We invite your comments on NPDES permit WA0000892 being reissued to Kaiser Aluminum Washington located in Spokane County. The permit authorizes the discharge of treated wastewater to the Spokane River.
View the draft documents or visit PARIS, Ecology's Water Quality Permitting and Reporting Information System website.
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.