Approved CWA Test Methods: Organic Compounds | Clean Water Act Analytical Methods

Methods approved under Clean Water Act section 304(h) and published at 40 CFR Part 136.

Note: The drinking water method 525.1 is approved for Clean Water Act use, but it is not approved for Safe Drinking Water Act compliance monitoring.

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420.1: Phenolics (Spectrophotometric, Manual 4AAP With Distillation) (PDF)(5 pp, 92 K, 1978)
420.4: Determination of Total Recoverable Phenolics by Semi-Automated Colorimetry; Rev. 1.0 (PDF)(15 pp, 196 K, August 1993)
525.1: Determination of Organic Compounds in Drinking Water by Liquid-Solid Extraction and Capillary Column Gas Chromatography/Mass Spectrometry; Rev 2.2 (PDF)(42 pp, 789 K, May 1991)
525.2: Determination of Organic Compounds in Drinking Water by Liquid-Solid Extraction and Capillary Column Gas Chromatography/Mass Spectrometry; Rev. 2.0 (PDF)(61 pp, 258 K, 1995)
601: Purgeable Halocarbons (PDF)(24 pp, 330 K, Promulgated 1984)
602: Purgeable Aromatics (PDF)(23 pp, 322 K, Promulgated 1984)
603: Acrolein and Acrylonitrile (PDF)(21 pp, 263 K, Promulgated 1984)
604: Phenols (PDF)(23 pp, 261 K, Promulgated 1984)
605: Benzidines (PDF)(18 pp, 207 K, Promulgated 1984)
606: Phthalate Ester (PDF)(20 pp, 219 K, Promulgated 1984)
607: Nitrosamines (PDF)(23 pp, 225 K, Promulgated 1984)
608: Organochlorine Pesticides and PCBs (PDF)(33 pp, 397 K, Promulgated 1984)
608.1: Organochlorine Pesticides in Municipal and Industrial Wastewater (PDF)(21 pp, 187 K, 1993)
608.2: Certain Organochlorine Pesticides in Municipal and Industrial Wastewater (PDF)(19 pp, 188 K, 1993)
609: Nitroaromatics and Isophorone (PDF)(20 pp, 212 K, Promulgated 1984)
610: Polynuclear Aromatic Hydrocarbons (PDF)(25 pp, 279 K, Promulgated 1984)
611: Haloethers (PDF)(20 pp, 232 K, Promulgated 1984)
612: Chlorinated Hydrocarbons (PDF)(20 pp, 223 K, Promulgated 1984)
613: 2,3,7,8-Tetrachlorodibenzo-p-Dioxin (PDF)(21 pp, 197 K, Promulgated 1984)
614: Organophosphorus Pesticides in Municipal and Industrial Wastewater (PDF)(21 pp, 176 K, 1992)
614.1: Organophosphorus Pesticides in Municipal and Industrial Wastewater (PDF)(18 pp, 180 K, 1992)
615: Chlorinated Herbicides in Municipal and Industrial Wastewater (PDF)(22 pp, 281 K, 1992)
617: Organohalide Pesticides and PCBs in Municipal and Industrial Wastewater (PDF)(33 pp, 314 K, 1992)
619: Triazine Pesticides in Municipal and Industrial Wastewater (PDF)(22 pp, 358 K, 1992)
622: Organophosphorus Pesticides in Municipal and Industrial Wastewater (PDF)(22 pp, 330 K, 1992)
622.1: Thiophosphate Pesticides in Municipal and Industrial Wastewater (PDF)(22 pp, 210 K, 1992)
624: Purgeables (PDF)(28 pp, 369 K, Promulgated 1984)
625: Base/Neutrals and Acids (PDF)(42 pp, 484 K, Promulgated 1984)
632: Carbamate and Urea Pesticides in Municipal and Industrial Wastewater (PDF)(20 pp, 292 K, 1992)
1613: Tetra- through Octa-Chlorinated Dioxins and Furans by Isotope Dilution HRGC/HRMS; Rev. B (PDF)(89 pp, 511 K, 1994)
1624B: Volatile Organic Compounds by Isotope Dilution GC/MS (PDF)(32 pp, 340 K, Promulgated 1984)
1625B: Semivolatile Organic Compounds by Isotope Dilution GC/MS (PDF)(40 pp, 457 K, Promulgated 1984)
1664A: n-Hexane Extractable Material (HEM; Oil and Grease) and Silica Gel Treated n-Hexane Extractable Material (SGT-HEM; Non-polar Material) by Extraction and Gravimetry (PDF)(28 pp, 151 K, February 1999, 821-R-98-002)
1664B: n-Hexane Extractable Material (HEM; Oil and Grease) and Silica Gel Treated n-Hexane Extractable Material (SGT-HEM; Non-polar Material) by Extraction and Gravimetry (PDF)(35 pp, 481 K, February 2010, 821-R-10-001)