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Clean Water Act Analytical Methods

Other Clean Water Act Test Methods: Microbiological

Not Approved Under 40 CFR Part 136

Photo of viruses and sample preparationIn addition to developing and approving methods for use in compliance monitoring, EPA may develop methods to support studies of specific industries (e.g., the Effluent Guidelines program) or for use in broad national surveys. If such studies or surveys lead to regulatory limits of new contaminants, EPA approves the applicable methods for nationwide or industry-specific use through rulemaking which includes an opportunity for public comment.
Although the following methods are not in EPA regulations, they may be of interest to regulated entities, permitting authorities, and the public.The presence of a method here does not imply a regulatory requirement for its use.

Rapid Microbiological Methods for Ambient Water

We are making available a method that uses a genetic quantitative polymerase chain reaction (qPCR) approach to detect enterococci in ambient water. The method will be updated following multi-laboratory validation in marine and fresh water bodies.

Calculation Spreadsheets for Methods

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