Overview
East Wenatchee STP serves approximately 13,220 people in East Wenatchee, Washington. The plant discharges treated wastewater into the Columbia River basin, supporting local water quality.
East Wenatchee STP is a municipal wastewater treatment facility located in East Wenatchee, Douglas County, Washington. It serves a population of about 13,220 residents in this growing community along the Columbia River. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal facilities of this scale. As a medium-sized agglomeration, it is subject to National Pollutant Discharge Elimination System (NPDES) permitting administered by the Washington State Department of Ecology, ensuring compliance with water quality standards. Treated effluent from the plant is discharged into the Columbia River basin, a major waterway that flows through the Pacific Northwest to the Pacific Ocean. The river supports diverse aquatic life, including salmon runs, and the plant's operations are critical to maintaining downstream water quality and ecosystem health.
Environmental context
The plant discharges into the Columbia River, which flows westward through Washington and Oregon to the Pacific Ocean. The river supports critical salmon and steelhead habitats, and the plant's nutrient and pollutant removal helps protect these species and the broader aquatic ecosystem.
Frequently asked questions
East Wenatchee STP is located on Sunset Highway in East Wenatchee, Douglas County, Washington, USA.
The plant serves approximately 13,220 people in the East Wenatchee area.
The plant discharges treated effluent into the Columbia River basin, which flows to the Pacific Ocean.
The plant operates under the U.S. Clean Water Act and is subject to NPDES permitting by the Washington State Department of Ecology.
Under the Clean Water Act, municipal plants of this size typically require secondary treatment, which includes biological processes to reduce organic matter and suspended solids.
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