Laws & Regulations

Method 1694 - Frequent Questions

Questions and answers about EPA Method 1694, which covers 73 pharmaceuticals and personal care products (PPCPs)

Air Standards Delegations in Wisconsin

Federal air regulations that have been delegated to state or local air pollution control agencies in Wisconsin

Air Standards Delegations in Minnesota

Federal air regulations that have been delegated to state or local air pollution control agencies in Minnesota

Industrial Wastewater Studies - Miscellaneous

Studies of industrial wastewater discharges from various industrial categories. The studies are used in the planning process for Effluent Guidelines regulations.

Best Conventional Pollutant Control Technology Effluent Guidelines

Rules promulgating effluent limitations for industrial wastewater, based on Best Conventional Pollutant Control Technology (BCT), as defined at Clean Water Act section 304(b)(4). Covers multiple industrial categories.

Approved CWA Test Methods: Organic Compounds

Analytical methods for organic compounds in water; promulgated under Clean Water Act section 304(h), published at 40 CFR Part 136

Providing Safe Drinking Water in America: 2022 National Public Water Systems Report

The National Public Water Systems Compliance Report summarizes and evaluates annual reports submitted by primacy agencies regarding compliance at public water systems (PWSs) of all types and sizes in the U.S.

Legal Authority for CWA Analytical Methods

Summary of legal authority for EPA issuance of Clean Water Act analytical methods (40 CFR Part 136)

Approved CWA Test Methods for Pharmaceutical Pollutants

Chemical test methods for pharmaecutical pollutants in water. Approved for use with effluent guidelines regulations for the Pharmaceutical Manufacturing Category (40 CFR Part 439).

Approved Industry-Specific CWA Test Methods

Approved analytical methods for wastewater from specific industries: Pharmceutical Manufacturing (40 CFR Part 439); Pesticide Chemicals Manufacturing (40 CFR Part 455)

Alternate Test Procedure Documents

Documents supporting the Clean Water Act ATP program, described at 40 CFR 136.4 and 136.5.

Other Clean Water Act Test Methods: Microbiological

Microbiological test methods for ambient water, wastewater and groundwater; and related publications. These methods are not approved under 40 CFR Part 136.