Overview
Philomath WWTP serves approximately 4,650 residents in Benton County, Oregon. The plant discharges treated wastewater into local waterways, supporting the region's water quality under U.S. EPA and Oregon DEQ regulations.
Philomath WWTP is a municipal wastewater treatment facility located in Benton County, Oregon, serving a population of about 4,650. The plant is part of the region's infrastructure managed by local authorities, ensuring compliance with state and federal environmental standards. As a small to medium-sized facility, Philomath WWTP operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. The Oregon Department of Environmental Quality (DEQ) issues National Pollutant Discharge Elimination System (NPDES) permits to regulate discharges and protect water quality. The plant's treated effluent is discharged into the Marys River watershed, which flows into the Willamette River and eventually the Columbia River. This system supports diverse aquatic life and provides water for recreation and agriculture downstream.
Environmental context
The plant discharges into the Marys River, a tributary of the Willamette River, which flows into the Columbia River and ultimately the Pacific Ocean. The watershed supports salmon and steelhead runs, making water quality management critical for fish habitat and ecosystem health.
Frequently asked questions
Philomath WWTP is located in Benton County, Oregon, United States, serving the community of Philomath and surrounding areas.
The plant serves approximately 4,650 residents, classifying it as a small to medium-sized municipal wastewater treatment facility.
The plant discharges treated effluent into the Marys River, a tributary of the Willamette River, which flows into the Columbia River and eventually the Pacific Ocean.
The plant operates under the U.S. Clean Water Act, with permits issued by the Oregon Department of Environmental Quality (DEQ) under the National Pollutant Discharge Elimination System (NPDES).
For small to medium-sized agglomerations in Oregon, secondary treatment is standard, often involving biological processes to reduce organic matter and solids before discharge.
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