PELL LAKE SD 1 STP - Advanced Wastewater Treatment in Village of Bloomfield, Wisconsin

PELL LAKE SD 1 STP is a municipal wastewater treatment facility located in Pell Lake, within the Village of Bloomfield, Walworth County, Wisconsin. The plant serves a population of approximately 2,675 residents and operates as part of the region's water infrastructure. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,741,280 gallons per day and an average daily flow of 719,230 gallons, the facility operates well below its capacity, indicating room for future growth. As a US plant, it operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into local waterways that drain into the Fox River basin, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant's advanced treatment helps reduce nutrient loading, which is critical for mitigating hypoxia in the Gulf of Mexico.

The plant discharges into the Fox River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. This region is part of the Mississippi River Basin, where nutrient pollution contributes to a large hypoxic zone in the Gulf. Advanced treatment at this plant helps reduce nitrogen and phosphorus loads, supporting downstream water quality and aquatic ecosystems.