Analytical Methods Approved for Compliance Monitoring under the Ground Water Rule

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Analytical Methods Approved for Compliance Monitoring

^ under the Ground Water Rule

£j Analysis for the following contaminants shall be conducted in accordance with the methods in the following table or their equivalent as determined by EPA.
The methods and monitoring requirements for these contaminants are specified in 40 CFR 141.402 and 141.403. Additional methods are listed in Appendix
j? A to Subpart C of Part 141.
The CFR is the legal reference for approved methods and takes precedent over this table. The table should accurately reflect the analytical methods
information published in 40 CFR 141. If you find discrepancies, please notify The Safe Drinking Water Hotline (800-426-4791) so that EPA can correct the
table.
Contaminant

Method Organization Reference Title
Date
EPA
Publication
Number
Source of Method
Microbial Contaminants

The time from sample collection to initiation of analysis may not exceed 30 hours. The ground water system is encouraged but is not required to hold samples
Escherichia coli
1604
below 10°C during transit.

A standard sample volume of at least 100 mL must be collected for fecal indicator analysis regardless of the fecal indicator or analytical method used.

EPA Total Coliforms and Escherichia coli September EPA 821-R-02-024 http://www.epa.gov/nerlcwww/online.htm
(E. coli) in Water by Membrane 2002
Filtration by Using a Simultaneous
Detection Technique (MI Medium)

This method incorporates MI agar into Standard Method 9222 as described for the analysis of Total Coliforms in the Total Coliform Rule
9221 F Standard
Methods
9222 G Standard
Methods
9223 Standard
Methods
9223 Standard
Methods
Standard Methods for the Examination 1 998
of Water and Wastewater, 20th Edition
EC-MUG (Method 9221 F) or NA-MUG (Method 9222 G) can be used for E.
of Standard Methods 9221 B, 9221 D, 9222 B, or 9222 C.
Standard Methods for the Examination 1 998
of Water and Wastewater, 20th Edition
EC-MUG (Method 9221 F) or NA-MUG (Method 9222 G) can be used for E.
of Standard Methods 9221 B, 9221 D, 9222 B, or 9222 C.
Standard Methods for the Examination 1 998
of Water and Wastewater, 20th Edition
Colilert®, Colisure®, and Colilert-18® media are approved for use.
Standard Methods for the Examination 2005
of Water and Wastewater, 2 1 st Edition
Colilert®, Colisure®, and Colilert-18® media are approved for use.
Standard Methods
coli testing step as described in 141
Standard Methods
coli testing step as described in 141
Standard Methods
Standard Methods
.21(f)(6)(i) or (iii) after use
.21(f)(6)(i) or (iii) after use

Revised June 2008
Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
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    Contaminant
      Method      Organization     Reference Title
                                                                      Date
                                                     EPA
                                                     Publication
                                                     Number
                                          Source of Method
Microbial Contaminants
    Escherichia coli
                      The time from sample collection to initiation of analysis may not exceed 30 hours. The ground water system is encouraged but is not required to hold samples
                      below 10°C during transit.
                      A standard sample volume of at least 100 mL must be collected for fecal indicator analysis regardless of the fecal indicator or analytical method used.

9223 B-97        Standard        Online version of Standard Methods for                                              http://www.standardmethods.ore,/
                 Methods        the Examination of Water and
                 Online          Wastewater. Approval year by Standard
                                 Methods Committee is designated by
                                 last 2 digits. This is the only online
                                 version that is approved.
                                       Colilert®, Colisure®, and Colilert-18® media are approved for use.
      E*Colite® Test    Charm          Charm E*Colite Test, "Charm E*Colite
                       Sciences, Inc.    Presence/Absence Test for Detection
                                       and Identification of Coliform Bacteria
                                       and Escherichia coli in Drinking Water"
                                                                      January 9,
                                                                      1998
                                                                               Charm Sciences, Inc
      m-ColiBlue24®    Hach Co.        m-ColiBlue 24 Test, "Total Coliforms
      Test                              and E. coli Membrane Filtration
                                       Method with m-ColiBlue 24 Broth,"
                                       Method No. 10029, Revision 2.
                                                                      August 17,
                                                                      1999
                                                                               Hach Company
    Enterococci
      1600
      9230 B
                      The time from sample collection to initiation of analysis may not exceed 30 hours. The ground water system is encouraged but is not required to hold samples
                      below 10°C during transit.
                     A standard sample volume of at least 100 mL must be collected for fecal indicator analysis regardless of the fecal indicator or analytical method used.

                 EPA            Enterococci in Water by Membrane       September      EPA 821-R-02-022           http://www.epa.gov/nerlcwww/online.htm
Enterococci in Water by Membrane
Filtration Using membrane-
EnterococcusIndoxyl-B-D-Glucoside
Agar (mEI)
September
2002
                                             EPA Method 1600 is an approved variation of Standard Method 9230 C. The holding time and temperature for ground water samples are
                                             specified in the rule (see above note), rather than as specified in Section 8 of EPA Method 1600.
                 Standard        Standard Methods for the Examination     1998
                 Methods        of Water and Wastewater, 20th Edition
                                                                               Standard Methods
      9230 C
                 Standard        Standard Methods for the Examination     1998
                 Methods        of Water and Wastewater, 20th Edition
                                                                               Standard Methods
 Revised June 2008
                                        Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
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    Contaminant
      Method      Organization    Reference Title
                                                    Date
                                                    EPA
                                                    Publication
                                                    Number
                                          Source of Method
Microbial Contaminants
    Enterococci
    The time from sample collection to initiation of analysis may not exceed 30 hours. The ground water system is encouraged but is not required to hold samples
    below 10°C during transit.
    A standard sample volume of at least 100 mL must be collected for fecal indicator analysis regardless of the fecal indicator or analytical method used.

                                                    1996                                      IDEXX Laboratories, Inc.
      Enterolert         IDEXX         Budnick, G.E., et.al, Evaluation of
                       Laboratories,    Enterolert for Enumeration of
                       Inc.            Enterococci in Recreational Waters,
                                      Applied and Environmental
                                      Microbiology, 62:3881-3884
    Coliphage
      1602
    The time from sample collection to initiation of analysis may not exceed 30 hours. The ground water system is encouraged but is not required to hold samples
    below 10°C during transit.
                           A standard sample volume of at least 100 mL must be collected for fecal indicator analysis regardless of the fecal indicator or analytical method used.

      1601             EPA           Male-specifice (F+) and Somatic         April 2001      EPA 821-R-01-030          http://www.epa.gov/nerlcwww/online.htm
                                      Coliphage in Water by Two-step
                                      Enrichment Procedure
EPA
Male-specifice (F+) and Somatic
Coliphage in Water by Single Agar
Layer (SAL) Procedure
April 2001
EPA 821-R-01-029
http://www.epa.gov/nerlcwww/online.htm
Disinfectants
    Free Chlorine
    If approved by the State, residual disinfectant concentrations for free chlorine and combined chlorine may be measured using DPD colorimetric test kits.
    If approved by the State, free chlorine may be measured using ITS free chlorine test strips. Use of the test strips is described in Method D99-003, "Free Chlorine
    Species (HOC1- and OC1-) by Test Strip," Revision 3.0, November 21, 2003, available from Industrial Test Systems, Inc., 1875 Langston St., Rock Hill, SC 29730.
4500-C1 D
4500-C1 D
4500-C1 D
4500-C1 D
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Standard Methods for the Examination
of Water and Wastewater, 18th Edition
Standard Methods for the Examination
of Water and Wastewater, 19th Edition
Standard Methods for the Examination
of Water and Wastewater, 20th Edition
Standard Methods for the Examination
of Water and Wastewater, 2 1 st Edition
1992
1995
1998
2005
Standard Methods
Standard Methods
Standard Methods
Standard Methods
 Revised June 2008
                       Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
                                                                                                                   Page 3 of 10

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   Contaminant
     Method     Organization    Reference Title
                         Date
EPA
Publication
Number
Source of Method
Disinfectants
Free Chlorine ltapprw
It appro\
Species
4500-C1 D-00 Standard
Methods
Online
4500-C1 F Standard
Methods
4500-C1 F Standard
Methods
4500-C1 F Standard
Methods
4500-C1 F Standard
Methods
4500-C1 F-00 Standard
Methods
Online
4500-C1 G Standard
Methods
4500-C1 G Standard
Methods
4500-C1 G Standard
Methods
fed by the State, residual disinfectant concentrations for free chlorine and combined chlonne may be measured using DPD colonmetnc test kits.
fed by the State, free chlorine may be measured using ITS free chlorine test strips. Use of the test strips is described in Method D99-003, "Free Chlorine
TTOC1- and OC1-) by Test Strip," Revision 3.0, November 21, 2003, available from Industrial Test Systems, Inc., 1875 Langston St., Rock Hill, SC 29730.
Online version of Standard Methods for http://www.standardmethods.org/
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Standard Methods for the Examination
of Water and Wastewater, 18th Edition
Standard Methods for the Examination
of Water and Wastewater, 19th Edition
Standard Methods for the Examination
of Water and Wastewater, 20th Edition
Standard Methods for the Examination
of Water and Wastewater, 2 1 st Edition
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Standard Methods for the Examination
of Water and Wastewater, 18th Edition
Standard Methods for the Examination
of Water and Wastewater, 19th Edition
Standard Methods for the Examination
of Water and Wastewater, 20th Edition
1992
1995
1998
2005

1992
1995
1998
Standard Methods
Standard Methods
Standard Methods
Standard Methods
http: //www. standardmethods. ore,/
Standard Methods
Standard Methods
Standard Methods
 Revised June 2008
Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
                                                     Page 4 of 10

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Contaminant
Method Organization Reference Title
Date
EPA
Publication
Number
Source of Method
Disinfectants
Free Chlorine ltapprove
It approve
Species (f
4500-C1 G Standard
Methods
4500-C1 G-00 Standard
Methods
Online
4500-C1 H Standard
Methods
4500-C1 H Standard
Methods
4500-C1 H Standard
Methods
4500-C1 H Standard
Methods
4500-C1 H-00 Standard
Methods
Online
D1253-03 ASTM
International
D1253-86 ASTM
International
d by the State, residual disinfectant concentrations for free chlorine and combined chlonne may be measured using DPD colonmetnc test kits.
d by the State, free chlorine may be measured using ITS free chlorine test strips. Use of the test strips is described in Method D99-003, "Free Chlorine
[OC1- and OC1-) by Test Strip," Revision 3.0, November 21, 2003, available from Industrial Test Systems, Inc., 1875 Langston St., Rock Hill, SC 29730.
Standard Methods for the Examination 2005 Standard Methods
of Water and Wastewater, 2 1 st Edition
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Standard Methods for the Examination
of Water and Wastewater, 18th Edition
Standard Methods for the Examination
of Water and Wastewater, 19th Edition
Standard Methods for the Examination
of Water and Wastewater, 20th Edition
Standard Methods for the Examination
of Water and Wastewater, 2 1 st Edition
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Annual Book of ASTM Standards, Vol.
11.01
Annual Book of ASTM Standards, Vol.
11.01
http: //www. standardmethods. org/
1992 Standard Methods
1995 Standard Methods
1998 Standard Methods
2005 Standard Methods
http: //www. standardmethods. org/
http: //www.astm. org
http: //www.astm. org
Revised June 2008
Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
Page 5 of 10

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Contaminant
Method Organization
Disinfectants
Total Chlorine
4500-Cl D
4500-C1 D
4500-Cl D
4500-Cl D
4500-Cl D-00
4500-Cl E
4500-Cl E
4500-Cl E
4500-Cl E
4500-Cl E-00

11 approve
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Online
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Online
Reference Title Date
EPA
Publication
Number Source of Method
d by the State, residual disinfectant concentrations for free chlorine and combined chlorine may be measured using DPD colorimetric test kits.
Standard Methods for the Examination 1 992 Standard Methods
of Water and Wastewater, 18th Edition
Standard Methods for the Examination 1 995
of Water and Wastewater, 19th Edition
Standard Methods for the Examination 1 998
of Water and Wastewater, 20th Edition
Standard Methods for the Examination 2005
of Water and Wastewater, 2 1 st Edition
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Standard Methods for the Examination 1 992
of Water and Wastewater, 18th Edition
Standard Methods for the Examination 1 995
of Water and Wastewater, 19th Edition
Standard Methods for the Examination 1 998
of Water and Wastewater, 20th Edition
Standard Methods for the Examination 2005
of Water and Wastewater, 2 1 st Edition
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Standard Methods
Standard Methods
Standard Methods
http: //www. standardmethods. ore,/
Standard Methods
Standard Methods
Standard Methods
Standard Methods
http: //www. standardmethods. org/
Revised June 2008
Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
Page 6 of 10

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Contaminant
Method Organization
Disinfectants
Total Chlorine
4500-Cl F
4500-C1 F
4500-Cl F
4500-Cl F
4500-Cl F-00
4500-Cl G
4500-Cl G
4500-Cl G
4500-Cl G
4500-Cl G-00

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Contaminant
Method Organization
Disinfectants
Total Chlorine ltapprove
4500-Cl I Standard
Methods
4500-Cl I Standard
Methods
4500-Cl I Standard
Methods
4500-Cl I Standard
Methods
4500-Cl 1-00 Standard
Methods
Online
D1253-03 ASTM
International
D1253-86 ASTM
International

Chlorine Dioxide
327 Rev 1.1 EPA
4500-C102 C Standard
Methods
EPA
Publication
Reference Title Date Number
Source of Method
d by the State, residual disinfectant concentrations for free chlorine and combined chlorine may be measured using DPD colorimetric test kits.
Standard Methods for the Examination 1 992 Standard Methods
of Water and Wastewater, 18th Edition
Standard Methods for the Examination 1 995
of Water and Wastewater, 19th Edition
Standard Methods for the Examination 1 998
of Water and Wastewater, 20th Edition
Standard Methods for the Examination 2005
of Water and Wastewater, 2 1 st Edition
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Annual Book of ASTM Standards, Vol.
11.01
Annual Book of ASTM Standards, Vol.
11.01
Determination of Chlorine Dioxide and May 2005 EPA 8 1 5-R-05-008
Chlorite Ion in Drinking Water Using
Lissamine Green B and Horseradish
Peroxidase with Detection by Visible
Spectrophotometry
Standard Methods for the Examination 1 992
of Water and Wastewater, 18th Edition
Standard Methods
Standard Methods
Standard Methods
http: //www. standardmethods. ore,/
http: //www.astm. org
http: //www.astm. org
http://www.epa.gov/safewater/methods/sourcalt.html

Standard Methods
Revised June 2008
Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
Page 8 of 10

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   Contaminant
     Method     Organization    Reference Title
                         Date
EPA
Publication
Number
Source of Method
Disinfectants
Chlorine Dioxide
4500-C102 C
4500-C102 C
4500-C102 C
4500-C1O2 C-00
4500-C102 D
4500-C102 D
4500-C102 D
4500-C1O2 E
4500-C1O2 E
4500-C1O2 E
4500-C102 E
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Online
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Standard
Methods
Standard Methods for the Examination
of Water and Wastewater, 19th Edition
Standard Methods for the Examination
of Water and Wastewater, 20th Edition
Standard Methods for the Examination
of Water and Wastewater, 2 1 st Edition
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Standard Methods for the Examination
of Water and Wastewater, 18th Edition
Standard Methods for the Examination
of Water and Wastewater, 19th Edition
Standard Methods for the Examination
of Water and Wastewater, 20th Edition
Standard Methods for the Examination
of Water and Wastewater, 18th Edition
Standard Methods for the Examination
of Water and Wastewater, 19th Edition
Standard Methods for the Examination
of Water and Wastewater, 20th Edition
Standard Methods for the Examination
of Water and Wastewater, 2 1 st Edition
1995
1998
2005

1992
1995
1998
1992
1995
1998
2005
Standard Methods
Standard Methods
Standard Methods
http: //www. standardmethods. org/
Standard Methods
Standard Methods
Standard Methods
Standard Methods
Standard Methods
Standard Methods
Standard Methods
 Revised June 2008
Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
                                                     Page 9 of 10

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Contaminant
Method Organization
Reference Title
Date
EPA
Publication
Number
Source of Method
Disinfectants
Chlorine Dioxide
4500-C1O2 E-00 Standard
Methods
Online
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
http: //www. standardmethods. org/
Ozone
4500-O3 B Standard
Methods
4500-O3 B Standard
Methods
4500-O3 B Standard
Methods
4500-O3 B Standard
Methods
4500-O3 B-97 Standard
Methods
Online
Standard Methods for the Examination 1 992
of Water and Wastewater, 18th Edition
Standard Methods for the Examination 1 995
of Water and Wastewater, 19th Edition
Standard Methods for the Examination 1 998
of Water and Wastewater, 20th Edition
Standard Methods for the Examination 2005
of Water and Wastewater, 2 1 st Edition
Online version of Standard Methods for
the Examination of Water and
Wastewater. Approval year by Standard
Methods Committee is designated by
last 2 digits. This is the only online
version that is approved.
Standard Methods
Standard Methods
Standard Methods
Standard Methods
http: //www. standardmethods. org/
Contact information for methods that are not available on the Internet are summarized in the report titled
"Sources of Approved Analytical Methods for National Drinking Water Regulations."
Revised June 2008
Approved Methods for the Ground Water Rule - National Primary Drinking Water Regulations
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