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National Pollutant Discharge Elimination System (NPDES)
National Links
- NPDES Permit Program Basics
- Where You Live
- Municipalities and Wastewater Treatment
- Municipal Biosolids
- Combined Sewer Overflows
- Sanitary Sewer Overflows
- Industrial and Commercial Facilities
- Industrial Pretreatment
- Stormwater
- Agriculture
- Animal Feeding Operations
- Decentralized Treatment Systems (Septic Systems)
The EPA Region 5 and State NPDES Programs regulate publicly owned treatment works and industrial facilities discharging directly to surface waters, industrial facilities discharging to publicly owned treatment works, beneficial reuse of municipal sewage sludge (biosolids), runoff from animal feeding operations, and storm water discharges.
Public Notices and Announcements
State NPDES Programs
All the Region 5 states are authorized to
administer the NPDES Program 
- Illinois Environmental Protection Agency
- Indiana Department of Environmental Management
- Michigan Department of Natural Resources and Environment (MDNRE)
- Minnesota Pollution Control Agency
- Ohio Environmental Protection Agency
- Wisconsin Department of Natural Resources
Permit Compliance System Data
State lists of
- permitees
- compliance schedules
- enforcement actions
- permitted discharge limits
Industrial Pretreatment Program
Thel Pretreatment Program controls and minimizes the loading of pollutants to publicly owned treatment works from industrial, non-domestic sources to protect against operational, water quality, biosolids quality and worker health and safety problems.
Sustainable Water Infrastructure
The Sustainable Infrastructure Initiative guides our efforts in changing how the nation views, values, manages, and invests in its extensive network of infrastructure to provide the public with access to water and sanitation.
"No Discharge" Zones
Designated bodies of water that prohibit the discharge of treated and untreated boat sewage.