The Willamette Water Supply Program is a partnership between the Tualatin Valley Water District, the City of Hillsboro and the City of Beaverton to develop the mid-Willamette River at Wilsonville as an additional water supply source.

This new system, when operational in 2026, will provide a reliable water supply for the region by helping water system operators balance supply during times of drought or other supply interruptions, as well as recover more quickly after a large natural disaster.

Why the Willamette River?

The mid-Willamette River at Wilsonville offers significant benefits: excellent finished water quality, redundancy, ownership and control of the supply, year-round reliability, and better value.


"The new mid-Willamette water supply provides reliability to protect public health and safety. The region will have multiple sources of water – if one source is restricted or unavailable, another source can be used.”

Mark Knudson, P.E. – Co-Chair, Oregon Resilience Plan for Water & Wastewater Systems