SUPERIOR VILLAGE STP - Advanced Wastewater Treatment in Village of Superior, Wisconsin

SUPERIOR VILLAGE STP is a municipal wastewater treatment facility located in the Village of Superior, Douglas County, Wisconsin, United States. The plant serves a small population of 528 residents and operates with an advanced treatment level, ensuring high-quality effluent before discharge. With a designed capacity of 329.33 m³/day and an actual discharge volume of 189.27 m³/day, the plant operates below its capacity. As a US facility, it is regulated under the Clean Water Act and likely operates under an NPDES permit issued by the Wisconsin Department of Natural Resources, which sets effluent limits to protect water quality. The plant's treated effluent is discharged into a water body that ultimately flows into Lake Superior, the largest of the Great Lakes. The surrounding watershed supports diverse aquatic life and is ecologically sensitive due to the lake's cold, deep waters and unique fish species. The plant's advanced treatment helps minimize nutrient and pollutant loading to this important freshwater ecosystem.

The plant discharges into a tributary of the St. Louis River, which flows into Lake Superior near the western tip of the lake. Lake Superior is a vast, oligotrophic freshwater ecosystem with low nutrient levels, supporting species like lake trout and whitefish. The advanced treatment at this plant helps protect the lake's water quality by reducing phosphorus and other pollutants that could cause algal blooms or degrade habitat.