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National Pollutant Discharge Elimination System (NPDES)

National Links

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 Exit EPA

Permit Compliance System Data

State lists of

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.


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