BACKGROUND
For 45 years, the City of Redmond has utilized the Effluent and Biosolids Complex—a 610-acre property northwest of the city—to manage and reuse all of Redmond’s treated wastewater effluent and biosolids. Initially treated at the Water Pollution Control Facility (WPCF) at the north end of the Dry Canyon, the treated effluent is then sent to this facility for beneficial reuse and discharge.
Since the last major WPCF expansion in 2000, the population of Redmond and the surrounding area has grown significantly. As this growth continues, expanding the treatment facilities has become vital to meet future needs.
The City plans to decommission the existing mechanical WPCF in the Dry Canyon and consolidate operations to a natural system known as the Redmond Wetlands Complex at 5801 Northwest Way, Redmond. The new system will use engineered ponds and wetlands to naturally treat effluent, while supporting wetland habitat for birds and other wildlife and offering recreational and educational opportunities. Construction begins in early July 2025 and is anticipated to be completed by Fall 2027.