Brownsville STP - Secondary Wastewater Treatment Plant in Brownsville, Oregon

Brownsville STP is a municipal wastewater treatment facility located in Brownsville, Oregon, serving a population of approximately 1,500 residents. The plant provides secondary treatment, a standard level for small communities in the United States, ensuring that pollutants are reduced before discharge. The plant operates under the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all point source discharges. For a facility of this scale, secondary treatment is the minimum requirement, and the plant's discharge volume of 556.46 (units unspecified) aligns with its designed capacity of 556.45, indicating stable operations. The treated effluent from Brownsville STP is discharged into a local water body that ultimately drains into the Willamette River, a major tributary of the Columbia River. This river system supports diverse aquatic life and provides water for irrigation, recreation, and municipal use downstream. The plant's location inland, away from the coast, reduces direct marine impact.

The plant discharges into a local stream that flows into the Willamette River, which then joins the Columbia River before reaching the Pacific Ocean. The Willamette River basin is ecologically significant, supporting salmon runs and other native fish species. The plant's secondary treatment helps protect water quality in this sensitive freshwater ecosystem.