Willamette Water Supply System (WWSS)

Temporary home for WWSS information

Special Board Meeting - August 6, 2019

Executive Session - 9 a.m.
Board Meeting - 9:30 a.m.

TVWD Headquarters
1850 SW 170th Avenue
Beaverton, OR 97003



Agenda Packets

Meeting Minutes

Meeting Audio Stream

July 3, 2019
Meeting Agenda Packet
Minutes Audio Stream


Future Meeting Dates:

  • September 5, 2019
  • October 3, 2019
  • November 7, 2019
  • December 5, 2019


About the WWSS Commission

The Willamette Water Supply System Commission is responsible to oversee the design, permitting, funding, construction, ownership, operation, management, repair and replacement, and, as reasonable, providing information to the WWSS Partners in support of their procuring financing for the WWSS in order to supply potable water to TVWD, Hillsboro, Beaverton, and other potential municipal water providers.

The WWSS Commission is a partnership formed under ORS Chapter 190 between the following parties: Tualatin Valley Water District and the cities of Hillsboro and Beaverton.


About the Willamette Water Supply Program

TVWD, the City of Hillsboro, and the City of Beaverton are partnering on the Willamette Water Supply Program to develop the mid-Willamette River at Wilsonville as an additional water supply source.

The new Willamette Water Supply 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. Planning and construction of this important water project is underway and includes a new water filtration plant, more than 30 miles of water pipelines, and water storage tanks - all built to modern seismic standards.

More information about the Willamette Water Supply Program is available on their web page

Contact the WWSS Commission