SCIO STP Wastewater Treatment Plant, Scio, Oregon

SCIO STP is a municipal wastewater treatment plant located in Scio, Oregon, a small community in Linn County. The plant serves a population of approximately 710 residents, providing essential sanitation services for the local area. The plant operates with secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater facilities. With a designed capacity of 3,686.98 cubic meters per day and an average discharge volume of 264.98 cubic meters per day, the plant has ample capacity to handle current flows. As a facility in the United States, it operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the Oregon Department of Environmental Quality, which sets effluent limits to protect water quality. The treated effluent from SCIO STP is discharged to a local water body, likely a tributary of the Santiam River or the Willamette River system. The Willamette River flows northward through Oregon's Willamette Valley and eventually joins the Columbia River, which empties into the Pacific Ocean. The plant's discharge contributes to the overall water quality of this important regional watershed, which supports diverse aquatic life and provides water for agricultural and recreational uses.

SCIO STP discharges treated wastewater into a local water body within the Willamette River basin. The Willamette River flows through Oregon's fertile valley and joins the Columbia River, which drains to the Pacific Ocean. The watershed supports salmon and steelhead runs, as well as other native fish species. Maintaining high water quality is critical for these ecological resources and for downstream communities that rely on the river for drinking water and recreation.