Clean Water Act Analytical Methods
EPA publishes laboratory analytical methods (test procedures) that are used by industries and municipalities to analyze the chemical, physical and biological components of wastewater and other environmental samples required by the Clean Water Act.
Current and Recent Actions
Approved CWA Methods
Other CWA Methods
- Chemical
- Microbiological
including MST Methods 1696 & 1697 - Biosolids
Alternate Test Procedures
Regulations and Support Documents
- Regulatory History for:
- Methods Update Rules
- Microbiological methods
- Oil & grease
- Cyanide
- Dioxins & furans
- Mercury and chromium-VI
- Other methods support documents
- Toxic and Priority Pollutant lists
- Legal authority for methods