Wilbur Wastewater Treatment Plant - Serving Wilbur, Washington

The Wilbur Wastewater Treatment Plant is a municipal facility located in Wilbur, Lincoln County, Washington, United States. It serves a population of 885 residents, making it a small-scale treatment plant typical of rural communities in the Pacific Northwest. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater facilities. Its designed capacity is 965.28 megaliters, and the current discharge volume is 643.52 megaliters, indicating operational headroom. The plant is operated as part of the local municipal infrastructure. The treated effluent is discharged into a local waterway that ultimately drains into the Columbia River basin. The Columbia River system supports diverse aquatic life, including salmon runs, and is a critical water resource for the region. The plant's operations contribute to protecting downstream water quality in this ecologically significant watershed.

The plant discharges into a tributary of the Columbia River, which flows into the Pacific Ocean. The Columbia River basin is a major ecological corridor supporting salmon, steelhead, and other native species. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream aquatic habitats and water quality in this semi-arid region of eastern Washington.