Bellevue’s drinking water comes from the Cedar River and Tolt River watersheds in the Cascade Mountains. The city acquires its drinking water at a reasonable cost through the Cascade Water Alliance, an association of regional water districts and cities.
Bellevue's surface water is made up of over 60 miles of streams, three small lakes and more than 800 acres of wetlands. Bordered by Lake Washington to the west and Lake Sammamish to the east, the city has taken steps to preserve its vital waterways, which are habitat for salmon and other wildlife.
