Sutherlin Wastewater Treatment Plant Improvements

The Sutherlin Wastewater Treatment Plant Improvements project consisted of updating and expanding an existing wastewater treatment plant for the City of Sutherlin. This project included construction of a four-basin, 2,000,000+ gallon sequencing batch reactor with new influent components. The components included new influent wastewater screens, influent pump station with five 1,800gpm pumps, a headworks facility, and two tertiary filters. We also constructed an ultraviolet disinfection facility, wood framed electrical room, new effluent recycled water pump station, and a CMU dewatering/bio-solids room. Some of the remodeling work included a remodel of existing laboratory and garage, rehabilitation to existing aerobic digester tanks, and an off-site pump station rebuild. Crews also installed mechanical piping and specialty equipment while overseeing the interior finishing of the new structures (blower facility, biosolids dewatering facility, and electrical facility). These improvements increased the daily treatment capacity from 1.3MGD to 7.0MGD and improved the quality of the treated water.


Sutherlin, OR


City of Sutherlin