Overview
DAVENPORT LAGOON is a secondary wastewater treatment plant in Davenport, Washington, serving 1,780 people. It discharges 605.67 megaliters per year and operates under the US Clean Water Act NPDES permit system.
DAVENPORT LAGOON is a municipal wastewater treatment facility located in Davenport, Washington, United States. The plant serves a small population of 1,780 residents in Lincoln County, providing secondary treatment to meet local water quality standards. The plant operates under the US Clean Water Act, which requires secondary treatment for municipal wastewater. As a small agglomeration, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Washington State Department of Ecology, ensuring compliance with effluent limits for biochemical oxygen demand and total suspended solids. The treated effluent is discharged into the local watershed, which drains to the Columbia River basin. The Columbia River is a major Pacific Northwest waterway that supports diverse aquatic life, including salmon runs and other migratory fish species. The plant's location inland reduces direct marine impact, but its discharge contributes to the overall health of the river ecosystem.
Environmental context
The plant discharges into the Columbia River basin, which flows through Washington and Oregon before reaching the Pacific Ocean. The Columbia River supports critical habitats for salmon, steelhead, and other native fish species. The plant's secondary treatment helps protect downstream water quality in this ecologically significant river system.
Frequently asked questions
DAVENPORT LAGOON is located on Wheatland Road North in Davenport, Lincoln County, Washington, United States.
The plant serves approximately 1,780 residents in the Davenport area.
The plant provides secondary treatment and discharges treated effluent into the local watershed, which drains to the Columbia River basin.
The plant operates under the US Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Washington State Department of Ecology.
Small municipal plants in the US typically provide secondary treatment, as required by the Clean Water Act, often using lagoon or activated sludge systems to meet effluent limits.
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