Overview
Grangeville S_T Facility is a municipal wastewater treatment plant serving approximately 3,141 people in Grangeville, Idaho. The plant operates under the U.S. Clean Water Act framework, with oversight from the Idaho Department of Environmental Qualit
The Grangeville S_T Facility is a municipal wastewater treatment plant located on North State Street in Grangeville, Idaho County, Idaho. Serving a population of approximately 3,141, this facility is part of the town's essential infrastructure for managing domestic wastewater. Under the U.S. Clean Water Act, wastewater treatment plants of this scale are typically required to meet secondary treatment standards through the National Pollutant Discharge Elimination System (NPDES) permit program. The Idaho Department of Environmental Quality administers these permits, ensuring that effluent limits protect water quality in receiving streams. The plant's treated effluent is discharged to a local waterway, which ultimately drains into the Clearwater River basin and then the Snake River, a major tributary of the Columbia River. The Columbia River system supports diverse aquatic life, including salmon and steelhead runs, making water quality management critical for downstream ecosystems.
Environmental context
The Grangeville S_T Facility discharges into a local stream that flows into the Clearwater River, a major tributary of the Snake River. The Snake River joins the Columbia River, which empties into the Pacific Ocean. This watershed supports important fish species such as Chinook salmon and steelhead trout, which are sensitive to nutrient pollution and oxygen depletion. Proper treatment helps maintain water quality for these migratory fish and other aquatic life.
Frequently asked questions
The Grangeville S_T Facility is located on North State Street in Grangeville, Idaho County, Idaho, United States.
The facility serves approximately 3,141 people, representing the municipal wastewater needs of Grangeville.
The plant discharges treated effluent into a local stream that flows into the Clearwater River, part of the Snake River basin, which ultimately reaches the Columbia River and the Pacific Ocean.
The facility operates under the U.S. Clean Water Act, with NPDES permits issued by the Idaho Department of Environmental Quality. These permits set effluent limits to protect water quality.
For small communities like Grangeville, secondary treatment is standard under the Clean Water Act. This typically involves biological treatment to reduce organic matter and suspended solids before discharge.
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