Analytical Methods Approved for Drinking Water Compliance
Monitoring of Organic Contaminants
Analysis for the following organic 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 141.24.
Additional methods are listed in Appendix A to Subpart C of Part 141.
The CFR is the legal reference for approved methods and takes precedence over this table. The table should accurately reflect the
analytical methods information published in 40 CFR 141.
Organic Contaminants:
1,1,1-Trichloroethane
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
SEPA
United States
Environmental Protection
Agency
Office of Water (MS - 4606 M)
EPA 815-B-19-003
April 2019

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Page 2 of 36
1,1,2-Trichloroethane
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
lylene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
May 2013
EPA 815-R-13-002
EPA 815-R-13-002

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Page 3 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas



1,2-Dichlorobenzene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
1,2,4-Trichlorobenzene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
June 2009
EPA 815-B-09-009
EPA 815-B-09-009

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Page 4 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


Capillary Column Gas
Chromatography/Mass
Spectrometry



524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
1,2-Dichloroethane
1,2-Dichloropropane
lane
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index

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Page 5 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
1,4-Dichlorobenzene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002

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Page 6 of 36
2,3,7,8-TCDD (Dioxin")
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
1613
EPA
Tetra- through Octa-Chlorinated
Dioxins and Furans by Isotope-
Dilution HRGC/HRMS
October 1994
E PA/82 l-B-94-005
E PA/82 l-B-94-005
2,4,5-TP (Silvex)
Accurate determination of the c
ilorinated esters requires hydrolysis of the sample as described in the approved methods.
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
D5317-93
ASTM
International
Standard Test Method for
Determination of Chlorinated
Organic Acid Compounds in Water
by Gas Chromatography with an
Electron Capture Detector
1993

ASTM International
D5317-98
ASTM
International
Standard Test Method for
Determination of Chlorinated
Organic Acid Compounds in Water
by Gas Chromatography with an
Electron Capture Detector
1998

ASTM International
515.1, Rev.
4.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water
December
1988, Revised
July 1991
EPA/600/4-88-039
EPA/600/4-88-039
515.2, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
515.3, Rev.
1.0
EPA
In Methods for the Determination
of Organic and Inorganic
Compounds in Drinking Water,
Volume 1
August 2000
EPA 815-R-00-014
National Environmental Methods Index
515.4, Rev.
1.0
EPA
Determination of Chlorinated Acids
in Drinking Water by Liquid-Liquid
Microextraction, Derivatization,
and Fast Gas Chromatography
with Electron Capture Detection
April 2000
EPA/815/B-00/001
EPA/815/B-00/001

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Page 7 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
555, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement II
August 1992
EPA/600/R-92/129
National Environmental Methods Index
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6640 B-01
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2001

Standard Methods
6640 B-06
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2006

Standard Methods
2,4-D (as acid, salts and esters)
Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in the approved methods.
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
D5317-93
ASTM
International
Standard Test Method for
Determination of Chlorinated
Organic Acid Compounds in Water
by Gas Chromatography with an
Electron Capture Detector
1993

ASTM International
D5317-98
ASTM
International
Standard Test Method for
Determination of Chlorinated
Organic Acid Compounds in Water
1998

ASTM International

-------
Page 8 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


by Gas Chromatography with an
Electron Capture Detector



515.1, Rev.
4.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water
December
1988, Revised
July 1991
EPA/600/4-88-039
EPA/600/4-88-039
515.2, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
515.3, Rev.
1.0
EPA
In Methods for the Determination
of Organic and Inorganic
Compounds in Drinking Water,
Volume 1
August 2000
EPA 815-R-00-014
National Environmental Methods Index
515.4, Rev.
1.0
EPA
Determination of Chlorinated Acids
in Drinking Water by Liquid-Liquid
Microextraction, Derivatization,
and Fast Gas Chromatography
with Electron Capture Detection
April 2000
EPA/815/B-00/001
EPA/815/B-00/001
555, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement II
August 1992
E PA/600/R-92/129
National Environmental Methods Index
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6640 B-01
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2001

Standard Methods
6640 B-06
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
2006

Standard Methods

-------
Page 9 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


Subpart C of Part 141 are
approved.



Alachlor
Note regarding EPA Methods 505, 507 and 508.1: Substitution of the detector specified in Methods 505, 507, or 508.1 for the purpose of achieving lower
detection limits is allowed as follows - either an electron capture or nitrogen phosphorus detector may be used provided all regulatory requirements and quality
control criterial are met.
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
507, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Atrazine
Note regarding EPA Methods 505, 507 and 508.1: Substitution of the detector specified in Methods 505, 507, or 508.1 for the purpose of achieving lower
detection limits is allowed as follows - either an electron capture or nitrogen phosphorus detector may be used provided all regulatory requirements and quality
control criterial are met.
Note regarding Syngenta Method AG-625: This method may not be used for the analysis of atrazine in any system where chlorine dioxide is used for drinking
water treatment. In samples from all other systems, any result for atrazine that is greater than one-half the MCL (i.e. greater than 1.5 ng/L) must be confirmed

-------
Page 10 of 36
using another approved method for atrazine and should use additional volume of the original sample collected for compliance monitoring. In instances where a
result from Syngenta Method AG-625 triggers such confirmatory testing, the confirmatory result is to be used to determine compliance.
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
507, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
536
EPA
Determination ofTriazine
Pesticides and their Degradates in
Drinking Water by Liquid
Chromatography Electrospray
Ionization Tandem Mass
Spectrometry (LC/ESI-MS/MS)
October 2007
EPA 815-B-07-002
EPA 815-B-07-002
523
EPA
Determination ofTriazine
Pesticides and their Degradates in
Drinking Water by Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2011
EPA 815-R-11-002
EPA 815-R-11-002
Syngenta
AG-625
Syngenta Crop
Protection, Inc.
Atrazine in Drinking Water by
Immunoassay
See note under the "Atrazine"
header above.
February
2001

National Environmental Methods Index

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Page 11 of 36
Benzene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
Benzo[a]pyrene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
EPA/600/R-12/010
EPA/600/R-12/010
550
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement 1
July 1990
EPA/600/4-90/020
National Environmental Methods Index
550.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement 1
July 1990
EPA/600/4-90/020
National Environmental Methods Index

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Page 12 of 36
Carbofuran
Carbon Tetrac
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
531.1, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compound in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
531.2, Rev.
1.0
EPA
Measurement of N-Methyl-
carbamoyloximes and N-
Methylcarbamates in Water by
Direct Aqueous Injection HPLC with
Post Column Derivatization
September
2001
EPA 815/B/01/002
EPA 815/B/01/002
6610 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods
6610 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6610 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6610 B-04
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2004

Standard Methods
lloride
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
June 2009
EPA 815-B-09-009
EPA 815-B-09-009

-------
Page 13 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


Chromatography/Mass
Spectrometry



524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Chlordane
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010

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Page 14 of 36
Chlorobenzene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
cis-Dichloroethylene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
May 2013
EPA 815-R-13-002
EPA 815-R-13-002

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Page 15 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


Spectrometry using Nitrogen Purge
Gas



Dalapon
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
515.1, Rev.
4.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water
December
1988, Revised
July 1991
EPA/600/4-88-039
EPA/600/4-88-039
515.3, Rev.
1.0
EPA
In Methods for the Determination
of Organic and Inorganic
Compounds in Drinking Water,
Volume 1
August 2000
EPA 815-R-00-014
National Environmental Methods Index
515.4, Rev.
1.0
EPA
Determination of Chlorinated Acids
in Drinking Water by Liquid-Liquid
Microextraction, Derivatization,
and Fast Gas Chromatography
with Electron Capture Detection
April 2000
EPA/815/B-00/001
EPA/815/B-00/001
552.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
1/l/ater-Supplement II
August 1992
E PA/600/R-92-129
National Environmental Methods Index
552.2, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
1/l/ater-Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
552.3, Rev.
1.0
EPA
Determination of Haloacetic Acids
and Dalapon in Drinking Water by
Liquid-Liquid Microextraction,
Derivatization, and Gas
Chromatography with Electron
Capture Detection
July 2003
EPA 815-B-03-002
EPA 815-B-03-002
557
EPA
Determination of Haloacetic Acids,
Bromate, and Dalapon in Drinking
Water by Ion Chromatography
Electrospray Ionization Tandem
Mass Spectrometry (IC-ESI-
MS/MS)
September
2009
EPA 815-B-09-012
EPA 815-B-09-012

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Page 16 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6640 B-01
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2001

Standard Methods
6640 B-06
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2006

Standard Methods
D i (2 - ethylh exylladipate
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
506, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
l/l/ater-Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
EPA/600/R-12/010
EPA/600/R-12/010

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Page 17 of 36
D i (2 - ethylh exyl)phthalate
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
506, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
1/l/ater-Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
EPA/600/R-12/010
EPA/600/R-12/010
Dibromochloropropane (DBCP)
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
504.1, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Dichloromethane
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index

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Page 18 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
Dinoseb
Accurate determination of the c
ilorinated esters requires hydrolysis of the sample as described in the approved methods.
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
515.1, Rev.
4.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water
December
1988, Revised
July 1991
EPA/600/4-88-039
EPA/600/4-88-039
515.2, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
515.3, Rev.
1.0
EPA
In Methods for the Determination
of Organic and Inorganic
Compounds in Drinking Water,
Volume 1
August 2000
EPA 815-R-00-014
National Environmental Methods Index
515.4, Rev.
1.0
EPA
Determination of Chlorinated Acids
in Drinking Water by Liquid-Liquid
Microextraction, Derivatization,
and Fast Gas Chromatography
with Electron Capture Detection
April 2000
EPA/815/B-00/001
EPA/815/B-00/001
555, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement II
August 1992
EPA/600/R-92/129
National Environmental Methods Index

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Page 19 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6640 B-01
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2001

Standard Methods
6640 B-06
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2006

Standard Methods
Diquat
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
549.2, Rev.
1.0
EPA
In Methods for the Determination
of Organic and Inorganic
Compounds in Drinking Water,
Volume 1
August 2000
EPA 815-R-00-014
National Environmental Methods Index
Endothall
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
548.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water, Supplement II
August 1992
EPA/600/R-92/129
National Environmental Methods Index

-------
Page 20 of 36
Endrin
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination of Semivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Ethylbenzene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009

-------
Page 21 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
Ethylene DibromideTEDB]
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
504.1, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Glyphosate
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
547
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement 1
July 1990
EPA/600/4-90/020
National Environmental Methods
Index
6651
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 18th Edition
1992

Standard Methods
6651
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 19th Edition
1995

Standard Methods
6651
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 20th Edition
1998

Standard Methods

-------
Page 22 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
6651 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods
6651 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6651 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6651 B-00
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2000

Standard Methods
6651 B-05
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2005

Standard Methods
Heptachlor
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index

-------
Page 23 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Heptachlor Epoxide
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index

-------
Page 24 of 36
Hexachlorobenzene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
H exachlor o cyclopentadiene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index

-------
Page 25 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Lindane
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination of Semivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index

-------
Page 26 of 36
Methoxychlor
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Oxamyl
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
531.1, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compound in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
531.2, Rev.
1.0
EPA
Measurement of N-Methyl-
carbamoyloximes and N-
Methylcarbamates in Water by
Direct Aqueous Injection HPLC with
Post Column Derivatization
September
2001
EPA 815/B/01/002
EPA 815/B/01/002
6610 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods

-------
Page 27 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
6610 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6610 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6610 B-04
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2004

Standard Methods
PCBs (as Arochlors)
PCBs are qualitatively identified as Aroclors and measured for compliance purposes as decachlorobiphenyl. Users of Method 505 may have more difficulty
achieving the required detection levels than users of Methods 508.1, 525.2, 525.3 or 508.	
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010

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Page 28 of 36
PCBs (as decachlorobiphenyl)
PCBs are only measured for compliance purposes as decachlorobiphenyl.
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
508A, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water
December
1988, Revised
July 1991
EPA/600/4-88-039
National Environmental Methods Index
Pentachlorophenol
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
D5317-93
ASTM
International
Standard Test Method for
Determination of Chlorinated
Organic Acid Compounds in Water
by Gas Chromatography with an
Electron Capture Detector
1993

ASTM International
D5317-98
ASTM
International
Standard Test Method for
Determination of Chlorinated
Organic Acid Compounds in Water
by Gas Chromatography with an
Electron Capture Detector
1998

ASTM International
515.1, Rev.
4.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water
December
1988, Revised
July 1991
EPA/600/4-88-039
EPA/600/4-88-039
515.2, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
515.3, Rev.
1.0
EPA
In Methods for the Determination
of Organic and Inorganic
Compounds in Drinking Water,
Volume 1
August 2000
EPA 815-R-00-014
National Environmental Methods Index
515.4, Rev.
1.0
EPA
Determination of Chlorinated Acids
in Drinking Water by Liquid-Liquid
Microextraction, Derivatization,
and Fast Gas Chromatography
with Electron Capture Detection
April 2000
EPA/815/B-00/001
EPA/815/B-00/001
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index

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Page 29 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
555, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement II
August 1992
EPA/600/R-92/129
National Environmental Methods Index
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6640 B-01
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2001

Standard Methods
6640 B-06
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2006

Standard Methods
Picloram
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
D5317-93
ASTM
International
Standard Test Method for
Determination of Chlorinated
Organic Acid Compounds in Water
1993

ASTM International

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Page 30 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


by Gas Chromatography with an
Electron Capture Detector



D5317-98
ASTM
International
Standard Test Method for
Determination of Chlorinated
Organic Acid Compounds in Water
by Gas Chromatography with an
Electron Capture Detector
1998

ASTM International
515.1, Rev.
4.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water
December
1988, Revised
July 1991
EPA/600/4-88-039
EPA/600/4-88-039
515.2, Rev.
1.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
515.3, Rev.
1.0
EPA
In Methods for the Determination
of Organic and Inorganic
Compounds in Drinking Water,
Volume 1
August 2000
EPA 815-R-00-014
National Environmental Methods Index
515.4, Rev.
1.0
EPA
Determination of Chlorinated Acids
in Drinking Water by Liquid-Liquid
Microextraction, Derivatization,
and Fast Gas Chromatography
with Electron Capture Detection
April 2000
EPA/815/B-00/001
EPA/815/B-00/001
555, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement II
August 1992
EPA/600/R-92/129
National Environmental Methods Index
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 21st Edition
2005

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 22nd Edition
2012

Standard Methods
6640 B
Standard
Methods
Standard Methods for the
Examination of Water and
Wastewater, 23rd Edition
2017

Standard Methods
6640 B-01
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
2001

Standard Methods

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Page 31 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


Subpart C of Part 141 are
approved.



6640 B-06
Standard
Methods Online
Online version. Approval year is
designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.
2006

Standard Methods
Simazine
Note regarding EPA Methods 505, 507 and 508.1: Substitution of the detector specified in Methods 505, 507, or 508.1 for the purpose of achieving lower
detection limits is allowed as follows - either an electron capture or nitrogen phosphorus detector may be used provided all regulatory requirements and quality
control criterial are met.
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
507, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
536
EPA
Determination ofTriazine
Pesticides and their Degradates in
Drinking Water by Liquid
October 2007
EPA 815-B-07-002
EPA 815-B-07-002

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Page 32 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


Chromatography Electrospray
Ionization Tandem Mass
Spectrometry (LC/ESI-MS/MS)



523
EPA
Determination ofTriazine
Pesticides and their Degradates in
Drinking Water by Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2011
EPA 815-R-11-002
EPA 815-R-11-002
Styrene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
T etrachlor oethylene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index

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Page 33 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Toluene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002

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Page 34 of 36
Toxaphene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
505, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508, Rev.
3.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
508.1, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
E PA/600/R-95-131
National Environmental Methods Index
525.2, Rev.
2.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
525.3
EPA
Determination ofSemivolatile
Organic Chemicals in Drinking
Water by Solid Phase Extraction
and Capillary Column Gas
Chromatography/Mass
Spectrometry (GC/MS)
February
2012
E P A/600/R-12/010
EPA/600/R-12/010
trans-Dichloroethylene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002

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Page 35 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method


Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas



Trichloroethylene
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
551.1, Rev.
1.0
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
Vinyl Chloride
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index

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Page 36 of 36
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002
Xylenes (total)
Method
Organization
Reference Title
Date
EPA Publication
Number
Source of Method
502.2, Rev.
2.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Method Index
524.2, Rev.
4.1
EPA
In Methods for the Determination
of Organic Compounds in Drinking
Water - Supplement III
August 1995
EPA/600/R-95-131
National Environmental Methods Index
524.3
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry
June 2009
EPA 815-B-09-009
EPA 815-B-09-009
524.4
EPA
Measurement of Purgeable
Organic Compounds in Water by
Capillary Column Gas
Chromatography/Mass
Spectrometry using Nitrogen Purge
Gas
May 2013
EPA 815-R-13-002
EPA 815-R-13-002

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