South Hillsboro Pipeline Project

Development of South Hillsboro, a 1,400 acre mixed-use community, requires the partnership and coordination of multiple agencies and infrastructure projects. The Willamette Water Supply Program is seizing the opportunity to coordinate with the City of Hillsboro, Washington County, and private developers to install the portion of the Willamette Water Supply pipeline that will serve the city of Hillsboro in conjunction with the construction of future roads through South Hillsboro.

Two sections of the Willamette Water Supply pipeline have been installed in coordination with improvements being made to Cornelius Pass Road:

Future partnership opportunities for the Willamette Water Supply Program in the South Hillsboro area include:

  • Designing and installing the water pipeline in partnership with Washington County’s widening of Cornelius Pass Road, from just north of the Cornelius Pass/TV Highway intersection to Francis Street. Construction is scheduled to begin in 2020.
  • Coordinating with the City of Hillsboro to locate the Willamette Water Supply Program pipeline in the future Cornelius Pass Road right-of-way south of Blanton Street to Rosedale Road. Construction is scheduled to begin in late 2020.

The coordinated construction of the pipeline and the Cornelius Pass Road improvements and extension will result in significant cost savings for water ratepayers, minimize community and neighborhood impacts, and eliminate the need for multiple construction projects.

To learn more about the future South Hillsboro, visit the City of Hillsboro’s information page. If you have a question or comments about activity in the area, call the South Hillsboro information line at 503-681-3999.

South Hillsboro Pipeline Fact Sheet

Our Reliable Water

Program Timeline

Developing the new Willamette water source will take over a decade.

Willamette Water Supply Program

Willamette Water Supply Program