An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Oregon NPDES Permits

In Oregon, EPA issues NPDES permits on tribal lands and in federal waters off the coast (see table below). EPA has delegated authority to issue other NPDES permits to the Oregon Department of Environmental Quality (ODEQ).

For state-issued permits, visit ODEQ Water Quality Permits.Exit

Related pages:

Click on the facility/permit name to view the permit and supporting documents.

NPDES Permits Issued by EPA in Oregon
Location Facility or Permit Name Permit Number Permit Status Effective Date Expiration Date
Warm Springs Reservation Warm Springs Kah-Nee-Ta Resort OR0034100 Final 2007-12-01 2012-11-30
Warm Springs Reservation Warm Springs Wastewater Treatment Plant OR0032638 Final 2000-04-03 2005-04-03
Warm Springs Reservation Warm Springs National Fish Hatchery OR0054917 Final 2019-03-01 2024-02-29
Offshore Coastal Waters General Permit for Offshore Seafood Processors in Federal Waters Off the Washington and Oregon Coast WAG520000 Final 2019-05-01 2024-04-30
Lower Columbia River Discharge Permits for Federal Hydroelectric Projects in the Lower Columbia River (Bonneville Project, The Dalles Lock and Dam, John Day Project, McNary Lock and Dam) WA0026778;
Draft N/A N/A