National Pollutant Discharge Elimination System (NPDES)
New and Notable
- Understanding Nutrient Management Plans Learning Modules
- Off-Site Stormwater Management MS4 Compendium: Compendium Part 7: Off-Site Stormwater Management (pdf)
- Off-Site Stormwater Management
- Addressing PFAS Discharges in EPA-Issued NPDES Permits and Expectations Where EPA is the Pretreatment Control Authority (pdf)
- Technical Assistance Opportunity for CSO Communities
- Low Flow Statistics Tools Handbook
- FAQs for Control Authorities on Dental Rule
- Final Rule Published in Federal Register: Public Notification Requirements for CSOs to the Great Lakes Basin
- Online Training: Permit Writing Tips and Best Practices
- Compendium of State Approaches for Manure Management
- MS4 General Permit Remand Rule
- Public Participation in the NPDES Permit Issuance Process (pdf)