Clean Water Act Analytical Methods

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.

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