MT CALVARY WWTP - Advanced Wastewater Treatment in Mount Calvary, Wisconsin

MT CALVARY WWTP is a wastewater treatment facility located in Mount Calvary, Fond du Lac County, Wisconsin. It serves a small community of approximately 1,123 residents, providing advanced treatment to protect local water quality. The plant is situated inland, more than 10 km from the coast, and its operations are part of the broader municipal infrastructure in the region. The facility employs advanced treatment processes, ensuring a high level of pollutant removal before discharge. With a designed capacity of 511.03 units and a current discharge volume of 412.61 units, the plant operates within its capacity. As a US-based plant, it falls under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits, which set effluent limits and monitoring requirements. The treated effluent is discharged into a local water body that eventually drains into the Lake Michigan basin. Lake Michigan is a vital freshwater resource supporting diverse aquatic life and providing drinking water for millions. The advanced treatment helps minimize nutrient loading and protect the lake's ecological health, particularly in the context of regional concerns over algal blooms and water quality.

The plant's discharge enters a tributary of the Lake Michigan watershed, ultimately reaching the lake itself. Lake Michigan is a large freshwater ecosystem that supports a variety of fish species and migratory birds. The advanced treatment reduces the risk of eutrophication and maintains water quality for downstream communities and recreational uses.