We are the Westside Water Association (WWA).

We provide clean drinking water to over 200 households in our neighborhood. Our district is on the shore of Colvos Passage, on the northwest side of Vashon Island. The water sources for WWA are adjacent to Shinglemill Creek. The creek runs north through the center of the island and drains into Puget Sound at Fern Cove. Our water supply includes a spring that enters the creek near our pumphouse, a well that taps a 300 foot-deep aquifer within the canyon, two wells on the canyon crest, a new “Back 40” well off of SW 156th St, and the stream itself as an emergency source. (A “boil water” notice would be sent to all users if the stream was to be used.) All of our water comes from the Shinglemill watershed and is replenished by rain that falls mainly from October through May.

Recent Newsletters


Click here to check out some water saving tips!


Can never be too prepared! Click here to see the Emergency Prep information.


Learn about the great work that Global Water Initiative is doing by clicking here!


Want to read up on some of the old Newsletters? Click here.