Mud Lake STP - Secondary Wastewater Treatment in Jefferson County, Idaho

Mud Lake STP is a wastewater treatment plant located in Jefferson County, Idaho, United States. It serves a small population of 480 residents, reflecting its role in a rural community. The plant is situated inland, far from coastal waters, and its operations are governed by the Clean Water Act through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant provides secondary treatment, which is the standard level required by the Clean Water Act for municipal wastewater facilities. With a designed capacity of 219.55 million gallons per year and an actual discharge volume of 162.77 million gallons per year, the plant operates below its capacity, indicating adequate headroom for current demand. 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 stream or canal that drains into the Snake River basin, which ultimately flows to the Columbia River and the Pacific Ocean. The plant's operations help protect local water quality and support the ecological health of the surrounding watershed, which includes agricultural lands and wildlife habitats.

The plant discharges into a local water body within the Snake River basin, which flows into the Columbia River and eventually the Pacific Ocean. The surrounding watershed supports agricultural irrigation and provides habitat for fish and wildlife. The plant's secondary treatment helps reduce nutrient loading and protect downstream water quality in this semi-arid region.