Analytical Methods Approved for Drinking Water Compliance
Monitoring of Radionuclides

Analysis for the following contaminants shall be conducted in accordance with the methods in the following table, or their equivalent as
determined by EPA. The methods for these contaminants are specified in 40 CFR 141.25. Additional methods are listed in Appendix A to
Subpart C of Part 141. Monitoring requirements for these contaminants are specified in 40 CFR 141.26.

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.

Naturally Occurring Radionuclides:

Gross Alpha

Natural uranium and thorium-230 are approved as gross alpha calibration standards for gross alpha with co-precipitation and evaporation methods; americium-
241 is approved with co-precipitation methods.

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

EPA 00-02

EPA

In Radiochemistry Procedures
Manual: Radiochemical
Determination of Gross Alpha
Particle Activity in Drinking Water
by Co-precipitation

June 1984

EPA 520/5-84-006

EPA 520/5-84-006

7110 C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7110 C

Standard
Methods

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

1995



Standard Methods

7110 C

Standard
Methods

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

1998



Standard Methods

7110 C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7110 C

Standard
Methods

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

2012



Standard Methods

oEPA

United States
Environmental Protection
Agency

Office of Water (MS - 4606 M)

EPA 815-B-24-004

January 2024


-------
Page 2 of 28

7110 C

Standard
Methods

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

2017



Standard Methods

7110 C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7110 C-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

Gross Alpha and Beta

Natural uranium and thorium-230 are approved as gross alpha calibration standards for gross alpha with co-precipitation and evaporation methods; americium-
241 is approved with co-precipitation methods.

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

D7283-17

ASTM
International

Alpha and Beta Activity in Water
by Liquid Scintillation Counting

2017



ASTM International

EPA 00-01

EPA

In Radiochemistry Procedures
Manual: Radiochemical
Determination of Gross Alpha and
Gross Beta Particle Activity in
Water

June 1984

EPA 520/5-84-006

EPA 520/5-84-006

EPA 900.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Gross Alpha and
Gross Beta Radioactivity

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA 900.0,

EPA

Gross Alpha and Gross Beta

February

EPA 815-B-18-002

EPA 815-B-18-002

Rev. 1.0



Radioactivity in Drinking Water

2017





Page 1 in

EPA

In Radiochemical Analytical

March 1979

EMSLLV053917

EMSL LV 053917

EMSL LV



Procedures for Analysis of







053917



Environmental Samples:
Determination of Gross Alpha and
Beta in Water







Page 1 in

EPA

In Interim Radiochemical

Revised

EPA 600/4-75-008

600/4-75-008

EPA 600/4-



Methodology for Drinking Water:

March 1976





75-008



Gross Alpha and Beta Radioactivity
in Drinking Water








-------
Page 3 of 28

302

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 13th Edition

1971



Standard Methods

7110 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7110 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7110 B

Standard
Methods

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

1995



Standard Methods

7110 B

Standard
Methods

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

1998



Standard Methods

7110 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7110 B

Standard
Methods

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

2012



Standard Methods

7110 B

Standard
Methods

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

2017



Standard Methods

7110 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7110 D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7110 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

7110 D-17

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

2017



Standard Methods


-------
Page 4 of 28





Subpart C of Part 141 are
approved.







R-1120-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

Radium-226

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

D2460-97

ASTM
International

Standard Test Method for Alpha-
Particle-Emitting Isotopes of
Radium in Water

1997



ASTM International

D2460-07

ASTM
International

Standard Test Method for Alpha-
Particle-Emitting Isotopes of
Radium in Water

2007



ASTM International

D3454-97

ASTM
International

Standard Test Method for Radium-
226 in Water

1997



ASTM International

D3454-05

ASTM
International

Standard Test Method for Radium-
226 in Water

2005



ASTM International

D3454-18

ASTM
International

Standard Test Method for Radium-
226 in Water

2018



ASTM International

D3454-21

ASTM
International

Standard Test Method for Radium-
226 in Water

2021



ASTM International

Ra-04

Dept. of
Homeland
Security

In EML Procedures Manual, 28th
Edition, Vol. 1, Department of
Energy Report, HASL-300

1997



HASL-300

Ra-05 (Ra-
04 see
Note)

Dept. of
Homeland
Security

In EML Procedures Manual, 27th
Edition, Vol. 1, Department of
Energy Report, HASL-300-ED.27-
Vol. 1

Note: See footnote 8 in the table
at 40 CFR 141.25(a)(25); in the
27th Edition 'Ra-04' is listed as 'Ra-
05'

1990



HASL-300-Ed. 27

EPA 903.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in

August 1980

EPA 600/4/80-032

EPA 600/4/80-032


-------
Page 5 of 28





Drinking Water: Alpha-Emitting
Radium Isotopes







EPA 903.0,
Rev. 1.0

EPA

Alpha-Emitting Radium Isotopes in
Drinking Water

January 2021

EPA 815-B-21-002

EPA 815-B-21-002

EPA 903.1

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Radium-226 -
Radon Emanation Technique

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA 903.1,
Rev. 1.0

EPA

Radium-226 in Drinking Water-
Radon Emanation Technique

January 2021

EPA 815-B-21-003

EPA-815-B-21-003

EPA Ra-03

EPA

In Radiochemistry Procedures
Manual: Radiochemical
Determination of Radium-226 in
Water Samples

June 1984

EPA 520/5-84-006

EPA 520/5-84-006

EPA Ra-04

EPA

In Radiochemistry Procedures
Manual: Radiochemical
Determination of Radium-226, De-
emanation Procedure

June 1984

EPA 520/5-84-006

EPA 520/5-84-006

Page 13 in
EPA 600/4-
75-008

EPA

In Interim Radiochemical
Methodology for Drinking Water:
Radium-226 in Drinking Water-
Alpha-Emitting Radium Isotopes -
Precipitation Method

Revised
March 1976

EPA 600/4-75-008

600/4-75-008

Page 16 in
EPA 600/4-
75-008

EPA

In Interim Radiochemical
Methodology for Drinking Water:
Radium-226 in Drinking Water-
Radon Emanation Technique

Revised
March 1976

EPA 600/4-75-008

600/4-75-008

Page 19 in
EMSL LV
053917

EPA

In Radiochemical Analytical
Procedures for Analysis of
Environmental Samples:
Determination of Radium-226 and
Radium-228 in Water, Soil, Air and
Biological Tissue

March 1979

EMSLLV053917

EMSL LV 053917

GA

Georgia
Institute of
Technology

The Determination of Radium-226
and Radium-228 in Drinking Water
by Gamma-ray Spectrometry using
HPGE or Ge(Li) Detectors, Revision
1.2

December
2004



GA

NY

NY Dept. of
Health

Determination ofRa-226 and Ra-
228 (Ra-02)

January 1980,
Revised June
1982



Radiological Sciences Institute for
Laboratories and Research, NY State
Department of Health, Albany, NY


-------
Page 6 of 28

304

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 13th Edition

1971



Standard Methods

305

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 13th Edition

1971



Standard Methods

7500-Ra B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-Ra B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-Ra B

Standard
Methods

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

1995



Standard Methods

7500-Ra B

Standard
Methods

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

1998



Standard Methods

7500-Ra B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-Ra B

Standard
Methods

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

2012



Standard Methods

7500-Ra B

Standard
Methods

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

2017



Standard Methods

7500-Ra B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-Ra C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-Ra C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-Ra C

Standard
Methods

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

1995



Standard Methods


-------
Page 7 of 28

7500-Ra C

Standard
Methods

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

1998



Standard Methods

7500-Ra C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-Ra C

Standard
Methods

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

2012



Standard Methods

7500-Ra C

Standard
Methods

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

2017



Standard Methods

7500-Ra C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-Ra E

Standard
Methods

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

2012



Standard Methods

7500-Ra E

Standard
Methods

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

2017



Standard Methods

7500-Ra E

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-Ra B-

Standard

Online version. Approval year is

2001



Standard Methods

01

Methods Online

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.







7500-Ra C-

Standard

Online version. Approval year is

2001



Standard Methods

01

Methods Online

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.







7500-Ra E-

Standard

Online version. Approval year is

2007



Standard Methods

07

Methods Online

designated by the last 2 digits.
Only online versions cited in the
regulations or in Appendix A to








-------
Page 8 of 28





Subpart C of Part 141 are
approved.







R-1140-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

R-1141-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

Radium-228

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

EPA 904.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Radium-228

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA 904.0,
Rev. 1.0

EPA

Radium-228 in Drinking Water

March 2022

EPA 815-B-22-003

EPA 815-B-22-003

EPA Ra-05

EPA

In Radiochemistry Procedures
Manual: Radiochemical
Determination of Radium-228 in
Water Samples

June 1984

EPA 520/5-84-006

EPA 520/5-84-006

Page 19 in
EMSL LV
053917

EPA

In Radiochemical Analytical
Procedures for Analysis of
Environmental Samples:
Determination of Radium-226 and
Radium-228 in Water, Soil, Air and
Biological Tissue

March 1979

EMSLLV053917

EMSL LV 053917

Page 24 in
EPA 600/4-
75-008

EPA

In Interim Radiochemical
Methodology for Drinking Water:
Radium-228 in Drinking Water-
Sequential Method Radium-
228/Radium-226

Revised
March 1976

EPA 600/4-75-008

600/4-75-008


-------
Page 9 of 28

GA

Georgia
Institute of
Technology

The Determination of Radium-226
and Radium-228 in Drinking Water
by Gamma-ray Spectrometry using
HPGE or Ge(Li) Detectors, Revision
1.2

December
2004



GA

NJ

NJ Dept. of
Environmental
Protection

Determination of Ra-228 in
Drinking Water

August 1980



State of New Jersey, Department of
Environmental Protection, Trenton, NJ

NY

NY Dept. of
Health

Determination ofRa-226 and Ra-
228 (Ra-02)

January 1980,
Revised June
1982



Radiological Sciences Institute for
Laboratories and Research, NY State
Department of Health, Albany, NY

7500-Ra D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-Ra D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-Ra D

Standard
Methods

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

1995



Standard Methods

7500-Ra D

Standard
Methods

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

1998



Standard Methods

7500-Ra D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-Ra D

Standard
Methods

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

2012



Standard Methods

7500-Ra D

Standard
Methods

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

2017



Standard Methods

7500-Ra D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-Ra E

Standard
Methods

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

2012



Standard Methods

7500-Ra E

Standard
Methods

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

2017



Standard Methods


-------
Page 10 of 28

7500-Ra E

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-Ra D-
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

7500-Ra E-
07

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.

2007



Standard Methods

R-1142-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

Uranium

If uranium (U) is determined by mass, a 0.67 pCi/ng conversion factor must be used. This conversion factor is based on 1:1 activity ratio of U-234 and U-238,
characteristic of naturally occurring uranium.

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

D2907-97

ASTM
International

Standard Test Methods for
Microquantities of Uranium in
Water by Fluorometry

1997



ASTM International

D3972-97

ASTM
International

Standard Test Method for Isotopic
Uranium in Water by
Radiochemistry

1997



ASTM International

D3972-02

ASTM
International

Standard Test Method for Isotopic
Uranium in Water by
Radiochemistry

2002



ASTM International

D3972-09

ASTM
International

Standard Test Method for Isotopic
Uranium in Water by
Radiochemistry

2009



ASTM International


-------
Page 11 of 28

D5174-97

ASTM
International

Standard Test Method for Trace
Uranium by Pulsed Laser
Phosphorimetry

1997



ASTM International

D5174-02

ASTM
International

Standard Test Method for Trace
Uranium by Pulsed Laser
Phosphorimetry

2002



ASTM International

D5174-07

ASTM
International

Standard Test Method for Trace
Uranium by Pulsed Laser
Phosphorimetry

2007



ASTM International

D5673-03

ASTM
International

Standard Test Method for
Elements in Water by Inductively
Coupled Plasma-Mass
Spectrometry

2003



ASTM International

D5673-05

ASTM
International

Standard Test Method for
Elements in Water by Inductively
Coupled Plasma-Mass
Spectrometry

2005



ASTM International

D5673-10

ASTM
International

Standard Test Method for
Elements in Water by Inductively
Coupled Plasma-Mass
Spectrometry

2010



ASTM International

D5673-16

ASTM
International

Standard Test Method for
Elements in Water by Inductively
Coupled Plasma-Mass
Spectrometry

2016



ASTM International

D6239-09

ASTM
International

Standard Test Method for Uranium
in Drinking Water by High-
Resolution Alpha-Liquid
Scintillation Spectrometry

2009



ASTM International

U-02

Dept. of
Homeland
Security

In EML Procedures Manual, 27th
Edition, Vol. 1, Department of
Energy Report, HASL-300-ED.27-
Vol. 1

1990



HASL-300-Ed. 27

U-02

Dept. of
Homeland
Security

In EML Procedures Manual, 28th
Edition, Vol. 1, Department of
Energy Report, HASL-300

1997



HASL-300

U-04

Dept. of
Homeland
Security

In EML Procedures Manual, 27th
Edition, Vol. 1, Department of
Energy Report, HASL-300-ED.27-
Vol. 1

1990



HASL-300-Ed. 27


-------
Page 12 of 28

U-04

Dept. of
Homeland
Security

In EML Procedures Manual, 28th
Edition, Vol. 1, Department of
Energy Report, HASL-300

1997



HASL-300

200.8, Rev.
5.4

EPA

In Methods for the Determination
of Metals in Environmental
Samples, Supplement 1

May 1994

EPA/600/R-94/111

National Environmental Methods Index

EPA 00-07

EPA

In Radiochemistry Procedures
Manual: Radiochemical
Determination of Thorium and
Uranium in Water

June 1984

EPA 520/5-84-006

EPA 520/5-84-006

EPA 908.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Uranium -
Radiochemical Method

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA 908.1

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Uranium -
Fluorometric Method

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

Page 33 in
EMSL LV
053917

EPA

In Radiochemical Analytical
Procedures for Analysis of
Environmental Samples: Isotopic
Determination of Plutonium,
Uranium, and Thorium in Water,
Soil, Air and Biological Tissue

March 1979

EMSLLV053917

EMSL LV 053917

3125

Standard
Methods

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

1998



Standard Methods

3125

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-U B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-U B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-U B

Standard
Methods

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

1995



Standard Methods


-------
Page 13 of 28

7500-U B

Standard
Methods

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

1998



Standard Methods

7500-U B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-U B

Standard
Methods

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

2012



Standard Methods

7500-U B

Standard
Methods

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

2017



Standard Methods

7500-U B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-U C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-U C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-U C

Standard
Methods

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

1995



Standard Methods

7500-U C

Standard
Methods

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

1998



Standard Methods

7500-U C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-U C

Standard
Methods

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

2012



Standard Methods

7500-U C

Standard
Methods

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

2017



Standard Methods

7500-U C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-U B-00

Standard
Methods Online

Online version. Approval year is
designated by the last 2 digits.

2000



Standard Methods


-------
Page 14 of 28





Only online versions cited in the
regulations or in Appendix A to
Subpart C of Part 141 are
approved.







7500-U C-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

R-1180-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

R-1181-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

R-1182-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

Man-made Radionuclides:

Gamma Emitters

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

D3649-91

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

1991



ASTM International


-------
Page 15 of 28

D3649-98a

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

1998



ASTM International

D3649-06

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

2006



ASTM International

D4785-93

ASTM
International

Standard Test Method for Low-
Level Analysis of Iodine
Radioisotopes in Water

1993



ASTM International

D4785-00a

ASTM
International

Standard Test Method for Low-
Level Analysis of Iodine
Radioisotopes in Water

2000



ASTM International

D4785-08

ASTM
International

Standard Test Method for Low-
Level Analysis of Iodine
Radioisotopes in Water

2008



ASTM International

D4785-20

ASTM
International

Standard Test Method for Low-
Level Analysis of Iodine
Radioisotopes in Water

2020



ASTM International

Ga-01-R

Dept. of
Homeland
Security

In EML Procedures Manual, 28th
Edition, Vol. 1, Department of
Energy Report, HASL-300

1997



HASL-300

EPA 901.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Radioactive
Cesium

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA 901.1

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Gamma Emitting
Radionuclides

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA 902.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Radioactive Iodine

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

Page 92 in

EPA

In Radiochemical Analytical

March 1979

EMSLLV053917

EMSL LV 053917

EMSL LV



Procedures for Analysis of







053917



Environmental Samples: Isotopic
Analysis by Gamma Ray Spectra
using Lithium-Drifted Germanium
Detectors







7120

Standard
Methods

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

1995



Standard Methods


-------
Page 16 of 28

7120

Standard
Methods

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

1998



Standard Methods

7120

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7120

Standard
Methods

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

2012



Standard Methods

7120

Standard
Methods

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

2017



Standard Methods

7120

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-Cs B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-Cs B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-Cs B

Standard
Methods

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

1995



Standard Methods

7500-Cs B

Standard
Methods

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

1998



Standard Methods

7500-Cs B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-Cs B

Standard
Methods

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

2012



Standard Methods

7500-Cs B

Standard
Methods

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

2017



Standard Methods

7500-Cs B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods


-------
Page 17 of 28

7500-1 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-1 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-1 B

Standard
Methods

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

1995



Standard Methods

7500-1 B

Standard
Methods

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

1998



Standard Methods

7500-1 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-1 B

Standard
Methods

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

2012



Standard Methods

7500-1 B

Standard
Methods

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

2017



Standard Methods

7500-1 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7120-97

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.

1997



Standard Methods

7500-Cs B-

Standard

Online version. Approval year is

2000



Standard Methods

00

Methods Online

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.







7500-1 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

2000



Standard Methods


-------
Page 18 of 28





Subpart C of Part 141 are
approved.







R-1110-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

Radioactive Cesium

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

D2459-72

ASTM
International

Standard Test Method for Gamma
Spectrometry of Water

1972



ASTM International

D3649-91

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

1991



ASTM International

D3649-98a

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

1998



ASTM International

D3649-06

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

2006



ASTM International

4.5.2.3

Dept. of
Homeland
Security

In EML Procedures Manual, 27th
Edition, Vol. 1, Department of
Energy Report, HASL-300-ED.27-
Vol. 1

1990



HASL-300-Ed. 27

EPA 901.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Radioactive
Cesium

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA 901.1

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Gamma Emitting
Radionuclides

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

Page 4 in
EPA 600/4-
75-008

EPA

In Interim Radiochemical
Methodology for Drinking Water:
Radioactive Cesium in Drinking
Water

Revised
March 1976

EPA 600/4-75-008

600/4-75-008


-------
Page 19 of 28

Page 92 in
EMSL LV
053917

EPA

In Radiochemical Analytical
Procedures for Analysis of
Environmental Samples: Isotopic
Analysis by Gamma Ray Spectra
using Lithium-Drifted Germanium
Detectors

March 1979

EMSLLV053917

EMSL LV 053917

7120

Standard
Methods

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

1995



Standard Methods

7120

Standard
Methods

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

1998



Standard Methods

7120

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7120

Standard
Methods

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

2012



Standard Methods

7120

Standard
Methods

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

2017



Standard Methods

7120

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-Cs B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-Cs B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-Cs B

Standard
Methods

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

1995



Standard Methods

7500-Cs B

Standard
Methods

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

1998



Standard Methods

7500-Cs B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods


-------
Page 20 of 28

7500-Cs B

Standard
Methods

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

2012



Standard Methods

7500-Cs B

Standard
Methods

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

2017



Standard Methods

7500-Cs B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7120-97

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.

1997



Standard Methods

7500-Cs 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

R-1110-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

R-llll-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS

Radioactive Iodine

Method

Organization

Reference Title

Date

EPA Publication

Source of Method









Number




-------
Page 21 of 28

D3649-91

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

1991



ASTM International

D3649-98a

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

1998



ASTM International

D3649-06

ASTM
International

Standard Practice for High
Resolution Gamma-Ray
Spectrometry of Water

2006



ASTM International

D4785-93

ASTM
International

Standard Test Method for Low-
Level Analysis of Iodine
Radioisotopes in Water

1993



ASTM International

D4785-00a

ASTM
International

Standard Test Method for Low-
Level Analysis of Iodine
Radioisotopes in Water

2000



ASTM International

D4785-08

ASTM
International

Standard Test Method for Low-
Level Analysis of Iodine
Radioisotopes in Water

2008



ASTM International

D4785-20

ASTM
International

Standard Test Method for Low-
Level Analysis of Iodine
Radioisotopes in Water

2020



ASTM International

4.5.2.3

Dept. of
Homeland
Security

In EML Procedures Manual, 27th
Edition, Vol. 1, Department of
Energy Report, HASL-300-ED.27-
Vol. 1

1990



HASL-300-Ed. 27

EPA 901.1

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Gamma Emitting
Radionuclides

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA 902.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Radioactive Iodine

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

Page 6 in
EPA 600/4-
75-008

EPA

In Interim Radiochemical
Methodology for Drinking Water:
Radioactive Iodine in Drinking
Water - Precipitation Method

Revised
March 1976

EPA 600/4-75-008

600/4-75-008

Page 9 in
EPA 600/4-
75-008

EPA

In Interim Radiochemical
Methodology for Drinking Water:
Radioactive Iodine in Drinking
Water - Distillation Method

Revised
March 1976

EPA 600/4-75-008

600/4-75-008


-------
Page 22 of 28

Page 92 in
EMSL LV
053917

EPA

In Radiochemical Analytical
Procedures for Analysis of
Environmental Samples: Isotopic
Analysis by Gamma Ray Spectra
using Lithium-Drifted Germanium
Detectors

March 1979

EMSLLV053917

EMSL LV 053917

7120

Standard
Methods

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

1995



Standard Methods

7120

Standard
Methods

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

1998



Standard Methods

7120

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7120

Standard
Methods

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

2012



Standard Methods

7120

Standard
Methods

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

2017



Standard Methods

7120

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-1 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-1 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-1 B

Standard
Methods

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

1995



Standard Methods

7500-1 B

Standard
Methods

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

1998



Standard Methods

7500-1 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods


-------
Page 23 of 28

7500-1 B

Standard
Methods

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

2012



Standard Methods

7500-1 B

Standard
Methods

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

2017



Standard Methods

7500-1 B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-1 C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-1 C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-1 C

Standard
Methods

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

1995



Standard Methods

7500-1 C

Standard
Methods

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

1998



Standard Methods

7500-1 C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-1 C

Standard
Methods

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

2012



Standard Methods

7500-1 C

Standard
Methods

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

2017



Standard Methods

7500-1 C

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-1 D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-1 D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods


-------
Page 24 of 28

7500-1 D

Standard
Methods

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

1995



Standard Methods

7500-1 D

Standard
Methods

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

1998



Standard Methods

7500-1 D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-1 D

Standard
Methods

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

2012



Standard Methods

7500-1 D

Standard
Methods

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

2017



Standard Methods

7500-1 D

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7120-97

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.

1997



Standard Methods

7500-1 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

7500-1 C-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

7500-1 D-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

2000



Standard Methods


-------
Page 25 of 28





Subpart C of Part 141 are
approved.







Radioactive Strontium 89 and 90

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

Sr-01

Dept. of
Homeland
Security

In EML Procedures Manual, 27th
Edition, Vol. 1, Department of
Energy Report, HASL-300-ED.27-
Vol. 1

1990



HASL-300-Ed. 27

Sr-01

Dept. of
Homeland
Security

In EML Procedures Manual, 28th
Edition, Vol. 1, Department of
Energy Report, HASL-300

1997



HASL-300

Sr-02

Dept. of
Homeland
Security

In EML Procedures Manual, 27th
Edition, Vol. 1, Department of
Energy Report, HASL-300-ED.27-
Vol. 1

1990



HASL-300-Ed. 27

Sr-02

Dept. of
Homeland
Security

In EML Procedures Manual, 28th
Edition, Vol. 1, Department of
Energy Report, HASL-300

1997



HASL-300

EPA 905.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Radioactive
Strontium

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA Sr-04

EPA

In Radiochemistry Procedures
Manual: Radiochemical
Determination of Radiostrontium
in Water, Sea Water, and other
Aqueous Media

June 1984

EPA 520/5-84-006

EPA 520/5-84-006

Page 29 in

EPA

In Interim Radiochemical

Revised

EPA 600/4-75-008

600/4-75-008

EPA 600/4-



Methodology for Drinking Water:

March 1976





75-008



Radioactive Strontium in Drinking
Water







Page 65 in

EPA

In Radiochemical Analytical

March 1979

EMSLLV053917

EMSL LV 053917

EMSL LV



Procedures for Analysis of







053917



Environmental Samples:
Determination of Strontium-89
and Strontium-90 in Water,
Vegetation, Soil, and Biological
Tissue








-------
Page 26 of 28

303

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 13th Edition

1971



Standard Methods

7500-Sr B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-Sr B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-Sr B

Standard
Methods

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

1995



Standard Methods

7500-Sr B

Standard
Methods

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

1998



Standard Methods

7500-Sr B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-Sr B

Standard
Methods

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

2012



Standard Methods

7500-Sr B

Standard
Methods

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

2017



Standard Methods

7500-Sr B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-Sr B-

Standard

Online version. Approval year is

2001



Standard Methods

01

Methods Online

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.







R-1160-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS


-------
Page 27 of 28

Tritium

Method

Organization

Reference Title

Date

EPA Publication
Number

Source of Method

D4107-91

ASTM
International

Standard Test Method for Tritium
in Drinking Water

1991



ASTM International

D4107-98

ASTM
International

Standard Test Method for Tritium
in Drinking Water

1998



ASTM International

D4107-08

ASTM
International

Standard Test Method for Tritium
in Drinking Water

2008



ASTM International

D4107-20

ASTM
International

Standard Test Method for Tritium
in Drinking Water

2020



ASTM International

EPA 906.0

EPA

In Prescribed Procedures for
Measurement of Radioactivity in
Drinking Water: Tritium

August 1980

EPA 600/4/80-032

EPA 600/4/80-032

EPA H-02

EPA

In Radiochemistry Procedures
Manual: Radiochemical
Determination of Tritium in Water:
Dioxane Method

June 1984

EPA 520/5-84-006

EPA 520/5-84-006

Page 34 in

EPA

In Interim Radiochemical

Revised

EPA 600/4-75-008

600/4-75-008

EPA 600/4-



Methodology for Drinking Water:

March 1976





75-008



Tritium in Drinking Water







Page 87 in

EPA

In Radiochemical Analytical

March 1979

EMSLLV053917

EMSL LV 053917

EMSL LV



Procedures for Analysis of







053917



Environmental Samples:
Determination of Tritium in Water
and Biological Tissue (Direct
Method)







306

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 13th Edition

1971



Standard Methods

7500-3H B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 17th Edition

1989



Standard Methods

7500-3H B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 18th Edition

1992



Standard Methods

7500-3H B

Standard
Methods

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

1995



Standard Methods


-------
Page 28 of 28

7500-3H B

Standard
Methods

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

1998



Standard Methods

7500-3H B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 21st Edition

2005



Standard Methods

7500-3H B

Standard
Methods

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

2012



Standard Methods

7500-3H B

Standard
Methods

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

2017



Standard Methods

7500-3H B

Standard
Methods

Standard Methods for the
Examination of Water and
Wastewater, 24th Edition

2023



Standard Methods

7500-3H 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

R-1171-76

U.S. Geological
Survey

In Methods for the Determination
of Radioactive Substances in
Water and Fluvial Sediments,

USGS Series: Techniques of Water-
Resource Investigation. Report
Number: 05-A5; by Thatcher, L.L.,
Janzer, V.J., and Edwards, K.W.

1977



USGS


-------