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.

National Pollutant Discharge Elimination System (NPDES)

Pretreatment General and Specific Prohibitions Documents

Documents related to specific prohibitions of hazardous exposure to wastewater.

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