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

Decision on Use of ASTM Method D7575

EPA published a decision in 2013 on the use of an alternative laboratory analytical method for oil and grease. (See CWA Methods Regulatory History.)

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