Contact Us About NPDES

Do you have a comment or a NPDES question?

• We can answer questions about the NPDES program, including stormwater.
• We do not have information on other topics, please use the “Contact Us” link on the relevant EPA webpage.

Are you reporting an environmental issue related to an NPDES permit?

• If you see a possible environmental issue that may lead to an immediate threat to human health or the environment, report the event at: Report Environmental Violations.
• For other NPDES related possible environmental issues, first contact the permitting authority that implements the NPDES program in your state. Many states have reporting links on their environmental agency's website.
• EPA also maintains a list of state contacts below and we can help you find a point of contact for reporting the environmental issue.
• You can also submit EPA's form for reporting possible environmental violations and it will be forwarded to the appropriate regulatory authority.

Submit a Question or Comment about NPDES

Contacts for EPA headquarters, EPA regional, state, and Tribal communities are categorized below for general information and specific NPDES program areas that may address your question or comment. If you have a general comment or do not know whom to contact, use the NPDES online form below to submit your question or comment.

For general NPDES program information, click on the link below to find the EPA headquarters, EPA regional, state, and Tribal contact:

• General Information About NPDES

For a specific NPDES program area, click on a link below to find the EPA headquarters, EPA regional, state, and Tribal contact:

• Animal Feeding Operations (AFOs)
• Aquaculture
• Combined Sewer Overflows (CSOs)
• Integrated Planning
• National Pretreatment Program
• Nutrients Permitting
• Peak Flows at Sewage Treatment Plants
• Pesticide Permitting
• Sanitary Sewer Overflows (SSOs)
• Stormwater (Construction, Industrial, and Municipal)
• Vessel Incidental Discharge Permitting
• Water Quality Trading
• Watershed-based Permitting
• NPDES Whole Effluent Toxicity (WET)

• Be sure to include your email address if you would like a response.
• If your comment is related to a specific webpage or document, please include the link or URL.
• If your issue is with a specific facility or property, please include your state in your inquiry. Many states are authorized to implement the NPDES program and we will assist you with finding the correct state contact using your state location.