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Comment period

Stevenson Wastewater Treatment Plant Draft Permit

National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

June 11, 2025, 12 a.m. - July 11, 2025, 11:59 p.m. PT

We invite you to comment on the draft permit No. WA0020672

The draft permit we proposed to reissue to Stevenson Wastewater Treatment Plant authorizes the discharge of treated domestic wastewater into the Columbia River-Bonneville Pool at River Marker 150. 

You can view the documents at Stevenson Wastewater Treatment Plant Permit Documents or visit the Water Quality Permitting and Reporting Information System (PARIS) website.

Background

We regulate wastewater released from municipalities and industries using the National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit. This permit regulates wastewater that goes directly into lakes, rivers, Puget Sound, or the ocean (surface water). All wastewater must be treated before it goes into surface water to protect human health and aquatic life. Learn more about water quality individual permits.

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Comment online

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Comment by mail

Alisha Mckittrick
Southwest Region Office
PO Box 47775
Olympia, WA 98504-7775
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Questions

Nhi Pham
Permit Manager
nhi.pham@ecy.wa.gov
360-819-6119

To request ADA accommodation, contact Ecology's ADA Coordinator by email at ecyadacoordinator@ecy.wa.gov, or call 360-407-6831, 711 (relay service), or 877-833-6341 (TTY). More about our accessibility services.