HOODLAND STP Wastewater Treatment Plant, Welches, Oregon

HOODLAND STP is a wastewater treatment plant located in Welches, Oregon, serving a population of approximately 4,000 residents. The plant provides secondary treatment, a standard level for municipal wastewater facilities in the United States, ensuring significant reduction of organic matter and suspended solids before discharge. With a designed capacity of 3,406.86 thousand cubic meters and an annual discharge volume of 957.71 thousand cubic meters, the plant operates at about 28% capacity. As a US facility, it is regulated under the Clean Water Act and must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Oregon Department of Environmental Quality, which set effluent limits to protect water quality. The plant discharges into a local water body that ultimately drains into the Sandy River basin, a tributary of the Columbia River. The Sandy River supports diverse aquatic life, including salmon and steelhead, and is an important ecological corridor in the Pacific Northwest. The plant's operations help maintain water quality in this sensitive watershed.

HOODLAND STP discharges into a local stream that flows into the Sandy River, a major tributary of the Columbia River. The Sandy River watershed supports critical habitat for endangered salmonids and other native fish species. The plant's secondary treatment and NPDES permit compliance help protect downstream water quality in this ecologically sensitive region.