We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Clean Water Act Analytical Methods

Alternate Test Procedure Documents

Documents related to the Clean Water Act Alternate Test Procedure program.


You may need Adobe Reader to view files on this page. See EPA’s About PDF page to learn more.