ROSWELL LSAS Wastewater Treatment Plant, Roswell, Idaho

ROSWELL LSAS is a municipal wastewater treatment facility located on Highway 18 in Roswell, Canyon County, Idaho. The plant serves a small population of 117 residents, reflecting the rural character of the area. As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. The National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Idaho Department of Environmental Quality, governs its discharge. For small communities like Roswell, secondary treatment is the standard to protect water quality. The treated effluent is discharged into the local watershed, which drains into the Snake River basin and ultimately the Columbia River. The Snake River supports diverse aquatic life and is an important migratory corridor for salmon and steelhead. The plant's operation helps maintain water quality in this ecologically significant river system.

The plant discharges into the Snake River basin, which flows into the Columbia River and then to the Pacific Ocean. The Snake River supports a variety of fish species, including salmon and steelhead, and provides habitat for wildlife along its banks. The plant's secondary treatment helps protect downstream water quality in this important river system.