TVWD provides water to about 220,000 people over more than 44 square miles of Washington County, Oregon, including portions o ... f Beaverton, Hillsboro, Tigard and Unincorporated Washington County. We are very fortunate to have: several high quality water sources and are constructing an additional resilient supply system from the Willamette River in partnership with the City of Hillsboro and the City of Beaverton. See: ourreliablewater.org for more of the additional supply coming in 2026. Our Mission: To provide our community quality water and customer service Our Vision: Delivering the best water, service, value Our Values: Reliability, Integrity, Stewardship, Excellence, Safety read more