>
<link:label id="lab_us-gaap_RelatedPartyDomain_E1B9F124E31D856FE28D5F53247A46A4_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_E1B9F124E31D856FE28D5F53247A46A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_E1B9F124E31D856FE28D5F53247A46A4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyDomain_E1B9F124E31D856FE28D5F53247A46A4" xlink:to="lab_us-gaap_RelatedPartyDomain_E1B9F124E31D856FE28D5F53247A46A4" xlink:type="arc"/>
<link:label id="lab_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA_terseLabel_en-US" xlink:label="lab_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dr. Stephen Clarke </link:label>
<link:label id="lab_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA_label_en-US" xlink:label="lab_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Dr. Stephen Clarke [Member] </link:label>
<link:label id="lab_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA_documentation_en-US" xlink:label="lab_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_FormerPresidentAndChiefExecutiveOfficerMember" xlink:label="loc_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA" xlink:to="lab_aqms_FormerPresidentAndChiefExecutiveOfficerMember_552381269B6DA83202645F53247B5BCA" xlink:type="arc"/>
<link:label id="lab_us-gaap_TypeOfArrangementAxis_FBA543165EDD8CF48CDF5F53247BAAF3_terseLabel_en-US" xlink:label="lab_us-gaap_TypeOfArrangementAxis_FBA543165EDD8CF48CDF5F53247BAAF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Type of Arrangement and Non-arrangement Transactions [Axis] </link:label>
<link:label id="lab_us-gaap_TypeOfArrangementAxis_FBA543165EDD8CF48CDF5F53247BAAF3_label_en-US" xlink:label="lab_us-gaap_TypeOfArrangementAxis_FBA543165EDD8CF48CDF5F53247BAAF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Type of Arrangement and Non-arrangement Transactions [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfArrangementAxis" xlink:label="loc_us-gaap_TypeOfArrangementAxis_FBA543165EDD8CF48CDF5F53247BAAF3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TypeOfArrangementAxis_FBA543165EDD8CF48CDF5F53247BAAF3" xlink:to="lab_us-gaap_TypeOfArrangementAxis_FBA543165EDD8CF48CDF5F53247BAAF3" xlink:type="arc"/>
<link:label id="lab_us-gaap_ArrangementsAndNonarrangementTransactionsMember_A43B54005240FC83C16B5F53247B2CB7_terseLabel_en-US" xlink:label="lab_us-gaap_ArrangementsAndNonarrangementTransactionsMember_A43B54005240FC83C16B5F53247B2CB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Arrangements and Non-arrangement Transactions [Domain] </link:label>
<link:label id="lab_us-gaap_ArrangementsAndNonarrangementTransactionsMember_A43B54005240FC83C16B5F53247B2CB7_label_en-US" xlink:label="lab_us-gaap_ArrangementsAndNonarrangementTransactionsMember_A43B54005240FC83C16B5F53247B2CB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Arrangements and Non-arrangement Transactions [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ArrangementsAndNonarrangementTransactionsMember" xlink:label="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_A43B54005240FC83C16B5F53247B2CB7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ArrangementsAndNonarrangementTransactionsMember_A43B54005240FC83C16B5F53247B2CB7" xlink:to="lab_us-gaap_ArrangementsAndNonarrangementTransactionsMember_A43B54005240FC83C16B5F53247B2CB7" xlink:type="arc"/>
<link:label id="lab_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446_terseLabel_en-US" xlink:label="lab_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Employment Agreement </link:label>
<link:label id="lab_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446_label_en-US" xlink:label="lab_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Employment Agreement [Member] </link:label>
<link:label id="lab_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446_documentation_en-US" xlink:label="lab_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Information by category of arrangement, including but not limited to collaborative arrangements and non-collaborative arrangements. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_EmploymentAgreementMember" xlink:label="loc_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446" xlink:to="lab_aqms_EmploymentAgreementMember_100D9E3CEDF9ABD2D4C65F53247B9446" xlink:type="arc"/>
<link:label id="lab_us-gaap_SeveranceCosts1_8C4F08F21F88D1729F335F53247B314D_terseLabel_en-US" xlink:label="lab_us-gaap_SeveranceCosts1_8C4F08F21F88D1729F335F53247B314D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Severance benefits </link:label>
<link:label id="lab_us-gaap_SeveranceCosts1_8C4F08F21F88D1729F335F53247B314D_label_en-US" xlink:label="lab_us-gaap_SeveranceCosts1_8C4F08F21F88D1729F335F53247B314D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Severance Costs </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeveranceCosts1" xlink:label="loc_us-gaap_SeveranceCosts1_8C4F08F21F88D1729F335F53247B314D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeveranceCosts1_8C4F08F21F88D1729F335F53247B314D" xlink:to="lab_us-gaap_SeveranceCosts1_8C4F08F21F88D1729F335F53247B314D" xlink:type="arc"/>
<link:label id="lab_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5_terseLabel_en-US" xlink:label="lab_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Severance benefits, period of consideration </link:label>
<link:label id="lab_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5_label_en-US" xlink:label="lab_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Severance Costs, Period Of Consideration </link:label>
<link:label id="lab_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5_documentation_en-US" xlink:label="lab_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Severance Costs, Period Of Consideration </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_SeveranceCostsPeriodOfConsideration" xlink:label="loc_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5" xlink:to="lab_aqms_SeveranceCostsPeriodOfConsideration_6FE111D76CF0165C30D15F53247B98B5" xlink:type="arc"/>
<link:label id="lab_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040_terseLabel_en-US" xlink:label="lab_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Exercise period of stock options </link:label>
<link:label id="lab_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040_label_en-US" xlink:label="lab_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Exercise Period Of Stock Options </link:label>
<link:label id="lab_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040_documentation_en-US" xlink:label="lab_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Exercise Period Of Stock Options </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_ExercisePeriodOfStockOptions" xlink:label="loc_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040" xlink:to="lab_aqms_ExercisePeriodOfStockOptions_E98D4DF0255D741A4B1D5F53247BD040" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockOptionPlanExpense_6588883499F749F407CE5F53247B762F_terseLabel_en-US" xlink:label="lab_us-gaap_StockOptionPlanExpense_6588883499F749F407CE5F53247B762F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Expense related to stock option awards </link:label>
<link:label id="lab_us-gaap_StockOptionPlanExpense_6588883499F749F407CE5F53247B762F_label_en-US" xlink:label="lab_us-gaap_StockOptionPlanExpense_6588883499F749F407CE5F53247B762F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock or Unit Option Plan Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockOptionPlanExpense" xlink:label="loc_us-gaap_StockOptionPlanExpense_6588883499F749F407CE5F53247B762F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockOptionPlanExpense_6588883499F749F407CE5F53247B762F" xlink:to="lab_us-gaap_StockOptionPlanExpense_6588883499F749F407CE5F53247B762F" xlink:type="arc"/>
<link:label id="lab_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047_terseLabel_en-US" xlink:label="lab_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash severance payment </link:label>
<link:label id="lab_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047_label_en-US" xlink:label="lab_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> One Time Severance Benefit </link:label>
<link:label id="lab_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047_documentation_en-US" xlink:label="lab_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> One Time Severance Benefit </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OneTimeSeveranceBenefit" xlink:label="loc_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047" xlink:to="lab_aqms_OneTimeSeveranceBenefit_6B28BE2299026B3DB56D5F53247B4047" xlink:type="arc"/>
<link:label id="lab_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376_terseLabel_en-US" xlink:label="lab_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted stock units awarded as part of severance </link:label>
<link:label id="lab_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376_label_en-US" xlink:label="lab_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Severance Payment, Restricted Stock Units, Period Of Award </link:label>
<link:label id="lab_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376_documentation_en-US" xlink:label="lab_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Severance Payment, Restricted Stock Units, Period Of Award </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward" xlink:label="loc_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376" xlink:to="lab_aqms_SeverancePaymentRestrictedStockUnitsPeriodOfAward_C3755DCBA6ADCA8E75445F53247B0376" xlink:type="arc"/>
<link:label id="lab_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF_terseLabel_en-US" xlink:label="lab_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common shares, volume weighted-average price </link:label>
<link:label id="lab_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF_label_en-US" xlink:label="lab_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Shares Volume Weighted Average Price </link:label>
<link:label id="lab_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF_documentation_en-US" xlink:label="lab_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Common Shares Volume Weighted Average Price </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_CommonSharesVolumeWeightedAveragePrice" xlink:label="loc_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF" xlink:to="lab_aqms_CommonSharesVolumeWeightedAveragePrice_1C89DDE96B82604EF4335F53247BE4AF" xlink:type="arc"/>
<link:label id="lab_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB_terseLabel_en-US" xlink:label="lab_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Severance restricted stock units, weighted average price, number of trading days </link:label>
<link:label id="lab_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB_label_en-US" xlink:label="lab_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Severance, Restricted Stock Units, Weighted Average Stock Price, Trading Days </link:label>
<link:label id="lab_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB_documentation_en-US" xlink:label="lab_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Severance, Restricted Stock Units, Weighted Average Stock Price, Trading Days </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays" xlink:label="loc_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB" xlink:to="lab_aqms_SeveranceRestrictedStockUnitsWeightedAverageStockPriceTradingDays_A7B31E9E75F9CA0BF0335F5AC79BCFBB" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsAbstract_C733D761D4FA8ED8290DF5B872D13AD5_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_C733D761D4FA8ED8290DF5B872D13AD5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> ASSETS </link:label>
<link:label id="lab_us-gaap_AssetsAbstract_C733D761D4FA8ED8290DF5B872D13AD5_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_C733D761D4FA8ED8290DF5B872D13AD5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_C733D761D4FA8ED8290DF5B872D13AD5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract_C733D761D4FA8ED8290DF5B872D13AD5" xlink:to="lab_us-gaap_AssetsAbstract_C733D761D4FA8ED8290DF5B872D13AD5" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsCurrentAbstract_61509DEF570CBED34E64F5B872D13DB0_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_61509DEF570CBED34E64F5B872D13DB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current assets </link:label>
<link:label id="lab_us-gaap_AssetsCurrentAbstract_61509DEF570CBED34E64F5B872D13DB0_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_61509DEF570CBED34E64F5B872D13DB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_61509DEF570CBED34E64F5B872D13DB0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrentAbstract_61509DEF570CBED34E64F5B872D13DB0" xlink:to="lab_us-gaap_AssetsCurrentAbstract_61509DEF570CBED34E64F5B872D13DB0" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_B30B58015FB3A0D78E5DF5B872D2F89E_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_B30B58015FB3A0D78E5DF5B872D2F89E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and cash equivalents </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_B30B58015FB3A0D78E5DF5B872D2F89E_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_B30B58015FB3A0D78E5DF5B872D2F89E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_B30B58015FB3A0D78E5DF5B872D2F89E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_B30B58015FB3A0D78E5DF5B872D2F89E" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_B30B58015FB3A0D78E5DF5B872D2F89E" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsReceivableNetCurrent_120F8D8870D76F974ED9F5B872D2DD47_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_120F8D8870D76F974ED9F5B872D2DD47" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts receivable, net </link:label>
<link:label id="lab_us-gaap_AccountsReceivableNetCurrent_120F8D8870D76F974ED9F5B872D2DD47_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableNetCurrent_120F8D8870D76F974ED9F5B872D2DD47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, Net, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_120F8D8870D76F974ED9F5B872D2DD47" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_120F8D8870D76F974ED9F5B872D2DD47" xlink:to="lab_us-gaap_AccountsReceivableNetCurrent_120F8D8870D76F974ED9F5B872D2DD47" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryNet_E44F17DBDE301A7101FCF5B872FCFA4A_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_E44F17DBDE301A7101FCF5B872FCFA4A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventory, net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_E44F17DBDE301A7101FCF5B872FCFA4A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_E44F17DBDE301A7101FCF5B872FCFA4A" xlink:to="lab_us-gaap_InventoryNet_E44F17DBDE301A7101FCF5B872FCFA4A" xlink:type="arc"/>
<link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_72E2244939A5E71649AEF5B872FCEE01_terseLabel_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_72E2244939A5E71649AEF5B872FCEE01" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Prepaid expenses and other current assets </link:label>
<link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_72E2244939A5E71649AEF5B872FCEE01_label_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_72E2244939A5E71649AEF5B872FCEE01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Prepaid Expense and Other Assets, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_72E2244939A5E71649AEF5B872FCEE01" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_72E2244939A5E71649AEF5B872FCEE01" xlink:to="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_72E2244939A5E71649AEF5B872FCEE01" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsCurrent_41AC3823AFB6288BB4C7F5B872FD9557_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_41AC3823AFB6288BB4C7F5B872FD9557" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current assets </link:label>
<link:label id="lab_us-gaap_AssetsCurrent_41AC3823AFB6288BB4C7F5B872FD9557_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_41AC3823AFB6288BB4C7F5B872FD9557" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_41AC3823AFB6288BB4C7F5B872FD9557" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_41AC3823AFB6288BB4C7F5B872FD9557" xlink:to="lab_us-gaap_AssetsCurrent_41AC3823AFB6288BB4C7F5B872FD9557" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsNoncurrentAbstract_9C6682684C63E899451EF5B872FDA9B6_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsNoncurrentAbstract_9C6682684C63E899451EF5B872FDA9B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Non-current assets </link:label>
<link:label id="lab_us-gaap_AssetsNoncurrentAbstract_9C6682684C63E899451EF5B872FDA9B6_label_en-US" xlink:label="lab_us-gaap_AssetsNoncurrentAbstract_9C6682684C63E899451EF5B872FDA9B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Noncurrent [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsNoncurrentAbstract" xlink:label="loc_us-gaap_AssetsNoncurrentAbstract_9C6682684C63E899451EF5B872FDA9B6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_9C6682684C63E899451EF5B872FDA9B6" xlink:to="lab_us-gaap_AssetsNoncurrentAbstract_9C6682684C63E899451EF5B872FDA9B6" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_478DB0F26D9217FCC7E4F5B872FD0891_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_478DB0F26D9217FCC7E4F5B872FD0891" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and equipment, net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_478DB0F26D9217FCC7E4F5B872FD0891" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_478DB0F26D9217FCC7E4F5B872FD0891" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_478DB0F26D9217FCC7E4F5B872FD0891" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_CE53401E45FB052A276BF5B872FDCAD3_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_CE53401E45FB052A276BF5B872FDCAD3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intellectual property, net </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_CE53401E45FB052A276BF5B872FDCAD3_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_CE53401E45FB052A276BF5B872FDCAD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_CE53401E45FB052A276BF5B872FDCAD3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_CE53401E45FB052A276BF5B872FDCAD3" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_CE53401E45FB052A276BF5B872FDCAD3" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_E4BDDCBA8C435D9D0A05F5B872FDC82E_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_E4BDDCBA8C435D9D0A05F5B872FDC82E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_E4BDDCBA8C435D9D0A05F5B872FDC82E_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_E4BDDCBA8C435D9D0A05F5B872FDC82E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_E4BDDCBA8C435D9D0A05F5B872FDC82E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_E4BDDCBA8C435D9D0A05F5B872FDC82E" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_E4BDDCBA8C435D9D0A05F5B872FDC82E" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsNoncurrent_B73B72491F1E85FF594AF5B872FE5324_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsNoncurrent_B73B72491F1E85FF594AF5B872FE5324" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total non-current assets </link:label>
<link:label id="lab_us-gaap_AssetsNoncurrent_B73B72491F1E85FF594AF5B872FE5324_label_en-US" xlink:label="lab_us-gaap_AssetsNoncurrent_B73B72491F1E85FF594AF5B872FE5324" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="loc_us-gaap_AssetsNoncurrent_B73B72491F1E85FF594AF5B872FE5324" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsNoncurrent_B73B72491F1E85FF594AF5B872FE5324" xlink:to="lab_us-gaap_AssetsNoncurrent_B73B72491F1E85FF594AF5B872FE5324" xlink:type="arc"/>
<link:label id="lab_us-gaap_Assets_213C5E7692936035A3BFF5B872FE38CD_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_213C5E7692936035A3BFF5B872FE38CD" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total assets </link:label>
<link:label id="lab_us-gaap_Assets_213C5E7692936035A3BFF5B872FE38CD_label_en-US" xlink:label="lab_us-gaap_Assets_213C5E7692936035A3BFF5B872FE38CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_213C5E7692936035A3BFF5B872FE38CD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_213C5E7692936035A3BFF5B872FE38CD" xlink:to="lab_us-gaap_Assets_213C5E7692936035A3BFF5B872FE38CD" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_B68230D4E4CCA5DDA5AAF5B872FEDE0F_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_B68230D4E4CCA5DDA5AAF5B872FEDE0F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> LIABILITIES AND STOCKHOLDERS’ EQUITY </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_B68230D4E4CCA5DDA5AAF5B872FEDE0F_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_B68230D4E4CCA5DDA5AAF5B872FEDE0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_B68230D4E4CCA5DDA5AAF5B872FEDE0F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_B68230D4E4CCA5DDA5AAF5B872FEDE0F" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_B68230D4E4CCA5DDA5AAF5B872FEDE0F" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_249A3992B9D016C2DBE9F5B872FE572D_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_249A3992B9D016C2DBE9F5B872FE572D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_249A3992B9D016C2DBE9F5B872FE572D_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_249A3992B9D016C2DBE9F5B872FE572D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_249A3992B9D016C2DBE9F5B872FE572D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_249A3992B9D016C2DBE9F5B872FE572D" xlink:to="lab_us-gaap_LiabilitiesCurrentAbstract_249A3992B9D016C2DBE9F5B872FE572D" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountsPayableCurrent_5D0EA31F343D4EC3C207F5B872FEA45E_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_5D0EA31F343D4EC3C207F5B872FEA45E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounts payable </link:label>
<link:label id="lab_us-gaap_AccountsPayableCurrent_5D0EA31F343D4EC3C207F5B872FEA45E_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_5D0EA31F343D4EC3C207F5B872FEA45E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_5D0EA31F343D4EC3C207F5B872FEA45E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableCurrent_5D0EA31F343D4EC3C207F5B872FEA45E" xlink:to="lab_us-gaap_AccountsPayableCurrent_5D0EA31F343D4EC3C207F5B872FEA45E" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccruedLiabilitiesCurrent_ECB13C66A2EA813DD8BFF5B872FF9FC7_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrent_ECB13C66A2EA813DD8BFF5B872FF9FC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses </link:label>
<link:label id="lab_us-gaap_AccruedLiabilitiesCurrent_ECB13C66A2EA813DD8BFF5B872FF9FC7_label_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrent_ECB13C66A2EA813DD8BFF5B872FF9FC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_ECB13C66A2EA813DD8BFF5B872FF9FC7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_ECB13C66A2EA813DD8BFF5B872FF9FC7" xlink:to="lab_us-gaap_AccruedLiabilitiesCurrent_ECB13C66A2EA813DD8BFF5B872FF9FC7" xlink:type="arc"/>
<link:label id="lab_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1_terseLabel_en-US" xlink:label="lab_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lease liability, current portion </link:label>
<link:label id="lab_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1_label_en-US" xlink:label="lab_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating and Finance Liability, Current </link:label>
<link:label id="lab_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1_documentation_en-US" xlink:label="lab_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Operating and Finance Liability, Current </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OperatingandFinanceLiabilityCurrent" xlink:label="loc_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1" xlink:to="lab_aqms_OperatingandFinanceLiabilityCurrent_4E5C6F8E3DBD40DD79FBF5B872FFAED1" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredRentCreditCurrent_1186DBDABCEF9C76782FF5B872FFC76A_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredRentCreditCurrent_1186DBDABCEF9C76782FF5B872FFC76A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred rent, current portion </link:label>
<link:label id="lab_us-gaap_DeferredRentCreditCurrent_1186DBDABCEF9C76782FF5B872FFC76A_label_en-US" xlink:label="lab_us-gaap_DeferredRentCreditCurrent_1186DBDABCEF9C76782FF5B872FFC76A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Rent Credit, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredRentCreditCurrent" xlink:label="loc_us-gaap_DeferredRentCreditCurrent_1186DBDABCEF9C76782FF5B872FFC76A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredRentCreditCurrent_1186DBDABCEF9C76782FF5B872FFC76A" xlink:to="lab_us-gaap_DeferredRentCreditCurrent_1186DBDABCEF9C76782FF5B872FFC76A" xlink:type="arc"/>
<link:label id="lab_us-gaap_NotesPayableCurrent_1973D05ED37996B1DD54F5B872FF520D_terseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableCurrent_1973D05ED37996B1DD54F5B872FF520D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Notes payable, current portion </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableCurrent" xlink:label="loc_us-gaap_NotesPayableCurrent_1973D05ED37996B1DD54F5B872FF520D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesPayableCurrent_1973D05ED37996B1DD54F5B872FF520D" xlink:to="lab_us-gaap_NotesPayableCurrent_1973D05ED37996B1DD54F5B872FF520D" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConvertibleNotesPayableCurrent_2021B12887A39ED1C872F5B872FF7381_terseLabel_en-US" xlink:label="lab_us-gaap_ConvertibleNotesPayableCurrent_2021B12887A39ED1C872F5B872FF7381" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Convertible note payable, current portion </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConvertibleNotesPayableCurrent" xlink:label="loc_us-gaap_ConvertibleNotesPayableCurrent_2021B12887A39ED1C872F5B872FF7381" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConvertibleNotesPayableCurrent_2021B12887A39ED1C872F5B872FF7381" xlink:to="lab_us-gaap_ConvertibleNotesPayableCurrent_2021B12887A39ED1C872F5B872FF7381" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrent_0E1FF78A6A122F9F50D9F5B87300173E_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_0E1FF78A6A122F9F50D9F5B87300173E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrent_0E1FF78A6A122F9F50D9F5B87300173E_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_0E1FF78A6A122F9F50D9F5B87300173E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_0E1FF78A6A122F9F50D9F5B87300173E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_0E1FF78A6A122F9F50D9F5B87300173E" xlink:to="lab_us-gaap_LiabilitiesCurrent_0E1FF78A6A122F9F50D9F5B87300173E" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredRentCreditNoncurrent_7CB15B026BFB6B952792F5B87300D888_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredRentCreditNoncurrent_7CB15B026BFB6B952792F5B87300D888" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred rent, non-current portion </link:label>
<link:label id="lab_us-gaap_DeferredRentCreditNoncurrent_7CB15B026BFB6B952792F5B87300D888_label_en-US" xlink:label="lab_us-gaap_DeferredRentCreditNoncurrent_7CB15B026BFB6B952792F5B87300D888" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Rent Credit, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredRentCreditNoncurrent" xlink:label="loc_us-gaap_DeferredRentCreditNoncurrent_7CB15B026BFB6B952792F5B87300D888" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredRentCreditNoncurrent_7CB15B026BFB6B952792F5B87300D888" xlink:to="lab_us-gaap_DeferredRentCreditNoncurrent_7CB15B026BFB6B952792F5B87300D888" xlink:type="arc"/>
<link:label id="lab_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220_terseLabel_en-US" xlink:label="lab_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Lease liability, non-current portion </link:label>
<link:label id="lab_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220_label_en-US" xlink:label="lab_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating and Finance Liability, Noncurrent </link:label>
<link:label id="lab_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220_documentation_en-US" xlink:label="lab_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Operating and Finance Liability, Noncurrent </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OperatingandFinanceLiabilityNoncurrent" xlink:label="loc_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220" xlink:to="lab_aqms_OperatingandFinanceLiabilityNoncurrent_DE20F08367A2F28E14A7F5B873001220" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermNotesPayable_0062364238D6800914D8F5B873002727_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermNotesPayable_0062364238D6800914D8F5B873002727" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Notes payable, non-current portion </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermNotesPayable" xlink:label="loc_us-gaap_LongTermNotesPayable_0062364238D6800914D8F5B873002727" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermNotesPayable_0062364238D6800914D8F5B873002727" xlink:to="lab_us-gaap_LongTermNotesPayable_0062364238D6800914D8F5B873002727" xlink:type="arc"/>
<link:label id="lab_us-gaap_Liabilities_57CDC4006C98B8CD1B10F5B8730040F0_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_57CDC4006C98B8CD1B10F5B8730040F0" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities </link:label>
<link:label id="lab_us-gaap_Liabilities_57CDC4006C98B8CD1B10F5B8730040F0_label_en-US" xlink:label="lab_us-gaap_Liabilities_57CDC4006C98B8CD1B10F5B8730040F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_57CDC4006C98B8CD1B10F5B8730040F0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_57CDC4006C98B8CD1B10F5B8730040F0" xlink:to="lab_us-gaap_Liabilities_57CDC4006C98B8CD1B10F5B8730040F0" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommitmentsAndContingencies_0E48B165892D140BB940F5B87301BB45_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_0E48B165892D140BB940F5B87301BB45" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commitments and contingencies </link:label>
<link:label id="lab_us-gaap_CommitmentsAndContingencies_0E48B165892D140BB940F5B87301BB45_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_0E48B165892D140BB940F5B87301BB45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_0E48B165892D140BB940F5B87301BB45" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies_0E48B165892D140BB940F5B87301BB45" xlink:to="lab_us-gaap_CommitmentsAndContingencies_0E48B165892D140BB940F5B87301BB45" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquityAbstract_E6E06A0130E8C1FB2AF9F5B87301BDC8_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_E6E06A0130E8C1FB2AF9F5B87301BDC8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stockholders’ equity </link:label>
<link:label id="lab_us-gaap_StockholdersEquityAbstract_E6E06A0130E8C1FB2AF9F5B87301BDC8_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_E6E06A0130E8C1FB2AF9F5B87301BDC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Attributable to Parent [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_E6E06A0130E8C1FB2AF9F5B87301BDC8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityAbstract_E6E06A0130E8C1FB2AF9F5B87301BDC8" xlink:to="lab_us-gaap_StockholdersEquityAbstract_E6E06A0130E8C1FB2AF9F5B87301BDC8" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommonStockValue_E9B2E16FC4D40B0AF5EFF5B87301C94D_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_E9B2E16FC4D40B0AF5EFF5B87301C94D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock; $0.001 par value; 100,000,000 shares authorized; 57,292,874 and 38,932,437 shares issued and outstanding as of September 30, 2019 and December 31, 2018, respectively, </link:label>
<link:label id="lab_us-gaap_CommonStockValue_E9B2E16FC4D40B0AF5EFF5B87301C94D_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_E9B2E16FC4D40B0AF5EFF5B87301C94D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Value, Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_E9B2E16FC4D40B0AF5EFF5B87301C94D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue_E9B2E16FC4D40B0AF5EFF5B87301C94D" xlink:to="lab_us-gaap_CommonStockValue_E9B2E16FC4D40B0AF5EFF5B87301C94D" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8BB3C4E3808FB8540EF9F5B87301B46F_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8BB3C4E3808FB8540EF9F5B87301B46F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additional paid-in capital </link:label>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8BB3C4E3808FB8540EF9F5B87301B46F_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8BB3C4E3808FB8540EF9F5B87301B46F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Additional Paid in Capital, Common Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_8BB3C4E3808FB8540EF9F5B87301B46F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalCommonStock_8BB3C4E3808FB8540EF9F5B87301B46F" xlink:to="lab_us-gaap_AdditionalPaidInCapitalCommonStock_8BB3C4E3808FB8540EF9F5B87301B46F" xlink:type="arc"/>
<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_8C099E67E9FB7C71264FF5B87302BCCD_terseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_8C099E67E9FB7C71264FF5B87302BCCD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated deficit </link:label>
<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_8C099E67E9FB7C71264FF5B87302BCCD_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_8C099E67E9FB7C71264FF5B87302BCCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retained Earnings (Accumulated Deficit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_8C099E67E9FB7C71264FF5B87302BCCD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RetainedEarningsAccumulatedDeficit_8C099E67E9FB7C71264FF5B87302BCCD" xlink:to="lab_us-gaap_RetainedEarningsAccumulatedDeficit_8C099E67E9FB7C71264FF5B87302BCCD" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquity_D6162334BA89E99B21F4F5B8730212D5_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_D6162334BA89E99B21F4F5B8730212D5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total stockholders’ equity </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_D6162334BA89E99B21F4F5B8730212D5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_D6162334BA89E99B21F4F5B8730212D5" xlink:to="lab_us-gaap_StockholdersEquity_D6162334BA89E99B21F4F5B8730212D5" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_B12883081998343C90B0F5B87302F13E_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_B12883081998343C90B0F5B87302F13E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities and stockholders’ equity </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_B12883081998343C90B0F5B87302F13E_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_B12883081998343C90B0F5B87302F13E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_B12883081998343C90B0F5B87302F13E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_B12883081998343C90B0F5B87302F13E" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_B12883081998343C90B0F5B87302F13E" xlink:type="arc"/>
<link:label id="lab_us-gaap_Depreciation_7BB26288ECA264A0AB5D117BDAF3F106_verboseLabel_en-US" xlink:label="lab_us-gaap_Depreciation_9565D1AB11FD5F878507F9C5D1CBA220" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation expense </link:label>
<link:label id="lab_us-gaap_Depreciation_7BB26288ECA264A0AB5D117BDAF3F106_label_en-US" xlink:label="lab_us-gaap_Depreciation_9565D1AB11FD5F878507F9C5D1CBA220" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_us-gaap_Depreciation_9565D1AB11FD5F878507F9C5D1CBA220" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Depreciation_9565D1AB11FD5F878507F9C5D1CBA220" xlink:to="lab_us-gaap_Depreciation_9565D1AB11FD5F878507F9C5D1CBA220" xlink:type="arc"/>
<link:label id="lab_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F_terseLabel_en-US" xlink:label="lab_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Prior Company Executives </link:label>
<link:label id="lab_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F_label_en-US" xlink:label="lab_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Former Executives [Member] </link:label>
<link:label id="lab_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F_documentation_en-US" xlink:label="lab_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Former Executives [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_FormerExecutivesMember" xlink:label="loc_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F" xlink:to="lab_aqms_FormerExecutivesMember_2E3FB3238B4F95CD44DD17913D37C20F" xlink:type="arc"/>
<link:label id="lab_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6_terseLabel_en-US" xlink:label="lab_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Board Members </link:label>
<link:label id="lab_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6_label_en-US" xlink:label="lab_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Board Members [Member] </link:label>
<link:label id="lab_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6_documentation_en-US" xlink:label="lab_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Board Members [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_BoardMembersMember" xlink:label="loc_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6" xlink:to="lab_aqms_BoardMembersMember_6B6BF12FC1C89032083017913D387DF6" xlink:type="arc"/>
<link:label id="lab_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB_terseLabel_en-US" xlink:label="lab_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Veolia North America Regeneration Services, LLC </link:label>
<link:label id="lab_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB_label_en-US" xlink:label="lab_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Veolia North America Regeneration Services, LLC [Member] </link:label>
<link:label id="lab_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB_documentation_en-US" xlink:label="lab_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Veolia North America Regeneration Services, LLC [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_VeoliaNorthAmericaRegenerationServicesLLCMember" xlink:label="loc_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB" xlink:to="lab_aqms_VeoliaNorthAmericaRegenerationServicesLLCMember_4AB753516DD7FEB6E4EE17913D385EAB" xlink:type="arc"/>
<link:label id="lab_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85_terseLabel_en-US" xlink:label="lab_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Prior Company Executives </link:label>
<link:label id="lab_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85_label_en-US" xlink:label="lab_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Prior Company Executives [Member] </link:label>
<link:label id="lab_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85_documentation_en-US" xlink:label="lab_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Prior Company Executives [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_PriorCompanyExecutivesMember" xlink:label="loc_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85" xlink:to="lab_aqms_PriorCompanyExecutivesMember_CEEE86914FCBF3DB53EA17913D384D85" xlink:type="arc"/>
<link:label id="lab_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF_terseLabel_en-US" xlink:label="lab_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Clarios </link:label>
<link:label id="lab_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF_label_en-US" xlink:label="lab_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Clarios [Member] </link:label>
<link:label id="lab_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF_documentation_en-US" xlink:label="lab_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Clarios [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_ClariosMember" xlink:label="loc_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF" xlink:to="lab_aqms_ClariosMember_1847A8EBE120D6C0B2B117913D38C7CF" xlink:type="arc"/>
<link:label id="lab_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0_terseLabel_en-US" xlink:label="lab_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stephen Cotton </link:label>
<link:label id="lab_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0_label_en-US" xlink:label="lab_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stephen Cotton [Member] </link:label>
<link:label id="lab_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0_documentation_en-US" xlink:label="lab_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Stephen Cotton [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_StephenCottonMember" xlink:label="loc_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0" xlink:to="lab_aqms_StephenCottonMember_9B1FA42D86F3D927A35817913D38D0F0" xlink:type="arc"/>
<link:label id="lab_us-gaap_WarrantMember_48ED68EF4ABB305C455017913D3A96F4_terseLabel_en-US" xlink:label="lab_us-gaap_WarrantMember_48ED68EF4ABB305C455017913D3A96F4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warrant </link:label>
<link:label id="lab_us-gaap_WarrantMember_48ED68EF4ABB305C455017913D3A96F4_label_en-US" xlink:label="lab_us-gaap_WarrantMember_48ED68EF4ABB305C455017913D3A96F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Warrant [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WarrantMember" xlink:label="loc_us-gaap_WarrantMember_48ED68EF4ABB305C455017913D3A96F4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WarrantMember_48ED68EF4ABB305C455017913D3A96F4" xlink:to="lab_us-gaap_WarrantMember_48ED68EF4ABB305C455017913D3A96F4" xlink:type="arc"/>
<link:label id="lab_srt_AffiliatedEntityMember_F6D61168ACD2E3EE91F817913D3A2D96_terseLabel_en-US" xlink:label="lab_srt_AffiliatedEntityMember_F6D61168ACD2E3EE91F817913D3A2D96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Affiliated Entity </link:label>
<link:label id="lab_srt_AffiliatedEntityMember_F6D61168ACD2E3EE91F817913D3A2D96_label_en-US" xlink:label="lab_srt_AffiliatedEntityMember_F6D61168ACD2E3EE91F817913D3A2D96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Affiliated Entity [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_AffiliatedEntityMember" xlink:label="loc_srt_AffiliatedEntityMember_F6D61168ACD2E3EE91F817913D3A2D96" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_AffiliatedEntityMember_F6D61168ACD2E3EE91F817913D3A2D96" xlink:to="lab_srt_AffiliatedEntityMember_F6D61168ACD2E3EE91F817913D3A2D96" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionAxis_A0B99ABC7955E9AC3A9517913D3B22B6_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAxis_A0B99ABC7955E9AC3A9517913D3B22B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Axis] </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionAxis_A0B99ABC7955E9AC3A9517913D3B22B6_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAxis_A0B99ABC7955E9AC3A9517913D3B22B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_A0B99ABC7955E9AC3A9517913D3B22B6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_A0B99ABC7955E9AC3A9517913D3B22B6" xlink:to="lab_us-gaap_RelatedPartyTransactionAxis_A0B99ABC7955E9AC3A9517913D3B22B6" xlink:type="arc"/>
<link:label id="lab_us-gaap_RelatedPartyTransactionDomain_28318DB844043809978117913D3B5A2F_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain_28318DB844043809978117913D3B5A2F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Domain] </link:label>
<link:label id="lab_us-gaap_RelatedPartyTransactionDomain_28318DB844043809978117913D3B5A2F_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain_28318DB844043809978117913D3B5A2F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Related Party Transaction [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionDomain" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_28318DB844043809978117913D3B5A2F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_28318DB844043809978117913D3B5A2F" xlink:to="lab_us-gaap_RelatedPartyTransactionDomain_28318DB844043809978117913D3B5A2F" xlink:type="arc"/>
<link:label id="lab_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976_terseLabel_en-US" xlink:label="lab_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operations, Management and Maintenance Contract Year One </link:label>
<link:label id="lab_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976_label_en-US" xlink:label="lab_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operations, Management and Maintenance Contract Year One [Member] </link:label>
<link:label id="lab_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976_documentation_en-US" xlink:label="lab_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Operations, Management and Maintenance Contract Year One [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OperationsManagementandMaintenanceContractYearOneMember" xlink:label="loc_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976" xlink:to="lab_aqms_OperationsManagementandMaintenanceContractYearOneMember_6E98AD118809F8060D4117913D3B0976" xlink:type="arc"/>
<link:label id="lab_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598_terseLabel_en-US" xlink:label="lab_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operations, Management and Maintenance Contract Year Two </link:label>
<link:label id="lab_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598_label_en-US" xlink:label="lab_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operations, Management and Maintenance Contract Year Two [Member] </link:label>
<link:label id="lab_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598_documentation_en-US" xlink:label="lab_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Operations, Management and Maintenance Contract Year Two [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OperationsManagementandMaintenanceContractYearTwoMember" xlink:label="loc_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598" xlink:to="lab_aqms_OperationsManagementandMaintenanceContractYearTwoMember_E4F6E74BF3025615D03D17913D3B2598" xlink:type="arc"/>
<link:label id="lab_us-gaap_VestingAxis_C73339AE73598D190A9C17913D3C7CF3_terseLabel_en-US" xlink:label="lab_us-gaap_VestingAxis_C73339AE73598D190A9C17913D3C7CF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Vesting [Axis] </link:label>
<link:label id="lab_us-gaap_VestingAxis_C73339AE73598D190A9C17913D3C7CF3_label_en-US" xlink:label="lab_us-gaap_VestingAxis_C73339AE73598D190A9C17913D3C7CF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Vesting [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VestingAxis" xlink:label="loc_us-gaap_VestingAxis_C73339AE73598D190A9C17913D3C7CF3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VestingAxis_C73339AE73598D190A9C17913D3C7CF3" xlink:to="lab_us-gaap_VestingAxis_C73339AE73598D190A9C17913D3C7CF3" xlink:type="arc"/>
<link:label id="lab_us-gaap_VestingDomain_824DAADF02DF6C1BA23317913D3CB17E_terseLabel_en-US" xlink:label="lab_us-gaap_VestingDomain_824DAADF02DF6C1BA23317913D3CB17E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Vesting [Domain] </link:label>
<link:label id="lab_us-gaap_VestingDomain_824DAADF02DF6C1BA23317913D3CB17E_label_en-US" xlink:label="lab_us-gaap_VestingDomain_824DAADF02DF6C1BA23317913D3CB17E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Vesting [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_824DAADF02DF6C1BA23317913D3CB17E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VestingDomain_824DAADF02DF6C1BA23317913D3CB17E" xlink:to="lab_us-gaap_VestingDomain_824DAADF02DF6C1BA23317913D3CB17E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationAwardTrancheOneMember_6A6D59F64AE3AD5EAFF017913D3C4502_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationAwardTrancheOneMember_6A6D59F64AE3AD5EAFF017913D3C4502" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche One </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationAwardTrancheOneMember_6A6D59F64AE3AD5EAFF017913D3C4502_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationAwardTrancheOneMember_6A6D59F64AE3AD5EAFF017913D3C4502" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche One [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_6A6D59F64AE3AD5EAFF017913D3C4502" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationAwardTrancheOneMember_6A6D59F64AE3AD5EAFF017913D3C4502" xlink:to="lab_us-gaap_ShareBasedCompensationAwardTrancheOneMember_6A6D59F64AE3AD5EAFF017913D3C4502" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_93A97794AE0151A6CB2C17913D3CFEA8_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_93A97794AE0151A6CB2C17913D3CFEA8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Two </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_93A97794AE0151A6CB2C17913D3CFEA8_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_93A97794AE0151A6CB2C17913D3CFEA8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Two [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_93A97794AE0151A6CB2C17913D3CFEA8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_93A97794AE0151A6CB2C17913D3CFEA8" xlink:to="lab_us-gaap_ShareBasedCompensationAwardTrancheTwoMember_93A97794AE0151A6CB2C17913D3CFEA8" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_9C8D9F0C8412448F827D17913D3D0725_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_9C8D9F0C8412448F827D17913D3D0725" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Three </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_9C8D9F0C8412448F827D17913D3D0725_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_9C8D9F0C8412448F827D17913D3D0725" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Three [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheThreeMember" xlink:label="loc_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_9C8D9F0C8412448F827D17913D3D0725" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_9C8D9F0C8412448F827D17913D3D0725" xlink:to="lab_us-gaap_ShareBasedCompensationAwardTrancheThreeMember_9C8D9F0C8412448F827D17913D3D0725" xlink:type="arc"/>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C_terseLabel_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Four </link:label>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C_label_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Four [Member] </link:label>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C_documentation_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Four [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_SharebasedCompensationAwardTrancheFourMember" xlink:label="loc_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C" xlink:to="lab_aqms_SharebasedCompensationAwardTrancheFourMember_24CF85FF2BE964B1EA7117913D3DA70C" xlink:type="arc"/>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20_terseLabel_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Five </link:label>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20_label_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Five [Member] </link:label>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20_documentation_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Five [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_SharebasedCompensationAwardTrancheFiveMember" xlink:label="loc_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20" xlink:to="lab_aqms_SharebasedCompensationAwardTrancheFiveMember_36476F3B69A81530FF4617913D3D0F20" xlink:type="arc"/>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190_terseLabel_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Six </link:label>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190_label_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Six [Member] </link:label>
<link:label id="lab_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190_documentation_en-US" xlink:label="lab_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Award, Tranche Six [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_SharebasedCompensationAwardTrancheSixMember" xlink:label="loc_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190" xlink:to="lab_aqms_SharebasedCompensationAwardTrancheSixMember_DE5CA168A8B3C8C5854917913D3DE190" xlink:type="arc"/>
<link:label id="lab_us-gaap_ChiefExecutiveOfficerMember_09904C64E2C92CCF8FFC179683608AD1_terseLabel_en-US" xlink:label="lab_us-gaap_ChiefExecutiveOfficerMember_09904C64E2C92CCF8FFC179683608AD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Chief Executive Officer </link:label>
<link:label id="lab_us-gaap_ChiefExecutiveOfficerMember_09904C64E2C92CCF8FFC179683608AD1_label_en-US" xlink:label="lab_us-gaap_ChiefExecutiveOfficerMember_09904C64E2C92CCF8FFC179683608AD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Chief Executive Officer [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChiefExecutiveOfficerMember" xlink:label="loc_us-gaap_ChiefExecutiveOfficerMember_09904C64E2C92CCF8FFC179683608AD1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ChiefExecutiveOfficerMember_09904C64E2C92CCF8FFC179683608AD1" xlink:to="lab_us-gaap_ChiefExecutiveOfficerMember_09904C64E2C92CCF8FFC179683608AD1" xlink:type="arc"/>
<link:label id="lab_us-gaap_ChiefFinancialOfficerMember_32616AA401DFBF21DB0F17913D3E3C1A_terseLabel_en-US" xlink:label="lab_us-gaap_ChiefFinancialOfficerMember_32616AA401DFBF21DB0F17913D3E3C1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Chief Financial Officer </link:label>
<link:label id="lab_us-gaap_ChiefFinancialOfficerMember_32616AA401DFBF21DB0F17913D3E3C1A_label_en-US" xlink:label="lab_us-gaap_ChiefFinancialOfficerMember_32616AA401DFBF21DB0F17913D3E3C1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Chief Financial Officer [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChiefFinancialOfficerMember" xlink:label="loc_us-gaap_ChiefFinancialOfficerMember_32616AA401DFBF21DB0F17913D3E3C1A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ChiefFinancialOfficerMember_32616AA401DFBF21DB0F17913D3E3C1A" xlink:to="lab_us-gaap_ChiefFinancialOfficerMember_32616AA401DFBF21DB0F17913D3E3C1A" xlink:type="arc"/>
<link:label id="lab_us-gaap_PlanNameAxis_BFDB38AE1A6A3A347EC017913D3EA179_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameAxis_BFDB38AE1A6A3A347EC017913D3EA179" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan Name [Axis] </link:label>
<link:label id="lab_us-gaap_PlanNameAxis_BFDB38AE1A6A3A347EC017913D3EA179_label_en-US" xlink:label="lab_us-gaap_PlanNameAxis_BFDB38AE1A6A3A347EC017913D3EA179" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Plan Name [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_BFDB38AE1A6A3A347EC017913D3EA179" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameAxis_BFDB38AE1A6A3A347EC017913D3EA179" xlink:to="lab_us-gaap_PlanNameAxis_BFDB38AE1A6A3A347EC017913D3EA179" xlink:type="arc"/>
<link:label id="lab_us-gaap_PlanNameDomain_92F1AC4ABA622D61ECA517913D3EE16A_terseLabel_en-US" xlink:label="lab_us-gaap_PlanNameDomain_92F1AC4ABA622D61ECA517913D3EE16A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan Name [Domain] </link:label>
<link:label id="lab_us-gaap_PlanNameDomain_92F1AC4ABA622D61ECA517913D3EE16A_label_en-US" xlink:label="lab_us-gaap_PlanNameDomain_92F1AC4ABA622D61ECA517913D3EE16A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Plan Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_92F1AC4ABA622D61ECA517913D3EE16A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanNameDomain_92F1AC4ABA622D61ECA517913D3EE16A" xlink:to="lab_us-gaap_PlanNameDomain_92F1AC4ABA622D61ECA517913D3EE16A" xlink:type="arc"/>
<link:label id="lab_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B_terseLabel_en-US" xlink:label="lab_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Option One </link:label>
<link:label id="lab_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B_label_en-US" xlink:label="lab_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Option One [Member] </link:label>
<link:label id="lab_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B_documentation_en-US" xlink:label="lab_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Option One [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OptionOneMember" xlink:label="loc_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B" xlink:to="lab_aqms_OptionOneMember_D9874381BB7AE7C6A38917913D3E464B" xlink:type="arc"/>
<link:label id="lab_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865_terseLabel_en-US" xlink:label="lab_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Option Two </link:label>
<link:label id="lab_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865_label_en-US" xlink:label="lab_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Option Two [Member] </link:label>
<link:label id="lab_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865_documentation_en-US" xlink:label="lab_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Option Two [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OptionTwoMember" xlink:label="loc_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865" xlink:to="lab_aqms_OptionTwoMember_3859F7ECBBE2409A4E8817913D3F6865" xlink:type="arc"/>
<link:label id="lab_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859_terseLabel_en-US" xlink:label="lab_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Option Three </link:label>
<link:label id="lab_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859_label_en-US" xlink:label="lab_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Option Three [Member] </link:label>
<link:label id="lab_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859_documentation_en-US" xlink:label="lab_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Option Three [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OptionThreeMember" xlink:label="loc_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859" xlink:to="lab_aqms_OptionThreeMember_AFD74ABFA4B111DD6D4017913D3FA859" xlink:type="arc"/>
<link:label id="lab_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7_terseLabel_en-US" xlink:label="lab_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2019 Plan </link:label>
<link:label id="lab_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7_label_en-US" xlink:label="lab_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 2019 Plan [Member] </link:label>
<link:label id="lab_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7_documentation_en-US" xlink:label="lab_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 2019 Plan [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_A2019PlanMember" xlink:label="loc_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7" xlink:to="lab_aqms_A2019PlanMember_AD8AD8BDD31A80D88DB317913D3FCEF7" xlink:type="arc"/>
<link:label id="lab_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482_terseLabel_en-US" xlink:label="lab_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2019 Plan, Option One </link:label>
<link:label id="lab_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482_label_en-US" xlink:label="lab_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 2019 Plan, Option One [Member] </link:label>
<link:label id="lab_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482_documentation_en-US" xlink:label="lab_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 2019 Plan, Option One [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_A2019PlanOptionOneMember" xlink:label="loc_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482" xlink:to="lab_aqms_A2019PlanOptionOneMember_DDE63299517CC305D8C8179E0494A482" xlink:type="arc"/>
<link:label id="lab_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA_terseLabel_en-US" xlink:label="lab_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2019 Plan, Option Two </link:label>
<link:label id="lab_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA_label_en-US" xlink:label="lab_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 2019 Plan, Option Two [Member] </link:label>
<link:label id="lab_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA_documentation_en-US" xlink:label="lab_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 2019 Plan, Option Two [Member] </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_A2019PlanOptionTwoMember" xlink:label="loc_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA" xlink:to="lab_aqms_A2019PlanOptionTwoMember_F2C458ABB8F48DCD405D179E846A28DA" xlink:type="arc"/>
<link:label id="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_4A2562BACA4EABEC13F017913D4134B4_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_4A2562BACA4EABEC13F017913D4134B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Public offering (in shares) </link:label>
<link:label id="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_4A2562BACA4EABEC13F017913D4134B4_label_en-US" xlink:label="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_4A2562BACA4EABEC13F017913D4134B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sale of Stock, Number of Shares Issued in Transaction </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_4A2562BACA4EABEC13F017913D4134B4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_4A2562BACA4EABEC13F017913D4134B4" xlink:to="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_4A2562BACA4EABEC13F017913D4134B4" xlink:type="arc"/>
<link:label id="lab_us-gaap_SaleOfStockPricePerShare_68E3E5C72FFE4AFA152C17913D411014_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockPricePerShare_68E3E5C72FFE4AFA152C17913D411014" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Public offering price (in dollars per share) </link:label>
<link:label id="lab_us-gaap_SaleOfStockPricePerShare_68E3E5C72FFE4AFA152C17913D411014_label_en-US" xlink:label="lab_us-gaap_SaleOfStockPricePerShare_68E3E5C72FFE4AFA152C17913D411014" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Sale of Stock, Price Per Share </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockPricePerShare" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_68E3E5C72FFE4AFA152C17913D411014" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockPricePerShare_68E3E5C72FFE4AFA152C17913D411014" xlink:to="lab_us-gaap_SaleOfStockPricePerShare_68E3E5C72FFE4AFA152C17913D411014" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromIssuanceInitialPublicOffering_91591FE06BE0D50D5FE317913D414B9B_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceInitialPublicOffering_91591FE06BE0D50D5FE317913D414B9B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gross proceeds from public offering </link:label>
<link:label id="lab_us-gaap_ProceedsFromIssuanceInitialPublicOffering_91591FE06BE0D50D5FE317913D414B9B_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceInitialPublicOffering_91591FE06BE0D50D5FE317913D414B9B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance Initial Public Offering </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceInitialPublicOffering" xlink:label="loc_us-gaap_ProceedsFromIssuanceInitialPublicOffering_91591FE06BE0D50D5FE317913D414B9B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceInitialPublicOffering_91591FE06BE0D50D5FE317913D414B9B" xlink:to="lab_us-gaap_ProceedsFromIssuanceInitialPublicOffering_91591FE06BE0D50D5FE317913D414B9B" xlink:type="arc"/>
<link:label id="lab_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A_terseLabel_en-US" xlink:label="lab_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net proceeds from public offering </link:label>
<link:label id="lab_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A_label_en-US" xlink:label="lab_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Proceeds From Public Offering </link:label>
<link:label id="lab_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A_documentation_en-US" xlink:label="lab_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Net Proceeds From Public Offering. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_NetProceedsFromPublicOffering" xlink:label="loc_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A" xlink:to="lab_aqms_NetProceedsFromPublicOffering_8EADA4C605CD08A64CED17913D41D65A" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_51FD4056DA5D71A9C83B17913D41127A_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_51FD4056DA5D71A9C83B17913D41127A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_51FD4056DA5D71A9C83B17913D41127A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_51FD4056DA5D71A9C83B17913D41127A" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueNewIssues_51FD4056DA5D71A9C83B17913D41127A" xlink:type="arc"/>
<link:label id="lab_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_A1D2A794C24B6D32468A17913D42C1E2_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_A1D2A794C24B6D32468A17913D42C1E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warrants issued (in shares) </link:label>
<link:label id="lab_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_A1D2A794C24B6D32468A17913D42C1E2_label_en-US" xlink:label="lab_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_A1D2A794C24B6D32468A17913D42C1E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Warrant or Right, Number of Securities Called by Warrants or Rights </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:label="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_A1D2A794C24B6D32468A17913D42C1E2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_A1D2A794C24B6D32468A17913D42C1E2" xlink:to="lab_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_A1D2A794C24B6D32468A17913D42C1E2" xlink:type="arc"/>
<link:label id="lab_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4_terseLabel_en-US" xlink:label="lab_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of warrants issued </link:label>
<link:label id="lab_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4_label_en-US" xlink:label="lab_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Percentage </link:label>
<link:label id="lab_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4_documentation_en-US" xlink:label="lab_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Percentage </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage" xlink:label="loc_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4" xlink:to="lab_aqms_ClassofWarrantorRightNumberofSecuritiesCalledbyWarrantsorRightsPercentage_474F49725A4FDF687AEE17913D42F4E4" xlink:type="arc"/>
<link:label id="lab_us-gaap_WarrantsAndRightsOutstanding_C62BBACB1979D40A646F17913D425E5C_terseLabel_en-US" xlink:label="lab_us-gaap_WarrantsAndRightsOutstanding_C62BBACB1979D40A646F17913D425E5C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total shares sold </link:label>
<link:label id="lab_us-gaap_WarrantsAndRightsOutstanding_C62BBACB1979D40A646F17913D425E5C_label_en-US" xlink:label="lab_us-gaap_WarrantsAndRightsOutstanding_C62BBACB1979D40A646F17913D425E5C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Warrants and Rights Outstanding </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WarrantsAndRightsOutstanding" xlink:label="loc_us-gaap_WarrantsAndRightsOutstanding_C62BBACB1979D40A646F17913D425E5C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WarrantsAndRightsOutstanding_C62BBACB1979D40A646F17913D425E5C" xlink:to="lab_us-gaap_WarrantsAndRightsOutstanding_C62BBACB1979D40A646F17913D425E5C" xlink:type="arc"/>
<link:label id="lab_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_A568FB9D23F14E55BFC817913D4263F0_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_A568FB9D23F14E55BFC817913D4263F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warrant exercise price (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_A568FB9D23F14E55BFC817913D4263F0_label_en-US" xlink:label="lab_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_A568FB9D23F14E55BFC817913D4263F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Warrant or Right, Exercise Price of Warrants or Rights </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_A568FB9D23F14E55BFC817913D4263F0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_A568FB9D23F14E55BFC817913D4263F0" xlink:to="lab_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_A568FB9D23F14E55BFC817913D4263F0" xlink:type="arc"/>
<link:label id="lab_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2_terseLabel_en-US" xlink:label="lab_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of warrant exercise price </link:label>
<link:label id="lab_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2_label_en-US" xlink:label="lab_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Warrant or Right, Exercise Price of Warrants or Rights, Percentage </link:label>
<link:label id="lab_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2_documentation_en-US" xlink:label="lab_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Class of Warrant or Right, Exercise Price of Warrants or Rights, Percentage </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage" xlink:label="loc_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2" xlink:to="lab_aqms_ClassofWarrantorRightExercisePriceofWarrantsorRightsPercentage_060DC079B7661144F5E717913D425BC2" xlink:type="arc"/>
<link:label id="lab_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE_terseLabel_en-US" xlink:label="lab_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Post-modification warrant expiration date </link:label>
<link:label id="lab_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE_label_en-US" xlink:label="lab_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Post-Modification Warrant Expiration Date </link:label>
<link:label id="lab_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE_documentation_en-US" xlink:label="lab_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Post-Modification Warrant Expiration Date. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_PostModificationWarrantExpirationDate" xlink:label="loc_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE" xlink:to="lab_aqms_PostModificationWarrantExpirationDate_E6F651368F9F3F02E5E117913D42A6BE" xlink:type="arc"/>
<link:label id="lab_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30_terseLabel_en-US" xlink:label="lab_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of shares issued at anniversary (in shares) </link:label>
<link:label id="lab_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30_label_en-US" xlink:label="lab_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Agreement, Number Of Warrants To Purchase Additional Shares At Anniversary </link:label>
<link:label id="lab_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30_documentation_en-US" xlink:label="lab_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Operating Agreement, Number Of Warrants To Purchase Additional Shares At Anniversary </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary" xlink:label="loc_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30" xlink:to="lab_aqms_OperatingAgreementNumberOfWarrantsToPurchaseAdditionalSharesAtAnniversary_6701A62D99949ED683BD17913D42FE30" xlink:type="arc"/>
<link:label id="lab_us-gaap_WarrantsAndRightsOutstandingTerm_E77F781E6CE50F947BE617913D435FBF_terseLabel_en-US" xlink:label="lab_us-gaap_WarrantsAndRightsOutstandingTerm_E77F781E6CE50F947BE617913D435FBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warrant terms </link:label>
<link:label id="lab_us-gaap_WarrantsAndRightsOutstandingTerm_E77F781E6CE50F947BE617913D435FBF_label_en-US" xlink:label="lab_us-gaap_WarrantsAndRightsOutstandingTerm_E77F781E6CE50F947BE617913D435FBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Warrants and Rights Outstanding, Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WarrantsAndRightsOutstandingTerm" xlink:label="loc_us-gaap_WarrantsAndRightsOutstandingTerm_E77F781E6CE50F947BE617913D435FBF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WarrantsAndRightsOutstandingTerm_E77F781E6CE50F947BE617913D435FBF" xlink:to="lab_us-gaap_WarrantsAndRightsOutstandingTerm_E77F781E6CE50F947BE617913D435FBF" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_C1824B00B651EB9B1F2017913D439E3F_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_C1824B00B651EB9B1F2017913D439E3F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Shares available from award (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_C1824B00B651EB9B1F2017913D439E3F_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_C1824B00B651EB9B1F2017913D439E3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Shares Purchased for Award </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_C1824B00B651EB9B1F2017913D439E3F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_C1824B00B651EB9B1F2017913D439E3F" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward_C1824B00B651EB9B1F2017913D439E3F" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_81D551B900C009E88C0217913D436BD1_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_81D551B900C009E88C0217913D436BD1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award exercise period </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_81D551B900C009E88C0217913D436BD1_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_81D551B900C009E88C0217913D436BD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_81D551B900C009E88C0217913D436BD1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_81D551B900C009E88C0217913D436BD1" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_81D551B900C009E88C0217913D436BD1" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_5057E1C0382DE40CEFC917913D43EF1C_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_5057E1C0382DE40CEFC917913D43EF1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award exercise price (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_5057E1C0382DE40CEFC917913D43EF1C_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_5057E1C0382DE40CEFC917913D43EF1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_5057E1C0382DE40CEFC917913D43EF1C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_5057E1C0382DE40CEFC917913D43EF1C" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice_5057E1C0382DE40CEFC917913D43EF1C" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_A0E4792F38CFB808B9F917913D4089CB_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_A0E4792F38CFB808B9F917913D4089CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award exercise percentage </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_A0E4792F38CFB808B9F917913D4089CB_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_A0E4792F38CFB808B9F917913D4089CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_A0E4792F38CFB808B9F917913D4089CB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_A0E4792F38CFB808B9F917913D4089CB" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_A0E4792F38CFB808B9F917913D4089CB" xlink:type="arc"/>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_A6E77BFAC15D460B257617913D43041B_terseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_A6E77BFAC15D460B257617913D43041B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Expected vesting period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_A6E77BFAC15D460B257617913D43041B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_A6E77BFAC15D460B257617913D43041B" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_A6E77BFAC15D460B257617913D43041B" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_B59D9524667EC8F15CF117913D437A25_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_B59D9524667EC8F15CF117913D437A25" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted stock units granted (in shares) </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_B59D9524667EC8F15CF117913D437A25_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_B59D9524667EC8F15CF117913D437A25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Shares, Restricted Stock Award, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_B59D9524667EC8F15CF117913D437A25" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_B59D9524667EC8F15CF117913D437A25" xlink:to="lab_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_B59D9524667EC8F15CF117913D437A25" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_076FD00E5DFF606034C417913D44F3E2_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_076FD00E5DFF606034C417913D44F3E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted stock units grant date fair value </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_076FD00E5DFF606034C417913D44F3E2_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_076FD00E5DFF606034C417913D44F3E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Issued During Period, Value, Restricted Stock Award, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_076FD00E5DFF606034C417913D44F3E2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_076FD00E5DFF606034C417913D44F3E2" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross_076FD00E5DFF606034C417913D44F3E2" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_AFF4E57BE980C29B9F4A117BDAB74532_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_CC677FC9D2195F6CB23D38376217D188" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Principle amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_CC677FC9D2195F6CB23D38376217D188" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_CC677FC9D2195F6CB23D38376217D188" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_CC677FC9D2195F6CB23D38376217D188" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentTerm_8AD5A7C8FB028250191A117BDAB71F66_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_77818D6DAB735581B596050947A02C94" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Term of the loan </link:label>
<link:label id="lab_us-gaap_DebtInstrumentTerm_8AD5A7C8FB028250191A117BDAB71F66_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_77818D6DAB735581B596050947A02C94" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_77818D6DAB735581B596050947A02C94" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTerm_77818D6DAB735581B596050947A02C94" xlink:to="lab_us-gaap_DebtInstrumentTerm_77818D6DAB735581B596050947A02C94" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_B34E1AE3F2BF8B1072F9117BDAB7AE7B_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_9C34F6FED20955B49F399D479DCE3A24" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Interest rate </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_9C34F6FED20955B49F399D479DCE3A24" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_9C34F6FED20955B49F399D479DCE3A24" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_9C34F6FED20955B49F399D479DCE3A24" xlink:type="arc"/>
<link:label id="lab_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_7DB341B7AD968319ED6E117BDAB7439D_terseLabel_en-US" xlink:label="lab_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_ADCFE5653BCA5D87A83949CDC3A24838" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt service coverage ratio </link:label>
<link:label id="lab_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_7DB341B7AD968319ED6E117BDAB7439D_label_en-US" xlink:label="lab_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_ADCFE5653BCA5D87A83949CDC3A24838" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument Covenant Service Coverage Ratio Maximum </link:label>
<link:label id="lab_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_7DB341B7AD968319ED6E117BDAB7439D_documentation_en-US" xlink:label="lab_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_ADCFE5653BCA5D87A83949CDC3A24838" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument Covenant Service Coverage Ratio Maximum </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum" xlink:label="loc_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_ADCFE5653BCA5D87A83949CDC3A24838" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_ADCFE5653BCA5D87A83949CDC3A24838" xlink:to="lab_aqms_DebtInstrumentCovenantServiceCoverageRatioMaximum_ADCFE5653BCA5D87A83949CDC3A24838" xlink:type="arc"/>
<link:label id="lab_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_08082FA08EC444548413117BDAB77D01_terseLabel_en-US" xlink:label="lab_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_771B16A581165305AC52D572C1A0EAF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net worth ratio </link:label>
<link:label id="lab_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_08082FA08EC444548413117BDAB77D01_label_en-US" xlink:label="lab_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_771B16A581165305AC52D572C1A0EAF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument Covenant Net Worth Ratio Maximum </link:label>
<link:label id="lab_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_08082FA08EC444548413117BDAB77D01_documentation_en-US" xlink:label="lab_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_771B16A581165305AC52D572C1A0EAF7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument Covenant Net Worth Ratio Maximum </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_DebtInstrumentCovenantNetWorthRatioMaximum" xlink:label="loc_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_771B16A581165305AC52D572C1A0EAF7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_771B16A581165305AC52D572C1A0EAF7" xlink:to="lab_aqms_DebtInstrumentCovenantNetWorthRatioMaximum_771B16A581165305AC52D572C1A0EAF7" xlink:type="arc"/>
<link:label id="lab_aqms_Minimumcurrentratio_FF88D90321C15CA0C51C117BDAB73C65_terseLabel_en-US" xlink:label="lab_aqms_Minimumcurrentratio_63608169C37658409A310E1BB25E834B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Minimum current ratio </link:label>
<link:label id="lab_aqms_Minimumcurrentratio_FF88D90321C15CA0C51C117BDAB73C65_label_en-US" xlink:label="lab_aqms_Minimumcurrentratio_63608169C37658409A310E1BB25E834B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Minimum current ratio </link:label>
<link:label id="lab_aqms_Minimumcurrentratio_FF88D90321C15CA0C51C117BDAB73C65_documentation_en-US" xlink:label="lab_aqms_Minimumcurrentratio_63608169C37658409A310E1BB25E834B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Minimum current ratio </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_Minimumcurrentratio" xlink:label="loc_aqms_Minimumcurrentratio_63608169C37658409A310E1BB25E834B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_Minimumcurrentratio_63608169C37658409A310E1BB25E834B" xlink:to="lab_aqms_Minimumcurrentratio_63608169C37658409A310E1BB25E834B" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentCollateralAmount_303226DE6892BD12D1DF117BDAB72DE5_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCollateralAmount_3A615ED1B5685558818F32DCD163494E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Collateral amount of loan </link:label>
<link:label id="lab_us-gaap_DebtInstrumentCollateralAmount_303226DE6892BD12D1DF117BDAB72DE5_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentCollateralAmount_3A615ED1B5685558818F32DCD163494E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Collateral Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentCollateralAmount" xlink:label="loc_us-gaap_DebtInstrumentCollateralAmount_3A615ED1B5685558818F32DCD163494E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentCollateralAmount_3A615ED1B5685558818F32DCD163494E" xlink:to="lab_us-gaap_DebtInstrumentCollateralAmount_3A615ED1B5685558818F32DCD163494E" xlink:type="arc"/>
<link:label id="lab_us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_D8F32B4990D07BA38FCC117BDAB76DA4_terseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_234CA18F0B715672B0A988C27D59765D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Loan guarantee </link:label>
<link:label id="lab_us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_D8F32B4990D07BA38FCC117BDAB76DA4_label_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_234CA18F0B715672B0A988C27D59765D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantor Obligations, Liquidation Proceeds, Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GuaranteeObligationsLiquidationProceedsPercentage" xlink:label="loc_us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_234CA18F0B715672B0A988C27D59765D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_234CA18F0B715672B0A988C27D59765D" xlink:to="lab_us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_234CA18F0B715672B0A988C27D59765D" xlink:type="arc"/>
<link:label id="lab_aqms_GuaranteeFee_688EAEECF1CE4AD4C83C117BDABBBA59_terseLabel_en-US" xlink:label="lab_aqms_GuaranteeFee_D501C8E64F3B582EAA1565D8F6ABCBD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Guarantee fee </link:label>
<link:label id="lab_aqms_GuaranteeFee_688EAEECF1CE4AD4C83C117BDABBBA59_label_en-US" xlink:label="lab_aqms_GuaranteeFee_D501C8E64F3B582EAA1565D8F6ABCBD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Guarantee fee, amount </link:label>
<link:label id="lab_aqms_GuaranteeFee_688EAEECF1CE4AD4C83C117BDABBBA59_documentation_en-US" xlink:label="lab_aqms_GuaranteeFee_D501C8E64F3B582EAA1565D8F6ABCBD4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Guarantee fee. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_GuaranteeFee" xlink:label="loc_aqms_GuaranteeFee_D501C8E64F3B582EAA1565D8F6ABCBD4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_GuaranteeFee_D501C8E64F3B582EAA1565D8F6ABCBD4" xlink:to="lab_aqms_GuaranteeFee_D501C8E64F3B582EAA1565D8F6ABCBD4" xlink:type="arc"/>
<link:label id="lab_aqms_AnnualFeePercentage_F34EB88674082E972BCE117BDABBCBDB_terseLabel_en-US" xlink:label="lab_aqms_AnnualFeePercentage_0186BA7C802A5CF3858488E04F22CCEE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Annual fee </link:label>
<link:label id="lab_aqms_AnnualFeePercentage_F34EB88674082E972BCE117BDABBCBDB_label_en-US" xlink:label="lab_aqms_AnnualFeePercentage_0186BA7C802A5CF3858488E04F22CCEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Annual fee, percentage </link:label>
<link:label id="lab_aqms_AnnualFeePercentage_F34EB88674082E972BCE117BDABBCBDB_documentation_en-US" xlink:label="lab_aqms_AnnualFeePercentage_0186BA7C802A5CF3858488E04F22CCEE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Annual fee, percentage. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_AnnualFeePercentage" xlink:label="loc_aqms_AnnualFeePercentage_0186BA7C802A5CF3858488E04F22CCEE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_AnnualFeePercentage_0186BA7C802A5CF3858488E04F22CCEE" xlink:to="lab_aqms_AnnualFeePercentage_0186BA7C802A5CF3858488E04F22CCEE" xlink:type="arc"/>
<link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_4E2C2B91BBD0D79B076A8117450C499C_terseLabel_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_E7661AE11EF5507C88BCE70DEC7B8A32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Summary of Significant Accounting Policies </link:label>
<link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_4E2C2B91BBD0D79B076A8117450C499C_label_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_E7661AE11EF5507C88BCE70DEC7B8A32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Significant Accounting Policies [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_SignificantAccountingPoliciesTextBlock_E7661AE11EF5507C88BCE70DEC7B8A32" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SignificantAccountingPoliciesTextBlock_E7661AE11EF5507C88BCE70DEC7B8A32" xlink:to="lab_us-gaap_SignificantAccountingPoliciesTextBlock_E7661AE11EF5507C88BCE70DEC7B8A32" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsequentEventsAbstract_6B00F31191ADA44A99DD811744531C07_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsAbstract_14DC13E4A2AE5E378FC32B83D79BC978" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Events [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="loc_us-gaap_SubsequentEventsAbstract_14DC13E4A2AE5E378FC32B83D79BC978" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsAbstract_14DC13E4A2AE5E378FC32B83D79BC978" xlink:to="lab_us-gaap_SubsequentEventsAbstract_14DC13E4A2AE5E378FC32B83D79BC978" xlink:type="arc"/>
<link:label id="lab_us-gaap_SubsequentEventsTextBlock_E2E97BD1A98E737FF9AE8117445341BA_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventsTextBlock_F9D29A2ED92C5A32AA138D71D7C1C2E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Subsequent Events </link:label>
<link:label id="lab_us-gaap_SubsequentEventsTextBlock_E2E97BD1A98E737FF9AE8117445341BA_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsTextBlock_F9D29A2ED92C5A32AA138D71D7C1C2E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Subsequent Events [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="loc_us-gaap_SubsequentEventsTextBlock_F9D29A2ED92C5A32AA138D71D7C1C2E7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsTextBlock_F9D29A2ED92C5A32AA138D71D7C1C2E7" xlink:to="lab_us-gaap_SubsequentEventsTextBlock_F9D29A2ED92C5A32AA138D71D7C1C2E7" xlink:type="arc"/>
<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A31FC3E92167DAB535C4D096DCB57D69_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A31FC3E92167DAB535C4D096DCB57D69" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements or Change in Accounting Principle [Table] </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A31FC3E92167DAB535C4D096DCB57D69_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A31FC3E92167DAB535C4D096DCB57D69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements or Change in Accounting Principle [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A31FC3E92167DAB535C4D096DCB57D69" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A31FC3E92167DAB535C4D096DCB57D69" xlink:to="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_A31FC3E92167DAB535C4D096DCB57D69" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0D3A632ABFC553B6772DD096DCB5CC1A_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0D3A632ABFC553B6772DD096DCB5CC1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments for New Accounting Pronouncements [Axis] </link:label>
<link:label id="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0D3A632ABFC553B6772DD096DCB5CC1A_label_en-US" xlink:label="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0D3A632ABFC553B6772DD096DCB5CC1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments for New Accounting Pronouncements [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0D3A632ABFC553B6772DD096DCB5CC1A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0D3A632ABFC553B6772DD096DCB5CC1A" xlink:to="lab_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_0D3A632ABFC553B6772DD096DCB5CC1A" xlink:type="arc"/>
<link:label id="lab_us-gaap_TypeOfAdoptionMember_6EC7797F5F7CA615BB63D096DCB56A1A_terseLabel_en-US" xlink:label="lab_us-gaap_TypeOfAdoptionMember_6EC7797F5F7CA615BB63D096DCB56A1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Type of Adoption [Domain] </link:label>
<link:label id="lab_us-gaap_TypeOfAdoptionMember_6EC7797F5F7CA615BB63D096DCB56A1A_label_en-US" xlink:label="lab_us-gaap_TypeOfAdoptionMember_6EC7797F5F7CA615BB63D096DCB56A1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Type of Adoption [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_6EC7797F5F7CA615BB63D096DCB56A1A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TypeOfAdoptionMember_6EC7797F5F7CA615BB63D096DCB56A1A" xlink:to="lab_us-gaap_TypeOfAdoptionMember_6EC7797F5F7CA615BB63D096DCB56A1A" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccountingStandardsUpdate201602Member_82E78EE1F5C0839D9D01D096DCB5B895_terseLabel_en-US" xlink:label="lab_us-gaap_AccountingStandardsUpdate201602Member_82E78EE1F5C0839D9D01D096DCB5B895" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounting Standards Update 2016-02 </link:label>
<link:label id="lab_us-gaap_AccountingStandardsUpdate201602Member_82E78EE1F5C0839D9D01D096DCB5B895_label_en-US" xlink:label="lab_us-gaap_AccountingStandardsUpdate201602Member_82E78EE1F5C0839D9D01D096DCB5B895" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Standards Update 2016-02 [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201602Member_82E78EE1F5C0839D9D01D096DCB5B895" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingStandardsUpdate201602Member_82E78EE1F5C0839D9D01D096DCB5B895" xlink:to="lab_us-gaap_AccountingStandardsUpdate201602Member_82E78EE1F5C0839D9D01D096DCB5B895" xlink:type="arc"/>
<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_54C891745C207779770ED096DCB540F1_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_54C891745C207779770ED096DCB540F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements or Change in Accounting Principle [Line Items] </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_54C891745C207779770ED096DCB540F1_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_54C891745C207779770ED096DCB540F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements or Change in Accounting Principle [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_54C891745C207779770ED096DCB540F1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_54C891745C207779770ED096DCB540F1" xlink:to="lab_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_54C891745C207779770ED096DCB540F1" xlink:type="arc"/>
<link:label id="lab_us-gaap_NumberOfOperatingSegments_CD3B9CD92D779324D8ACD096DCB55D05_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfOperatingSegments_CD3B9CD92D779324D8ACD096DCB55D05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of operating segments </link:label>
<link:label id="lab_us-gaap_NumberOfOperatingSegments_CD3B9CD92D779324D8ACD096DCB55D05_label_en-US" xlink:label="lab_us-gaap_NumberOfOperatingSegments_CD3B9CD92D779324D8ACD096DCB55D05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Number of Operating Segments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfOperatingSegments" xlink:label="loc_us-gaap_NumberOfOperatingSegments_CD3B9CD92D779324D8ACD096DCB55D05" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfOperatingSegments_CD3B9CD92D779324D8ACD096DCB55D05" xlink:to="lab_us-gaap_NumberOfOperatingSegments_CD3B9CD92D779324D8ACD096DCB55D05" xlink:type="arc"/>
<link:label id="lab_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D_terseLabel_en-US" xlink:label="lab_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of geographic segments </link:label>
<link:label id="lab_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D_label_en-US" xlink:label="lab_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Geographic Segment </link:label>
<link:label id="lab_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D_documentation_en-US" xlink:label="lab_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Geographic Segment </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_GeographicSegment" xlink:label="loc_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D" xlink:to="lab_aqms_GeographicSegment_4E135173D3E315C4765AD096DCB5552D" xlink:type="arc"/>
<link:label id="lab_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D_terseLabel_en-US" xlink:label="lab_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of long-term office leases </link:label>
<link:label id="lab_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D_label_en-US" xlink:label="lab_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-Term Office Lease </link:label>
<link:label id="lab_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D_documentation_en-US" xlink:label="lab_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Long-Term Office Lease </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_LongTermOfficeLease" xlink:label="loc_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D" xlink:to="lab_aqms_LongTermOfficeLease_4E08E52C5E2B65F23512D096DCB53D5D" xlink:type="arc"/>
<link:label id="lab_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A_terseLabel_en-US" xlink:label="lab_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of equipment finance leases </link:label>
<link:label id="lab_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A_label_en-US" xlink:label="lab_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equipment Finance Lease </link:label>
<link:label id="lab_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A_documentation_en-US" xlink:label="lab_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Equipment Finance Lease </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_EquipmentFinanceLease" xlink:label="loc_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A" xlink:to="lab_aqms_EquipmentFinanceLease_FA6A8725AD9308972E1FD096DCB5F60A" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeStatementAbstract_E87D52E37BB161C68CA4C13912DB0669_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_E87D52E37BB161C68CA4C13912DB0669" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_E87D52E37BB161C68CA4C13912DB0669" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementAbstract_E87D52E37BB161C68CA4C13912DB0669" xlink:to="lab_us-gaap_IncomeStatementAbstract_E87D52E37BB161C68CA4C13912DB0669" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_664B49B2B9022698CB50C13912DBE2FF_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_664B49B2B9022698CB50C13912DBE2FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Product sales </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_664B49B2B9022698CB50C13912DBE2FF_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_664B49B2B9022698CB50C13912DBE2FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer, Excluding Assessed Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_664B49B2B9022698CB50C13912DBE2FF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_664B49B2B9022698CB50C13912DBE2FF" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_664B49B2B9022698CB50C13912DBE2FF" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingExpensesAbstract_7A7696C56FB9A3A38026C13912DB23C6_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_7A7696C56FB9A3A38026C13912DB23C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating cost and expense </link:label>
<link:label id="lab_us-gaap_OperatingExpensesAbstract_7A7696C56FB9A3A38026C13912DB23C6_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_7A7696C56FB9A3A38026C13912DB23C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Expenses [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_7A7696C56FB9A3A38026C13912DB23C6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7A7696C56FB9A3A38026C13912DB23C6" xlink:to="lab_us-gaap_OperatingExpensesAbstract_7A7696C56FB9A3A38026C13912DB23C6" xlink:type="arc"/>
<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_A0624EDF19AE047493C5C13912DB8B0A_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_A0624EDF19AE047493C5C13912DB8B0A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cost of product sales </link:label>
<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_A0624EDF19AE047493C5C13912DB8B0A_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_A0624EDF19AE047493C5C13912DB8B0A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost of Goods and Services Sold </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_A0624EDF19AE047493C5C13912DB8B0A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSold_A0624EDF19AE047493C5C13912DB8B0A" xlink:to="lab_us-gaap_CostOfGoodsAndServicesSold_A0624EDF19AE047493C5C13912DB8B0A" xlink:type="arc"/>
<link:label id="lab_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_5462F08D76ADA25E4AE9C13912EBB79D_terseLabel_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_5462F08D76ADA25E4AE9C13912EBB79D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Research and development cost </link:label>
<link:label id="lab_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_5462F08D76ADA25E4AE9C13912EBB79D_label_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_5462F08D76ADA25E4AE9C13912EBB79D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Research and Development Expense (Excluding Acquired in Process Cost) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_5462F08D76ADA25E4AE9C13912EBB79D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_5462F08D76ADA25E4AE9C13912EBB79D" xlink:to="lab_us-gaap_ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost_5462F08D76ADA25E4AE9C13912EBB79D" xlink:type="arc"/>
<link:label id="lab_us-gaap_GeneralAndAdministrativeExpense_097334A71DB50545EFCBC13912EB2E95_terseLabel_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpense_097334A71DB50545EFCBC13912EB2E95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> General and administrative expense </link:label>
<link:label id="lab_us-gaap_GeneralAndAdministrativeExpense_097334A71DB50545EFCBC13912EB2E95_label_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpense_097334A71DB50545EFCBC13912EB2E95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> General and Administrative Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_097334A71DB50545EFCBC13912EB2E95" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeneralAndAdministrativeExpense_097334A71DB50545EFCBC13912EB2E95" xlink:to="lab_us-gaap_GeneralAndAdministrativeExpense_097334A71DB50545EFCBC13912EB2E95" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingExpenses_E1FD02603F7341B5ADCAC13912EBF7D2_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingExpenses_E1FD02603F7341B5ADCAC13912EBF7D2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total operating expense </link:label>
<link:label id="lab_us-gaap_OperatingExpenses_E1FD02603F7341B5ADCAC13912EBF7D2_label_en-US" xlink:label="lab_us-gaap_OperatingExpenses_E1FD02603F7341B5ADCAC13912EBF7D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Expenses </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_E1FD02603F7341B5ADCAC13912EBF7D2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpenses_E1FD02603F7341B5ADCAC13912EBF7D2" xlink:to="lab_us-gaap_OperatingExpenses_E1FD02603F7341B5ADCAC13912EBF7D2" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingIncomeLoss_A619BEC2353C38277ECDC13912EBF96C_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_A619BEC2353C38277ECDC13912EBF96C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Loss from operations </link:label>
<link:label id="lab_us-gaap_OperatingIncomeLoss_A619BEC2353C38277ECDC13912EBF96C_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_A619BEC2353C38277ECDC13912EBF96C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Income (Loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_A619BEC2353C38277ECDC13912EBF96C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_A619BEC2353C38277ECDC13912EBF96C" xlink:to="lab_us-gaap_OperatingIncomeLoss_A619BEC2353C38277ECDC13912EBF96C" xlink:type="arc"/>
<link:label id="lab_us-gaap_NonoperatingIncomeExpenseAbstract_1120FD6EE4D5EE399863C13912EB1CE9_terseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpenseAbstract_1120FD6EE4D5EE399863C13912EB1CE9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other income and (expense) </link:label>
<link:label id="lab_us-gaap_NonoperatingIncomeExpenseAbstract_1120FD6EE4D5EE399863C13912EB1CE9_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpenseAbstract_1120FD6EE4D5EE399863C13912EB1CE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Nonoperating Income (Expense) [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_1120FD6EE4D5EE399863C13912EB1CE9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_1120FD6EE4D5EE399863C13912EB1CE9" xlink:to="lab_us-gaap_NonoperatingIncomeExpenseAbstract_1120FD6EE4D5EE399863C13912EB1CE9" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestExpense_71FE2C25995A9D72579DC13912EBA093_negatedLabel_en-US" xlink:label="lab_us-gaap_InterestExpense_71FE2C25995A9D72579DC13912EBA093" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Interest expense </link:label>
<link:label id="lab_us-gaap_InterestExpense_71FE2C25995A9D72579DC13912EBA093_label_en-US" xlink:label="lab_us-gaap_InterestExpense_71FE2C25995A9D72579DC13912EBA093" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_71FE2C25995A9D72579DC13912EBA093" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpense_71FE2C25995A9D72579DC13912EBA093" xlink:to="lab_us-gaap_InterestExpense_71FE2C25995A9D72579DC13912EBA093" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestAndOtherIncome_DAC17ECCE3C14B8CE1F9C13912EB0AEE_terseLabel_en-US" xlink:label="lab_us-gaap_InterestAndOtherIncome_DAC17ECCE3C14B8CE1F9C13912EB0AEE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest and other income </link:label>
<link:label id="lab_us-gaap_InterestAndOtherIncome_DAC17ECCE3C14B8CE1F9C13912EB0AEE_label_en-US" xlink:label="lab_us-gaap_InterestAndOtherIncome_DAC17ECCE3C14B8CE1F9C13912EB0AEE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest and Other Income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestAndOtherIncome" xlink:label="loc_us-gaap_InterestAndOtherIncome_DAC17ECCE3C14B8CE1F9C13912EB0AEE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestAndOtherIncome_DAC17ECCE3C14B8CE1F9C13912EB0AEE" xlink:to="lab_us-gaap_InterestAndOtherIncome_DAC17ECCE3C14B8CE1F9C13912EB0AEE" xlink:type="arc"/>
<link:label id="lab_us-gaap_NonoperatingIncomeExpense_CC626F9AF3354BA9F553C13912ECCBFB_totalLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_CC626F9AF3354BA9F553C13912ECCBFB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total other expense, net </link:label>
<link:label id="lab_us-gaap_NonoperatingIncomeExpense_CC626F9AF3354BA9F553C13912ECCBFB_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_CC626F9AF3354BA9F553C13912ECCBFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Nonoperating Income (Expense) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_CC626F9AF3354BA9F553C13912ECCBFB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_CC626F9AF3354BA9F553C13912ECCBFB" xlink:to="lab_us-gaap_NonoperatingIncomeExpense_CC626F9AF3354BA9F553C13912ECCBFB" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_E3AAC0B671820CA54965C13912EC2FE8_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_E3AAC0B671820CA54965C13912EC2FE8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Loss before income tax expense </link:label>
<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_E3AAC0B671820CA54965C13912EC2FE8_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_E3AAC0B671820CA54965C13912EC2FE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_E3AAC0B671820CA54965C13912EC2FE8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_E3AAC0B671820CA54965C13912EC2FE8" xlink:to="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_E3AAC0B671820CA54965C13912EC2FE8" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_16AEEAC66A348D1E2778C13912EC0F53_negatedLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_16AEEAC66A348D1E2778C13912EC0F53" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Income tax expense </link:label>
<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_16AEEAC66A348D1E2778C13912EC0F53_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_16AEEAC66A348D1E2778C13912EC0F53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Expense (Benefit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_16AEEAC66A348D1E2778C13912EC0F53" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_16AEEAC66A348D1E2778C13912EC0F53" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_16AEEAC66A348D1E2778C13912EC0F53" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetIncomeLoss_09CC70898536B5627B05C13912ECA83B_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_09CC70898536B5627B05C13912ECA83B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net loss </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_09CC70898536B5627B05C13912ECA83B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_09CC70898536B5627B05C13912ECA83B" xlink:to="lab_us-gaap_NetIncomeLoss_09CC70898536B5627B05C13912ECA83B" xlink:type="arc"/>
<link:label id="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_AFD64F29036591EEFF7AC13912EC2AE9_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_AFD64F29036591EEFF7AC13912EC2AE9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted average shares outstanding, basic and diluted (in shares) </link:label>
<link:label id="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_AFD64F29036591EEFF7AC13912EC2AE9_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_AFD64F29036591EEFF7AC13912EC2AE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Weighted Average Number of Shares Outstanding, Basic and Diluted </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:label="loc_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_AFD64F29036591EEFF7AC13912EC2AE9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_AFD64F29036591EEFF7AC13912EC2AE9" xlink:to="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_AFD64F29036591EEFF7AC13912EC2AE9" xlink:type="arc"/>
<link:label id="lab_us-gaap_EarningsPerShareBasicAndDiluted_04E2D2FF992F4CA943FDC13912ECB0BF_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDiluted_04E2D2FF992F4CA943FDC13912ECB0BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Basic and diluted net loss per share (in dollars per share) </link:label>
<link:label id="lab_us-gaap_EarningsPerShareBasicAndDiluted_04E2D2FF992F4CA943FDC13912ECB0BF_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDiluted_04E2D2FF992F4CA943FDC13912ECB0BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Earnings Per Share, Basic and Diluted </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDiluted_04E2D2FF992F4CA943FDC13912ECB0BF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDiluted_04E2D2FF992F4CA943FDC13912ECB0BF" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDiluted_04E2D2FF992F4CA943FDC13912ECB0BF" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_0999A2CBE91D24D8859D811744678924_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_60CBFC16682A55108CEB66D16E3BBC21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies </link:label>
<link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_0999A2CBE91D24D8859D811744678924_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_60CBFC16682A55108CEB66D16E3BBC21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commitments and Contingencies Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_60CBFC16682A55108CEB66D16E3BBC21" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_60CBFC16682A55108CEB66D16E3BBC21" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_60CBFC16682A55108CEB66D16E3BBC21" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeStatementLocationAxis_FAE862C5FC10742D6BA3117BDA27533B_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationAxis_EEDA80FF5D925110BD778190964702A3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Axis] </link:label>
<link:label id="lab_us-gaap_IncomeStatementLocationAxis_FAE862C5FC10742D6BA3117BDA27533B_label_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationAxis_EEDA80FF5D925110BD778190964702A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_EEDA80FF5D925110BD778190964702A3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_EEDA80FF5D925110BD778190964702A3" xlink:to="lab_us-gaap_IncomeStatementLocationAxis_EEDA80FF5D925110BD778190964702A3" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeStatementLocationDomain_F9C6ACA046EFE291AE64117BDA2750E5_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationDomain_80EFDD9AC6435F019710A6B382BDC4CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Domain] </link:label>
<link:label id="lab_us-gaap_IncomeStatementLocationDomain_F9C6ACA046EFE291AE64117BDA2750E5_label_en-US" xlink:label="lab_us-gaap_IncomeStatementLocationDomain_80EFDD9AC6435F019710A6B382BDC4CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement Location [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_80EFDD9AC6435F019710A6B382BDC4CC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_80EFDD9AC6435F019710A6B382BDC4CC" xlink:to="lab_us-gaap_IncomeStatementLocationDomain_80EFDD9AC6435F019710A6B382BDC4CC" xlink:type="arc"/>
<link:label id="lab_us-gaap_CostOfSalesMember_EBA04055B2BA2E32372F117BDA27A42E_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfSalesMember_F858481DBABD521EA33132ADF60EB432" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cost of product sales </link:label>
<link:label id="lab_us-gaap_CostOfSalesMember_EBA04055B2BA2E32372F117BDA27A42E_label_en-US" xlink:label="lab_us-gaap_CostOfSalesMember_F858481DBABD521EA33132ADF60EB432" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost of Sales [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfSalesMember" xlink:label="loc_us-gaap_CostOfSalesMember_F858481DBABD521EA33132ADF60EB432" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfSalesMember_F858481DBABD521EA33132ADF60EB432" xlink:to="lab_us-gaap_CostOfSalesMember_F858481DBABD521EA33132ADF60EB432" xlink:type="arc"/>
<link:label id="lab_aqms_OperationAndDevelopmentExpenseMember_6A09E7DBF7D7C69B662B117BDA2729F0_terseLabel_en-US" xlink:label="lab_aqms_OperationAndDevelopmentExpenseMember_109F4CBA1E7657F982DC1016F2A15B8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Research and development cost </link:label>
<link:label id="lab_aqms_OperationAndDevelopmentExpenseMember_6A09E7DBF7D7C69B662B117BDA2729F0_label_en-US" xlink:label="lab_aqms_OperationAndDevelopmentExpenseMember_109F4CBA1E7657F982DC1016F2A15B8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Research and Development Cost [Member] </link:label>
<link:label id="lab_aqms_OperationAndDevelopmentExpenseMember_6A09E7DBF7D7C69B662B117BDA2729F0_documentation_en-US" xlink:label="lab_aqms_OperationAndDevelopmentExpenseMember_109F4CBA1E7657F982DC1016F2A15B8B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Primary financial statement caption encompassing operation and development cost. </link:label>
<link:loc xlink:href="aqms-20190930.xsd#aqms_OperationAndDevelopmentExpenseMember" xlink:label="loc_aqms_OperationAndDevelopmentExpenseMember_109F4CBA1E7657F982DC1016F2A15B8B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_aqms_OperationAndDevelopmentExpenseMember_109F4CBA1E7657F982DC1016F2A15B8B" xlink:to="lab_aqms_OperationAndDevelopmentExpenseMember_109F4CBA1E7657F982DC1016F2A15B8B" xlink:type="arc"/>
<link:label id="lab_us-gaap_GeneralAndAdministrativeExpenseMember_4E528D0FC6F1C7369FDE117BDA270B03_terseLabel_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpenseMember_6442264E920E5087B4D753F84E4062F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> General and administrative expense </link:label>
<link:label id="lab_us-gaap_GeneralAndAdministrativeExpenseMember_4E528D0FC6F1C7369FDE117BDA270B03_label_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpenseMember_6442264E920E5087B4D753F84E4062F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> General and Administrative Expense [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_6442264E920E5087B4D753F84E4062F1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeneralAndAdministrativeExpenseMember_6442264E920E5087B4D753F84E4062F1" xlink:to="lab_us-gaap_GeneralAndAdministrativeExpenseMember_6442264E920E5087B4D753F84E4062F1" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensation_CC767FB0A8E75EDF4F65117BDA27F2EB_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_3D5E94E5172854C5B9AC6A3F6A57C223" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_3D5E94E5172854C5B9AC6A3F6A57C223" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_3D5E94E5172854C5B9AC6A3F6A57C223" xlink:to="lab_us-gaap_ShareBasedCompensation_3D5E94E5172854C5B9AC6A3F6A57C223" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_EE7BEBAB790F75956A9C811744E3ABE3_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_3BCCD49FE68B50269C7AFF5C873727D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and equipment, net </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_EE7BEBAB790F75956A9C811744E3ABE3_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_3BCCD49FE68B50269C7AFF5C873727D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_3BCCD49FE68B50269C7AFF5C873727D2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_3BCCD49FE68B50269C7AFF5C873727D2" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTextBlock_3BCCD49FE68B50269C7AFF5C873727D2" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_97696D37A8F33977C6A88BB790315B69_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_85270764AA7B576CA8DEA22EFFE7D808" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property and equipment, net </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_97696D37A8F33977C6A88BB790315B69_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_85270764AA7B576CA8DEA22EFFE7D808" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_85270764AA7B576CA8DEA22EFFE7D808" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_85270764AA7B576CA8DEA22EFFE7D808" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_85270764AA7B576CA8DEA22EFFE7D808" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_6836EA62AB8B30DB42FB811744EB3442_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_B7C5575C85D45972B4BDC3723887B8E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Inventory </link:label>
<link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_6836EA62AB8B30DB42FB811744EB3442_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_B7C5575C85D45972B4BDC3723887B8E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Inventory, Current [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_B7C5575C85D45972B4BDC3723887B8E1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_B7C5575C85D45972B4BDC3723887B8E1" xlink:to="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_B7C5575C85D45972B4BDC3723887B8E1" xlink:type="arc"/>
</link:labelLink>
</link:linkbase>

2 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/19/21  Aqua Metals, Inc.                 424B5                  1:423K                                   RDG Filings/FA
 2/17/21  Aqua Metals, Inc.                 424B5                  1:392K                                   RDG Filings/FA
↑Top
Filing Submission 0001621832-19-000109   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Sun., May 5, 8:19:05.1pm ET