Cascade Water Alliance (Cascade) today issued its draft 2025 Water System Plan (the draft 2025 WSP). The draft 2025 WSP, once adopted by the Cascade Board and approved by the State Department of Health, will fulfill Cascade’s responsibility to submit a plan to the Department of Health that demonstrates a water system’s ability to provide timely and reasonable water service to its current and future customers.
The draft 2025 WSP has been released for public comment, and interested individuals should direct comments and questions to Melina Thung, Cascade Chief of Staff, at mthung@cascadewater.org. A public hearing is set for April 2, 2025 at 1 pm at Cascade’s office, 11400 SE 8th Street, Suite 400, Bellevue, WA 98004.
Cascade is a municipal corporation comprised of five member cities and two districts within King County: the cities of Bellevue, Issaquah, Kirkland, Redmond and Tukwila, and Sammamish Plateau Water and Skyway Water and Sewer District. Cascade serves about 400,000 residents and an employment population of about 380,000.
Cascade will continue to purchase water from Seattle Public Utilities for its members. In addition, Cascade and Tacoma Public Utilities (TPU) are in the process of finalizing two new supply agreements. Individual members of Cascade own and operate their own water distribution systems, and some have their own independent groundwater supplies.
The 2025 Water System Plan will cover the same period as Cascade’s planning phase of the Tacoma-Cascade Pipeline (TCP) Program. Over the next 2-3 years, Cascade will focus on developing the TCP Facilities Plan. The TCP Facilities Plan will form the basis of design and requirements to construct the facilities necessary to connect Cascade’s and TPU’s systems.
Once Cascade completes the TCP Facilities Plan, it will develop and submit a 10-year Water System Plan to the Department of Health. The alternatives for sizing and routing transmission facilities and other key recommendations from the TCP Facilities Plan will be incorporated into Cascade’s next Water System Plan.
The draft 2025 Water System Plan can be viewed at www.cascadewater.org.
For more information about Cascade visit www.cascadewater.org