Overview
OMAK STP serves Omak, Washington, treating wastewater for approximately 4,728 residents. The plant operates under the U.S. Clean Water Act framework, with state-level NPDES permitting ensuring environmental compliance.
OMAK STP is a municipal wastewater treatment plant located in Omak, Okanogan County, Washington. Serving a population of about 4,728, the facility is part of the region's essential water infrastructure, handling domestic wastewater from the community. As a U.S. plant of this scale, OMAK STP operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Washington State Department of Ecology. These permits set effluent limits to protect water quality, typically requiring secondary treatment for municipal plants serving populations of this size. The plant's treated effluent is discharged into the local watershed, which drains into the Okanogan River, a tributary of the Columbia River. The Columbia River system supports diverse aquatic life and is a critical resource for the Pacific Northwest, including salmon runs and regional water supply.
Environmental context
The plant discharges into the Okanogan River basin, which flows into the Columbia River, ultimately reaching the Pacific Ocean. The Okanogan River supports important fish species such as steelhead and Chinook salmon. The semi-arid climate of the region makes water quality management crucial for maintaining aquatic habitats and agricultural water use downstream.
Frequently asked questions
OMAK STP is located at 665 Ridge Drive South, Omak, Okanogan County, Washington, United States.
The plant serves approximately 4,728 residents in the Omak area.
The plant discharges treated effluent into the local watershed, which drains into the Okanogan River, a tributary of the Columbia River.
OMAK STP operates under the U.S. Clean Water Act, with NPDES permits issued by the Washington State Department of Ecology, which set effluent limits to protect water quality.
Plants of this scale in the U.S. typically provide secondary treatment, which includes biological processes to reduce organic matter and suspended solids, as required by the Clean Water Act.
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