One Water

All water moves through a cycle of use and reuse in watersheds throughout the world. This closed system supports our economy, ecology and community. This is one water.

Learn more about how we protect water resources in the Tualatin River Watershed together with cities, businesses, agriculture and environmental partners. Explore our One Water Cycle website to follow the many paths water can take from the rain, through pipe systems, treatment facilities and back to the environment to be used again.


The Tualatin River is the only river in Washington County.



The Tualatin River

Receive news on what we are doing in the community and our innovative solutions to continue on providing clean water.