Our Members

Cascade's members joined together in 1999 to ensure water supply for the future. Our five cities and two water and sewer districts work to address current and future needs using the water supply efficiently through conservation programs.

Collectively, the membership of Cascade serves over 350,000 residents and 20,000 businesses. Membership is open to any public water utility within the region.


Bellevue is the fifth largest city in Washington, with a population of 130,000. It is the Eastside's high-tech and retail center, serving 37,288 water customers.



Redmond is known for its natural beauty, 34 parks, over 25 miles of trails, and first-class places to shop or stay and dine. Serving 31,822 water customers.



Kirkland is a place of history, nature and metro 'lifestyling' in which to live, work, visit and play. Serving 48,072 water customers with 12,450 service connections.



This one-time logging and mining village has become the northwest destination for living, working, playing and doing business in the 21st Century. Issaquah serves 6,405 customers within approximately 10 square miles.



Tukwila’s central location at the crossroads of Interstate 5 and 405 makes it an ideal site for commerce serving water to over 700 business connections and approximately 1400 residential connections.


Sammamish Plateau Water

Serving more than 64,000 customers in Sammamish, Issaquah, and areas of unincorporated King County for nearly 70 years.


Skyway Water & Sewer District

Located in the West Hill area of unincorporated King County, Skyway serves water to 3,350 customers within a 1.8 square mile area with 40 miles of water mains and provides sewer collection to 4,040 customers within a 2.7 square mile area via 48 miles of sewer system piping.


Board Members