Creston Wastewater Treatment Plant | Secondary Treatment Facility in Washington

Creston Wastewater Treatment Plant is a municipal facility located in Creston, Washington, a small town in Lincoln County. Designed to serve a population of 235, the plant provides secondary treatment, which is the standard level for small communities under the U.S. Clean Water Act. As a secondary treatment plant, Creston uses biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 177.91 volume units, matching its discharge volume, indicating consistent operation. Under the National Pollutant Discharge Elimination System (NPDES), the plant must comply with effluent limits set by the Washington State Department of Ecology. The plant discharges treated wastewater into the local watershed, which ultimately drains into the Columbia River basin. This river system supports diverse aquatic life and provides water for irrigation, recreation, and municipal use downstream. Proper treatment helps protect water quality in this ecologically important region.

The plant discharges into the local watershed, which flows into the Columbia River, a major river system in the Pacific Northwest. The Columbia River supports salmon runs, steelhead, and other native fish species, making water quality critical for ecological health. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream habitats and recreational uses.