Analytical Methods Approved for Drinking Water Compliance
Monitoring of Organic Contaminants
,v^^>^ , tu Analysis for the following contaminants shall be conducted in accordance with the methods in the following table, or their equivalent as determined by EPA.
Q \r\|/jX *T 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 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 Number
l,l?l-Trichloroethane
EPA 502. 2 Rev 2.1
EPA 524. 2 Rev 4.1
EPA 551.1 Rev 1.0
l,l?2-Trichloroethane
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
EPA 551.1 Rev 1.0
1,1-Dichloroethylene
EPA 502. 2 Rev 2.1
EPA
Publication
Reference Title Date Number
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
Publication
Order
Number
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
Source of Method
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
Revised June 2008 Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations Page 1 of 21
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Contaminant
Method
Organization Number
1,1-Dichloroethylene
EPA 524. 2 Rev 4.1
1,2 Dichlorobenzene
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
1,2,4-Trichlorobenzene
EPA 502. 2 Rev 2.1
EPA 524. 2 Rev 4.1
1,2-Dichloroethane
EPA 502. 2 Rev 2.1
EPA 524. 2 Rev 4.1
1,2-Dichloropropane
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
Reference Title Date
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
EPA
Publication
Number
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
Publication
Order
Number
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
Source of Method
http://www.nemi
http://www.nemi
http : //www. nemi
http : //www. nemi
http : //www. nemi
http : //www. nemi
http : //www. nemi
http://www.nemi
http://www.nemi
gov
gov
gov
gov
gov
gov
gov
gov
gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 2 of 21
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Contaminant
Method
Organization Number Reference Title
EPA Publication
Publication Order
Date Number Number Source of Method
1,4-Dichlorobenzene
EPA 502.2Rev2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 524.2Rev4.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
2,3,7,8-TCDD (dioxin)
EPA 1613 Tetra-through Octa-Chlorinated October 1994 EPA/821-B-94-005 PB95-104774 National Technical Information Service (NTIS)
Dioxins and Furans by Isotope-Dilution
HRGC/HRMS
Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in EPA Methods 515.1, 515.2, 515.3, 515.4, and 555
and ASTM Methods D5317-93 and D5317-98 (Reapproved 2003).
2,4,5-TP (Silvex)
ASTM D5317-93 Annual Book of ASTM Standards, Vol.
International 11.02
ASTM International (ASTM)
ASTM D5317-98 Annual Book of ASTM Standards, Vol.
International (Reapproved 11.02
2003)
http://www.astm.org
EPA 515.1 Rev 4.0 In Methods for the Determination of December EPA/600/4-88-039 PB91-231480 National Technical Information Service (NTIS)
Organic Compounds in Drinking Water 1988,
Revised July
1991
EPA 515.2 Rev 1.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 515.3 Rev 1.0 In Methods for the Determination of August2000 EPA 815-R-00-014 PB2000-106981 http://www.epa.gov/safewater/methods/sourcalt.html
Organic and Inorganic Compounds in
Drinking Water, Volume 1
EPA
515.4 Rev 1.0 Determination of Chlorinated Acids in April 2000 EPA/815/B-00/001
Drinking Water by Liquid-Liquid
Microextraction, Derivatization, and
Fast Gas Chromatography with Electron
Capture Detection
http://www.epa.gov/safewater/methods/sourcalt.html
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 3 of 21
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Contaminant
Method
Organization Number
Reference Title
Date
EPA
Publication
Number
Publication
Order
Number
Source of Method
2,4,5-TP (Silvex)
Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in EPA Methods 515.1, 515.2, 515.3, 515.4, and 555
and ASTM Methods D5317-93 and D5317-98 (Reapproved 2003).
EPA 555 Rev 1.0 In Methods for the Determination of August 1992 EPA/600/R-92/129 PB92-207703 http://www.nemi.gov
Organic Compounds in Drinking Water
Supplement II
Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in EPA Methods 515.1, 515.2, 515.3, 515.4, and 555
2,4-D (as acid, salts and esters)
and ASTM Methods D5317-93 and D5317-98 (Reapproved 2003).
ASTM D5317-93 Annual Book of ASTM Standards, Vol.
International 11.02
ASTM International (ASTM)
ASTM
International
D5317-98
(Reapproved
2003)
Annual Book of ASTM Standards, Vol.
11.02
http://www.astm.org
EPA
EPA
515.1 Rev 4.0 In Methods for the Determination of December
Organic Compounds in Drinking Water 1988,
Revised July
1991
EPA/600/4-88-039 PB91-231480 National Technical Information Service (NTIS)
EPA 515.2 Rev 1.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 515.3 Rev 1.0 In Methods for the Determination of August2000 EPA 815-R-00-014 PB2000-106981 http://www.epa.gov/safewater/methods/sourcalt.html
Organic and Inorganic Compounds in
Drinking Water, Volume 1
515.4 Rev 1.0 Determination of Chlorinated Acids in April 2000 EPA/815/B-00/001
Drinking Water by Liquid-Liquid
Microextraction, Derivatization, and
Fast Gas Chromatography with Electron
Capture Detection
http://www.epa.gov/safewater/methods/sourcalt.html
EPA
555 Rev 1.0 In Methods for the Determination of August 1992 EPA/600/R-92/129 PB92-207703
Organic Compounds in Drinking Water
Supplement II
http://www.nemi.gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 4 of 21
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Contaminant
Method
Organization Number Reference Title
Alachlor
EPA
Publication
Date Number
Publication
Order
Number
Source of Method
EPA 505 Rev 2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
EPA 507 Rev 2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
EPA 508.1 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
EPA
525.2 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
551.1 Rev 1.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
Atrazine
EPA 505 Rev 2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
EPA 507 Rev 2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 5 of 21
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Contaminant
Method
Organization Number
Atrazine
EPA 508.1 Rev 2.0
EPA 525.2 Rev 2.0
EPA 551.1 Rev 1.0
Syngenta Syngenta AG-
Crop 625
Protection,
Inc.
Benzene
EPA 502. 2 Rev 2.1
EPA 524. 2 Rev 4.1
Benzo(a)pyrene
Reference Title Date
EPA Publication
Publication Order
Number Number
Source of Method
In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
EPA/600/R-95-131 PB95-261616
EPA/600/R-95-131 PB95-261616
http://www.nemi.gov
http://www.nemi.gov
Atrazine in Drinking Water by February Syngenta Crop Protection, Inc.
Immunoassay 2001
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 generated by Method AG-625 that is greater than one-half the maximum contaminant level (MCL)
(in other words, greater than 0. 001 5mg/L or 1.5 ug/L)mustbe confirmed using another approved method for this contaminant and should
use additional volume of the original sample collected for compliance monitoring. In instances where a result from Method AG-625 triggers such
confirmatory testing, the confirmatory result is to be used to determine compliance.
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
EPA/600/R-95-131 PB95-261616
EPA/600/R-95-131 PB95-261616
http://www.nemi.gov
http://www.nemi.gov
EPA
525.2 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
550
In Methods for the Determination of July 1990 EPA/600/4-90/020 PB91-146027
Organic Compounds in Drinking Water
Supplement I
http://www.nemi.gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 6 of 21
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Contaminant
Method
Organization Number
Reference Title
Date
EPA
Publication
Number
Publication
Order
Number
Source of Method
Benzo(a)pyrene
EPA
550.1
In Methods for the Determination of July 1990 EPA/600/4-90/020 PB91-146027 http://www.nemi.gov
Organic Compounds in Drinking Water
Supplement I
Carbofuran
EPA
531.1 Rev 3.1 In Methods for the Determination of Augustl995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
531.2 Rev 1.0 Measurement of N-Methyl- September
carbamoyloximes and N-Methyl- 2001
carbamates in Water by Direct Aqueous
Injection HPLC with Post Column
Derivatization
EPA 815/B/01/002
http://www.epa.gov/safewater/methods/sourcalt.html
Standard 6610 B Standard Methods for the Examination 2005
Methods of Water and Wastewater, 21 st Edition
Standard Methods
Standard 6610 B-04 Online version of Standard Methods for
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.
http: //www. standardmethods. org/
Carbon Tetrachloride
EPA
502.2Rev2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
524.2Rev4.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
551.1 Rev 1.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 7 of 21
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Contaminant
Method
Organization Number
Chlordane
EPA 505 Rev 2.1
EPA 508 Rev 3.1
EPA 508.1 Rev 2.0
EPA 525.2 Rev 2.0
Chlorobenzene
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
cis-Dichloroethylene
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
Dalapon
EPA
Publication
Reference Title Date Number
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
Publication
Order
Number
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
Source of Method
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
EPA 515.1 Rev 4.0 In Methods for the Determination of December EPA/600/4-88-039 PB91-231480 National Technical Information Service (NTIS)
Organic Compounds in Drinking Water 1988,
Revised July
1991
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 8 of 21
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Contaminant
Method
Organization Number
Reference Title
Date
EPA Publication
Publication Order
Number Number Source of Method
Dalapon
EPA 515.3 Rev 1.0 In Methods for the Determination of August2000 EPA 815-R-00-014 PB2000-106981 http://www.epa.gov/safewater/methods/sourcalt.html
Organic and Inorganic Compounds in
Drinking Water, Volume 1
EPA
515.4 Rev 1.0 Determination of Chlorinated Acids in April 2000 EPA/815/B-00/001
Drinking Water by Liquid-Liquid
Microextraction, Derivatization, and
Fast Gas Chromatography with Electron
Capture Detection
http://www.epa.gov/safewater/methods/sourcalt.html
EPA 552.1 Rev 1.0 In Methods for the Determination of August 1992 EPA/600/R-92/129 PB92-207703 http://www.nemi.gov
Organic Compounds in Drinking Water
Supplement II
EPA 552.2 Rev 1.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA
552.3 Rev 1.0 Determination of Haloacetic Acids and July 2003 EPA-815-B-03-002
Dalapon in Drinking Water by Liquid-
Liquid Microextraction, Derivatization,
and Gas Chromatography with Electron
Capture Detection
http://www.epa.gov/safewater/methods/sourcalt.html
Di(2-ethylhexyl)adipate
EPA 506 Rev 1.1
EPA 525.2 Rev 2.0
Di(2-ethylhexyl)phthalate
EPA 506 Rev 1.1
EPA 525.2 Rev 2.0
In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 9 of 21
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Contaminant
Method
Organization Number Reference Title
EPA Publication
Publication Order
Date Number Number Source of Method
Dibromochloropropane (DBCP)
EPA 504.1 Rev 1.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 551.1 Rev 1.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Dichloromethane
EPA 502.2Rev2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 524.2Rev4.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in EPA Methods 515.1, 515.2, 515.3, 515.4, and 555.
Dinoseb
EPA 515.1 Rev 4.0 In Methods for the Determination of December EPA/600/4-88-039 PB91-231480 National Technical Information Service (NTIS)
Organic Compounds in Drinking Water 1988,
Revised July
1991
EPA 515.2 Rev 1.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 515.3 Rev 1.0 In Methods for the Determination of August2000 EPA 815-R-00-014 PB2000-106981 http://www.epa.gov/safewater/methods/sourcalt.html
Organic and Inorganic Compounds in
Drinking Water, Volume 1
EPA
515.4 Rev 1.0 Determination of Chlorinated Acids in April 2000 EPA/815/B-00/001
Drinking Water by Liquid-Liquid
Microextraction, Derivatization, and
Fast Gas Chromatography with Electron
Capture Detection
http://www.epa.gov/safewater/methods/sourcalt.html
EPA 555 Rev 1.0 In Methods for the Determination of August 1992 EPA/600/R-92/129 PB92-207703 http://www.nemi.gov
Organic Compounds in Drinking Water
Supplement II
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 10 of 21
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Contaminant
Method
Organization Number
Diquat
EPA 549.2 Rev 1.0
Endothall
EPA 548.1 Rev 1.0
Endrin
EPA 505 Rev 2.1
EPA 508 Rev 3.1
EPA 508.1 Rev 2.0
EPA 525.2 Rev 2.0
EPA 551.1 Rev 1.0
Ethylbenzene
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
Reference Title Date
In Methods for the Determination of August 2000
Organic and Inorganic Compounds in
Drinking Water, Volume 1
In Methods for the Determination of August 1 992
Organic Compounds in Drinking Water
Supplement II
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
EPA
Publication
Number
EPA 815-R-00-014
EPA/600/R-92/129
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
Publication
Order
Number Source of Method
PB2000- 106981 http://www.epa.gov/nerlcwww/ordmeth.htm
PB92-207703 http://www.nemi.gov
PB95-261616 http://www.nemi.gov
PB95-261616 http://www.nemi.gov
PB95-261616 http://www.nemi.gov
PB95-261616 http://www.nemi.gov
PB95-261616 http://www.nemi.gov
PB95-261616 http://www.nemi.gov
PB95-261616 http://www.nemi.gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 11 of 21
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Contaminant
Method
Organization Number
Ethylene dibromide (EDB)
EPA 504.1 Rev 1.1
EPA 551.1 Rev 1.0
Glyphosate
EPA 547
Standard 6651
Methods
Standard 6651
Methods
Standard 6651
Methods
Heptachlor
EPA 505 Rev 2.1
EPA 508 Rev 3.1
EPA 508.1 Rev 2.0
EPA 525.2 Rev 2.0
EPA 551.1 Rev 1.0
EPA
Publication
Reference Title Date Number
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of July 1 990 EPA/600/4-90/020
Organic Compounds in Drinking Water
Supplement I
Standard Methods for the Examination 1 992
of Water and Wastewater, 1 8th Edition
Standard Methods for the Examination 1995
of Water and Wastewater, 1 9th Edition
Standard Methods for the Examination 1998
of Water and Wastewater, 20th Edition
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1995 EPA/600/R-95-131
Organic Compounds in Drinking Water-
Supplement III
Publication
Order
Number
PB95-261616
PB95-261616
PB9 1-146027
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
Source of Method
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
Standard Methods
Standard Methods
Standard Methods
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
http://www.nemi.gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 12 of 21
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Contaminant
Organization
Method
Number
Reference Title
Heptachlor Epoxide
EPA
EPA
EPA
EPA
EPA
505 Rev 2.1
508 Rev 3.1
508.1 Rev 2.0
525.2 Rev 2.0
551.1 Rev 1.0
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
Hexachlorobenzene
EPA
EPA
EPA
EPA
EPA
505 Rev 2.1
508 Rev 3.1
508.1 Rev 2.0
525.2 Rev 2.0
551.1 Rev 1.0
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
Date
August
August
August
August
August
August
August
August
August
August
1995
1995
1995
1995
1995
1995
1995
1995
1995
1995
EPA
Publication
Number
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
Publication
Order
Number
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
Source of Method
http://www.nemi
http : //www. nemi
http : //www. nemi
http://www.nemi
http://www.nemi
http://www.nemi
http : //www. nemi
http : //www. nemi
http://www.nemi
http://www.nemi
gov
gov
gov
gov
gov
gov
gov
gov
gov
gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 13 of 21
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Contaminant
Organization
Method
Number
Reference Title
Hexachlorocyclopentadiene
EPA
EPA
EPA
EPA
EPA
Lindane
EPA
EPA
EPA
EPA
EPA
505 Rev 2.1
508 Rev 3.1
508.1 Rev 2.0
525.2 Rev 2.0
551.1 Rev 1.0
505 Rev 2.1
508 Rev 3.1
508.1 Rev 2.0
525.2 Rev 2.0
551.1 Rev 1.0
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of
Organic Compounds in Drinking Water-
Supplement III
Date
August
August
August
August
August
August
August
August
August
August
1995
1995
1995
1995
1995
1995
1995
1995
1995
1995
EPA
Publication
Number
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
Publication
Order
Number
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
Source of Method
http://www.nemi
http : //www. nemi
http : //www. nemi
http://www.nemi
http://www.nemi
http://www.nemi
http : //www. nemi
http : //www. nemi
http://www.nemi
http://www.nemi
gov
gov
gov
gov
gov
gov
gov
gov
gov
gov
Revised June 2008 Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations Page 14 of 21
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Contaminant
Method
Organization Number
Reference Title
Date
EPA
Publication
Number
Publication
Order
Number
Source of Method
Methoxychlor
EPA
505 Rev 2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
508 Rev 3.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
508.1 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
525.2 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
551.1 Rev 1.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
Oxamyl
EPA
531.1 Rev 3.1 In Methods for the Determination of Augustl995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
531.2 Rev 1.0 Measurement of N-Methyl- September
carbamoyloximes and N-Methyl- 2001
carbamates in Water by Direct Aqueous
Injection HPLC with Post Column
Derivatization
EPA 815/B/01/002
http://www.epa.gov/safewater/methods/sourcalt.html
Standard
Methods
6610 B
Standard Methods for the Examination 2005
of Water and Wastewater, 21 st Edition
Standard Methods
Standard 6610 B-04 Online version of Standard Methods for
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.
http: //www. standardmethods. org/
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 15 of 21
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Contaminant EPA Publication
Method Publication Order
Organization Number Reference Title Date Number Number Source of Method
i » I \ PCBs are qualitatively identified as Aroclors and measured for compliance purposes as decachlorobiphenyl. Users of Method 505 may have more
(as Aroclors; 1 difficulty ^ achieving the required detection limits than users of Methods 508.1, 525.2 or 508.
EPA 505 Rev 2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 508 Rev 3.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 508.1 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 525.2 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
i A ui H° h n PCBs are qualitatively identified as Aroclors and measured for compliance purposes as decachlorobiphenyl. Users of Method 505 may have more
(as aecacniorODlpnenylJ 1 difficulty ^ achieving the required detection limits than users of Methods 508.1, 525.2 or 508.
EPA SOSARevl.O In Methods for the Determination of December EPA/600/4-88-039 PB91-231480 http://www.nemi.gov
Organic Compounds in Drinking Water 1988,
Revised July
1991
Pentachlorophenol
ASTM D5317-93 Annual Book of ASTM Standards, Vol. ASTM International (ASTM)
International 11.02
ASTM D5317-98 Annual Book of ASTM Standards, Vol. http://www.astm.org
International (Reapproved 11.02
2003)
EPA 515.1 Rev 4.0 In Methods for the Determination of December EPA/600/4-88-039 PB91-231480 National Technical Information Service (NTIS)
Organic Compounds in Drinking Water 1988,
Revised July
1991
EPA 515.2Revl.l In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Revised June 2008 Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations Page 16 of 21
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Contaminant
Method
Organization Number Reference Title
EPA Publication
Publication Order
Date Number Number Source of Method
Pentachlorophenol
EPA 515.3 Rev 1.0 In Methods for the Determination of August2000 EPA 815-R-00-014 PB2000-106981 http://www.epa.gov/safewater/methods/sourcalt.html
Organic and Inorganic Compounds in
Drinking Water, Volume 1
EPA
Picloram
515.4 Rev 1.0 Determination of Chlorinated Acids in April 2000 EPA/815/B-00/001
Drinking Water by Liquid-Liquid
Microextraction, Derivatization, and
Fast Gas Chromatography with Electron
Capture Detection
http://www.epa.gov/safewater/methods/sourcalt.html
EPA 525.2 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 555 Rev 1.0 In Methods for the Determination of August 1992 EPA/600/R-92/129 PB92-207703 http://www.nemi.gov
Organic Compounds in Drinking Water
Supplement II
Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in EPA Methods 515.1, 515.2, 515.3, 515.4, and 555
and ASTM Methods D5317-93 and D5317-98 (Reapproved 2003).
ASTM D5317-93 Annual Book of ASTM Standards, Vol.
International 11.02
ASTM International (ASTM)
ASTM D5317-98 Annual Book of ASTM Standards, Vol.
International (Reapproved 11.02
2003)
http://www.astm.org
EPA 515.1 Rev 4.0 In Methods for the Determination of December EPA/600/4-88-039 PB91-231480 National Technical Information Service (NTIS)
Organic Compounds in Drinking Water 1988,
Revised July
1991
EPA 515.2 Rev 1.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
EPA 515.3 Rev 1.0 In Methods for the Determination of August2000 EPA 815-R-00-014 PB2000-106981 http://www.epa.gov/safewater/methods/sourcalt.html
Organic and Inorganic Compounds in
Drinking Water, Volume 1
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 17 of 21
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Contaminant
Method
Organization Number
Reference Title
Date
EPA
Publication
Number
Publication
Order
Number
Source of Method
Picloram
Accurate determination of the chlorinated esters requires hydrolysis of the sample as described in EPA Methods 515.1, 515.2, 515.3, 515.4, and 555
and ASTM Methods D5317-93 and D5317-98 (Reapproved 2003).
EPA
515.4 Rev 1.0 Determination of Chlorinated Acids in April 2000 EPA/815/B-00/001
Drinking Water by Liquid-Liquid
Microextraction, Derivatization, and
Fast Gas Chromatography with Electron
Capture Detection
http://www.epa.gov/safewater/methods/sourcalt.html
EPA
555 Rev 1.0 In Methods for the Determination of August 1992
Organic Compounds in Drinking Water
Supplement II
EPA/600/R-92/129 PB92-207703
http://www.nemi.gov
Simazine
EPA 505 Rev 2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
EPA 507 Rev 2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
EPA 508.1 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616 http://www.nemi.gov
Organic Compounds in Drinking Water-
Supplement III
Substitution of the detector specified in Method 505, 507, or 508.1 for the purpose of achieving lower detection limits is allowed as follows. Either
an electron capture or nitrogen phosphorous detector may be used provided all regulatory requirements and quality control criteria are met.
EPA
525.2 Rev 2.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
551.1 Rev 1.0 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 18 of 21
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Contaminant
Method
Organization Number
Styrene
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
Tetrachloroethylene
EPA 502. 2 Rev 2.1
EPA 524. 2 Rev 4.1
EPA 551.1 Rev 1.0
Toluene
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
Toxaphene
EPA 505 Rev 2.1
EPA 508 Rev 3.1
Reference Title Date
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
EPA
Publication
Number
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
Publication
Order
Number
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
Source of Method
http://www.nemi
http : //www. nemi
http : //www. nemi
http : //www. nemi
http : //www. nemi
http://www.nemi
http://www.nemi
http://www.nemi
http : //www. nemi
gov
gov
gov
gov
gov
gov
gov
gov
gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 19 of 21
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Contaminant
Method
Organization Number
Toxaphene
EPA 508.1 Rev 2.0
EPA 525.2 Rev 2.0
trans-Dichloroethylene
EPA 502. 2 Rev 2.1
EPA 524. 2 Rev 4.1
Trichloroethylene
EPA 502. 2 Rev 2.1
EPA 524. 2 Rev 4.1
EPA 551.1 Rev 1.0
Vinyl chloride
EPA 502.2 Rev 2.1
EPA 524. 2 Rev 4.1
Reference Title Date
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
In Methods for the Determination of August 1 995
Organic Compounds in Drinking Water-
Supplement III
EPA
Publication
Number
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
EPA/600/R-95-131
Publication
Order
Number
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
PB95-261616
Source of Method
http://www.nemi
http : //www. nemi
http : //www. nemi
http : //www. nemi
http : //www. nemi
http://www.nemi
http://www.nemi
http://www.nemi
http : //www. nemi
gov
gov
gov
gov
gov
gov
gov
gov
gov
Revised June 2008
Approved Methods for Organic Contaminants - National Primary Drinking Water Regulations
Page 20 of 21
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Contaminant
Method
Organization Number
Reference Title
Date
EPA
Publication
Number
Publication
Order
Number
Source of Method
Xylenes (total)
EPA
502.2Rev2.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
EPA
524.2Rev4.1 In Methods for the Determination of August 1995 EPA/600/R-95-131 PB95-261616
Organic Compounds in Drinking Water-
Supplement III
http://www.nemi.gov
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 Organic Contaminants - National Primary Drinking Water Regulations
Page 21 of 21
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