Troy S_T Facility Wastewater Treatment Plant, Troy, Idaho

The Troy S_T Facility is a municipal wastewater treatment plant located in Troy, Idaho, United States. It serves a population of approximately 862 residents, classifying it as a small-scale facility within the region's wastewater infrastructure. The plant is situated in Latah County, near the Latah Trail, and operates under the regulatory framework of the U.S. Clean Water Act. The plant provides secondary treatment, which is the standard level required for most municipal facilities under the National Pollutant Discharge Elimination System (NPDES) permit program. With a designed capacity of 567.81 m³/day and an average daily discharge of 378.54 m³/day, the plant operates below its maximum capacity, indicating room for future growth or seasonal variations. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into a local water body, likely a tributary of the Palouse River or the Potlatch River, which ultimately drains into the Snake River and then the Columbia River system. This watershed supports agricultural activities and diverse aquatic habitats, making proper treatment essential for protecting downstream water quality and ecological health.

The plant's discharge enters a local stream within the Palouse River basin, which flows into the Snake River and eventually the Columbia River, reaching the Pacific Ocean. This watershed supports salmonid species and other aquatic life, requiring effective nutrient and pollutant removal to prevent eutrophication and habitat degradation. The region's agricultural land use increases the importance of managing wastewater to minimize impacts on water quality.