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  1. Home
  2. Clean Water Act Analytical Methods

Approved CWA Test Methods for Pesticide Active Ingredients

Related Information
  • Approved Drinking Water Methods for Pesticide Active Ingredients (500-series methods)

The methods were promulgated under Clean Water Act Section 304(h) and incorporated by reference at 40 CFR 136.3, Table I-G—List of Approved Methods for Pesticide Pollutants. The methods are approved for use with the Pesticide Chemicals Effluent Guidelines, 40 CFR Part 455.


  • 200.7: Trace Elements in Water, Solids, and Biosolids by Inductively Coupled Plasma-Atomic Emission Spectrometry; Rev. 5.0 (pdf) (224.24 KB, January 2001, 821-R-01-010)
  • 200.9: Determination of Trace Elements by Stabilized Temperature Graphic Furnace Atomic Absorption; Rev. 2.2 (pdf) (286.97 KB, 1994)
  • 608: Organochlorine Pesticides and PCBs (pdf) (388.02 KB, Promulgated 1984)
  • 608.1: Organochlorine Pesticides in Municipal and Industrial Wastewater (pdf) (182.21 KB, 1993)
  • 608.2: Certain Organochlorine Pesticides in Municipal and Industrial Wastewater (pdf) (183.54 KB, 1993)
  • 614: Organophosphorus Pesticides in Municipal and Industrial Wastewater (pdf) (171.48 KB, 1992)
  • 614.1: Organophosphorus Pesticides in Municipal and Industrial Wastewater (pdf) (175.44 KB, 1992)
  • 615: Chlorinated Herbicides in Municipal and Industrial Wastewater (pdf) (274.01 KB, 1992)
  • 617: Organohalide Pesticides and PCBs in Municipal and Industrial Wastewater (pdf) (306.9 KB, 1992)
  • 619: Triazine Pesticides in Municipal and Industrial Wastewater (pdf) (349.3 KB, 1992)
  • 622: Organophosphorus Pesticides in Municipal and Industrial Wastewater (pdf) (321.93 KB, 1992)
  • 622.1: Thiophosphate Pesticides in Municipal and Industrial Wastewater (pdf) (205.34 KB, 1992)
  • 625: Base/Neutrals and Acids (pdf) (473 KB, Promulgated 1984)
  • 627: Dinitroaniline Pesticides in Municipal and Industrial Wastewater (pdf) (298.75 KB, August 1993)
  • 629: Cyanazine in Municipal and Industrial Wastewater (pdf) (179.29 KB, August 1993)
  • 630: Dithiocarbamate Pesticides in Municipal and Industrial Wastewater (pdf) (148.03 KB, August 1993)
  • 630.1: Dithiocarbamates Pesticides in Municipal and Industrial Wastewater (pdf) (247.38 KB, August 1993)
  • 631: Benomyl and Carbendazim in Municipal and Industrial Wastewater (pdf) (173.03 KB, August 1993)
  • 632: Carbamate and Urea Pesticides in Municipal and Industrial Wastewater (pdf) (285.05 KB, 1992)
  • 632.1: Carbamate and Amide Pesticides in Municipal and Industrial Wastewater (pdf) (162.75 KB, August 1993)
  • 633: Organonitrogen Pesticides in Municipal and Industrial Wastewater (pdf) (291.22 KB, August 1993)
  • 633.1: Neutral Nitrogen-Containing Pesticides in Municipal and Industrial Wastewaters (pdf) (188.28 KB, August 1993)
  • 637: MBTS and TCMTB in Municipal and Industrial Wastewaters (pdf) (182.99 KB, August 1993)
  • 645: Certain Amine Pesticides and Lethane in Municipal and Industrial Wastewater (pdf) (188.72 KB, August 1993)
  • 1625B: Semivolatile Organic Compounds by Isotope Dilution GC/MS (pdf) (446.43 KB, Promulgated 1984)
  • 1625C: Semivolatile Organic Compounds by Isotope Dilution GCMS (pdf) (794.85 KB, June 1989)
  • 1656: Organo-Halide Pesticides in Municipal and Industrial Wastewater (pdf) (1.68 MB, August 1993)
  • 1657: Organo-Phosphorus Pesticides in Municipal and Industrial Wastewater (pdf) (334.58 KB, August 1993)
  • 1658: Phenoxy-Acid Herbicides in Municipal and Industrial Wastewater (pdf) (297.24 KB, August 1993)
  • 1659: Dazomet in Municipal and Industrial Wastewater (pdf) (162.07 KB, August 1993)
  • 1660: Pyrethrins and Pyrethroids in Municipal and Industrial Wastewater (pdf) (163.06 KB, August 1993)
  • 1661: Bromoxynil in Municipal and Industrial Wastewater (pdf) (167.39 KB, August 1993)

Clean Water Act Analytical Methods

  • PFAS Methods
  • Methods Update Rules
  • Approved Chemical Methods
    • Inorganic Non‑Metals
    • Metals
    • Organic
  • Approved Microbiological Methods
    • Wastewater & Sewage Sludge
    • Ambient Water
  • Approved WET Methods
    • Acute
    • Chronic - Freshwater
    • Chronic - Marine/Estuarine
  • Approved Radiochemical Methods
  • Approved Industry-Specific Methods
  • Other CWA Methods: Chemical
  • Other CWA Methods: Microbiological
  • Other CWA Methods: Biosolids
  • Alternate Test Procedures
  • Regulatory History
Contact Us about CWA Analytical Methods
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on January 2, 2025
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