Microsoft EAT02-09 Data Center Campus Revised Permit Application
Wastewater Discharge Permit - State Waste Discharge Permit
Oct. 23, 2025, 12 a.m. - Nov. 30, 2025, 11:59 p.m. PT
We invite you to comment on revised permit application ST0501334.
Microsoft Corporation has applied to revise State Waste Discharge Temporary Permit No. ST0501334, which would allow for the discharge of noncontact cooling water without additives to Douglas County Sewer District from its facility located at 901 Urban Industrial Way, East Wenatchee, WA.
Visit PARIS, Ecology's Water Quality Permitting and Reporting Information System webiste to view the application online.
We regulate wastewater released from municipalities or industries using the State Waste Discharge Permit. This permit regulates wastewater that goes into the ground (groundwater) or to a publicly owned treatment works (POTWs). 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 West 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.