Approved CWA Test Methods: Organic Compounds
Methods approved under Clean Water Act section 304(h) and published at 40 CFR Part 136.
August 2017:
- Method 608.3 (replaces Method 608)
- Method 624.1 (replaces Method 624)
- Method 625.1 (replaces Method 625)
- Validation of SPE Products and Associated Procedures with Method 625.1
Note: The drinking water method 525.1 is approved for Clean Water Act use, but it is not approved for Safe Drinking Water Act (SDWA) compliance monitoring.
- 420.1: Phenolics (Spectrophotometric, Manual 4AAP With Distillation) (pdf)
- 420.4: Determination of Total Recoverable Phenolics by Semi-Automated Colorimetry; Rev. 1.0 (pdf)
- 525.1: Determination of Organic Compounds in Drinking Water by Liquid-Solid Extraction and Capillary Column Gas Chromatography/Mass Spectrometry; Rev 2.2 (pdf)
- 525.2: Determination of Organic Compounds in Drinking Water by Liquid-Solid Extraction and Capillary Column Gas Chromatography/Mass Spectrometry; Rev. 2.0 (pdf)
- 601: Purgeable Halocarbons (pdf)
- 602: Purgeable Aromatics (pdf)
- 603: Acrolein and Acrylonitrile (pdf)
- 604: Phenols (pdf)
- 605: Benzidines (pdf)
- 606: Phthalate Ester (pdf)
- 607: Nitrosamines (pdf)
- 608.1: Organochlorine Pesticides in Municipal and Industrial Wastewater (pdf)
- 608.2: Certain Organochlorine Pesticides in Municipal and Industrial Wastewater (pdf)
- 608.3: Organochlorine Pesticides and PCBs by GC/HSD (pdf)
- 609: Nitroaromatics and Isophorone (pdf)
- 610: Polynuclear Aromatic Hydrocarbons (pdf)
- 611: Haloethers (pdf)
- 612: Chlorinated Hydrocarbons (pdf)
- 613: 2,3,7,8-Tetrachlorodibenzo-p-Dioxin (pdf)
- 614: Organophosphorus Pesticides in Municipal and Industrial Wastewater (pdf)
- 614.1: Organophosphorus Pesticides in Municipal and Industrial Wastewater (pdf)
- 615: Chlorinated Herbicides in Municipal and Industrial Wastewater (pdf)
- 617: Organohalide Pesticides and PCBs in Municipal and Industrial Wastewater (pdf)
- 619: Triazine Pesticides in Municipal and Industrial Wastewater (pdf)
- 622: Organophosphorus Pesticides in Municipal and Industrial Wastewater (pdf)
- 622.1: Thiophosphate Pesticides in Municipal and Industrial Wastewater (pdf)
- 624.1: Purgeables by GC/MS (pdf)
- 625.1: Base/Neutrals and Acids by GC/MS (pdf)
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Validation of SPE Products and Associated Procedures with EPA Method 625.1 (pdf)
Summarizes the requirements for laboratories to utilize solid-phase extraction (SPE) as an extraction technique in EPA Method 625.1. - 632: Carbamate and Urea Pesticides in Municipal and Industrial Wastewater (pdf)
- 1613: Tetra- through Octa-Chlorinated Dioxins and Furans by Isotope Dilution HRGC/HRMS; Rev. B (pdf)
- 1624B: Volatile Organic Compounds by Isotope Dilution GC/MS (pdf)
- 1625B: Semivolatile Organic Compounds by Isotope Dilution GC/MS (pdf)
- 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)
- 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)