03/13/2026
After several years of planning, design, and construction, the Willamette Water Supply System Water Treatment Plant in Sherwood, OR will soon provide clean drinking water for much of Washington County, as part of the larger earthquake-resilient WWSS (Link Below). GreenWorks also contributed to other components of the WWSS: the Raw Water Intake in Wilsonville and the reservoir on Cooper Mountain.
This cutting-edge treatment facility includes an Administration building, designed by MWA Architects, which features public spaces including courtyards, a conference room, and an overlook platform in the preserved native forest surrounding a Kolk pond wetland. GreenWorks used the theme of overlapping water droplet ripples for the courtyard design, and rainy days will activate the building and front courtyard.
Rain water on the roof will be directed to scuppers and then pour into stone basins, in full view from inside the front doors and from the conference room. The roof water will then run through an ornamental trench drain toward a planted rain garden.
With years of anticipation, it is rewarding to see the project come to life. The stone masonry by Dennis’ 7 Dees is excellent and the courtyards are starting to take shape with the trench drain and pavers now installed. This is one small part of the 30 acre site for which GreenWorks also designed (in collaboration with Consor) frontage streetscape, monument signage, walls, security fencing and gates, screening strategies, and restoration planting.
earthquake-resilient WWSS:https://www.ourreliablewater.org/wordpress/wp-content/uploads/2025/02/WWSP-Projects-Map-Feb2025-Schedule-Feb2025-ENGLISH.pdf
