What is NPDES?

The NPDES permit program addresses water pollution by regulating point sources that discharge pollutants to waters of the United States.

Created in 1972 by the Clean Water Act, the NPDES permit program is authorized to state governments by EPA to perform many permitting, administrative, and enforcement aspects of the program.

EPA Publishes the 2016 Pesticide General Permit

View the PGP.

New Guide: Long-Term Stormwater Planning

Community Solutions for Stormwater Management: A Guide for Voluntary Long-Term Planning

New Guidance: Hazardous and Toxic Chemical Discharges to POTWs

• Best Practices for NPDES Permit Writers and Pretreatment Coordinators to Address Toxic and Hazardous Chemical Discharges to POTWs
• Hazardous Waste Reporting Requirements for Industrial Users under 40 CFR 403.12(p)&(j)