We’ve made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Public Notice: Proposed Wastewater Discharge Permit for Town of Coulee Dam in Washington

Publish Date: 08/16/2017


The Town of Coulee Dam owns and operates a facility that treats wastewater from domestic, industrial, and commercial sources. The facility discharges secondarily treated wastewater throughout the year to the Columbia River for a service population of 1300. Disinfection is by sodium hypochlorite. The design flow of the wastewater treatment plant is 0.50 million gallons per day.

A new treatment plant will begin operation March or April, 2018 with a design flow of 0.195 mgd. The new plant will discharge secondarily treated wastewater throughout the year to the Columbia River. Disinfection will be by ultraviolet radiation.

Tentative Determination

The Region 10 Office of EPA has tentatively determined to reissue a discharge permit to the above listed applicant. 

Administrative Record

Electronic copies of the draft permit and technical fact sheet are available under "Related Documents" below. Copies are also available for review between 8:30am-4:30pm at EPA's Seattle offices:

U.S. EPA Region 10
1200 Sixth Avenue, Suite 900
Seattle, Washington, 98101

The draft permit and fact sheet are also on file at:

Office of Environmental Trust
Confederated Tribes of the Colville Reservation
PO Box 150
Nespelem, WA 99155

Copies and other information may be requested by writing to the EPA at the above address to the attention of the NPDES Permits Unit, or by contacting Audrey Washington (washington.audrey@epa.gov), (206) 553‑0523.

Applicant or Respondent

Town of Coulee Dam
300 Lincoln Ave.
Coulee Dam, WA 99116

Permit #: WA0020281

Related Documents

You may need Adobe Reader to view files on this page. See EPA’s About PDF page to learn more.