ASHTON SEWAGE TREAT FAC - Fremont County, Idaho Wastewater Treatment Plant

ASHTON SEWAGE TREAT FAC is a municipal wastewater treatment plant located in Fremont County, Idaho, United States. It serves a small community of approximately 1,127 residents, providing secondary treatment to manage domestic wastewater. The plant's designed capacity is 1,059.91 million gallons per year, with an actual discharge volume of 529.96 million gallons per year. As a secondary treatment facility, the plant meets the minimum requirements under the U.S. Clean Water Act for municipal wastewater treatment. The National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Idaho Department of Environmental Quality, governs its discharge. For small agglomerations like this, secondary treatment is standard to reduce organic pollutants and suspended solids. The plant discharges into local waterways that ultimately drain into the Snake River basin, a major tributary of the Columbia River. The Snake River supports diverse aquatic life and is an important migratory corridor for salmon and steelhead. The plant's operations help protect downstream water quality in this ecologically significant watershed.

The plant discharges into the Snake River basin, which flows into the Columbia River and eventually the Pacific Ocean. This watershed supports critical habitats for native fish species, including salmon and steelhead, and provides irrigation water for agriculture in the region. The plant's secondary treatment helps reduce nutrient loading and protect downstream ecosystems.