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National Pollutant Discharge Elimination System (NPDES)
Contact Us

Contact Us About NPDES

Click on a link below for EPA headquarters, EPA regional, state, and tribal contacts for a specific NPDES program area:

  • General Information About NPDES
  • Animal Feeding Operations (AFOs)
  • Aquaculture
  • Combined Sewer Overflows (CSOs)
  • Integrated Planning
  • National Pretreatment Program
  • Peak Flows at Sewage Treatment Plants
  • Pesticide Permitting
  • Sanitary Sewer Overflows (SSOs)
  • Stormwater (Construction, Industrial, and Municipal)
  • Vessel Incidental Discharge Permitting
  • Water Quality Trading

Please use the form below to send us comments or questions. Be sure to include your email address if you would like a response.

Report an environmental violation

Report a Violation

Report possible violations of environmental laws and regulations.

Mailing Address:

U.S. Environmental Protection Agency
National Pollutant Discharge Elimination System Program
Office of Water, Office of Wastewater Management
1200 Pennsylvania Avenue, NW (Mailcode 4203M)
Washington, DC 20460

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Last updated on March 24, 2022