Darigold Sunnyside
National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit
Feb. 25, 2026, 12 a.m. - March 27, 2026, 11:59 p.m. PT
We invite you to comment on the modified draft permit no. WA0052078.
The modified draft permit we propose to issue to Dairgold Sunnyside authorizes the discharge of treated industrial wastewater to Joint Drain 33.4 and the Port of Sunnyside Industrial Wastewater Treatment Facility.
Visit Water Quality Permitting and Reporting Information System (PARIS) website to view the draft permit online.
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 and meet the applicable water quality standards before it goes into surface water to protect human health and aquatic life. Learn more about water quality individual permits.
Comment online
- Use our online comment form
- Submit your comment by email: crowqpermits@ecy.wa.gov
Comment by mail
1250 W. Alder Street
Union Gap, WA 98903
Questions
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.