HOMEDALE STP Wastewater Treatment Plant, Homedale, Idaho

HOMEDALE STP is a municipal wastewater treatment facility located in Homedale, Idaho, serving a population of approximately 2,633 residents. The plant provides secondary treatment, a standard level for small communities in the United States, ensuring that effluent meets federal and state water quality standards before discharge. As a secondary treatment plant, HOMEDALE STP utilizes biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 1,703.43 cubic meters per day and currently treats an average daily flow of 787.37 cubic meters, indicating operational headroom. It operates under the regulatory framework of the U.S. Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Idaho Department of Environmental Quality. The treated effluent is discharged into local surface waters, which ultimately drain into the Snake River basin. The Snake River flows through southern Idaho and joins the Columbia River, supporting diverse aquatic life and agricultural irrigation. The plant's secondary treatment helps protect downstream water quality in this ecologically important watershed.

HOMEDALE STP discharges into local streams that are part of the Snake River basin. The Snake River flows through arid and semi-arid landscapes, supporting irrigation, recreation, and habitat for species such as salmon and steelhead. Downstream, the river joins the Columbia River, which empties into the Pacific Ocean. The plant's secondary treatment reduces organic pollutants and nutrients, helping to maintain water quality in this sensitive watershed.