VIOLA ST FACILITIES - Secondary Wastewater Treatment in Viola, Idaho

VIOLA ST FACILITIES is a municipal wastewater treatment plant located in Viola, Latah County, Idaho, United States. The plant serves a small population of around 125 residents, reflecting its role in a rural community. It operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges to protect water quality. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. Its designed capacity is 34.07 volume units, with a similar discharge volume, indicating consistent operation. As a small facility, it is subject to state-level NPDES permits that ensure compliance with effluent limits. The treated effluent is discharged into the local watershed, which drains into the Palouse River and eventually the Snake River, a major tributary of the Columbia River. This waterway supports diverse aquatic life and agricultural activities in the region. The plant's location inland, away from coastal areas, reduces direct marine impact but emphasizes the importance of protecting freshwater ecosystems.

The plant discharges into the Palouse River basin, which flows into the Snake River and then the Columbia River, ultimately reaching the Pacific Ocean. This watershed supports critical habitats for salmon and steelhead, as well as agricultural irrigation. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream water quality and aquatic biodiversity.