Maribel WWTP - Advanced Wastewater Treatment in Maribel, Wisconsin

Maribel WWTP is a municipal wastewater treatment facility located in Maribel, Wisconsin, United States. The plant serves a small population of 349 residents, reflecting its role in a rural community within Manitowoc County. As an advanced treatment plant, it provides a high level of wastewater purification, exceeding the secondary treatment standards typically required for smaller agglomerations under the US Clean Water Act. The plant operates with a designed capacity of 105.99 units and a current discharge volume of 75.71 units, indicating it is operating below its full capacity. The advanced treatment level suggests the use of tertiary processes such as filtration or nutrient removal to meet stringent effluent quality standards. The facility is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets limits on pollutant discharges to protect water quality. The treated effluent from Maribel WWTP is discharged into a local water body, likely a stream or river within the Lake Michigan basin. The plant's location more than 10 km from the coast but within 50 km means its discharge ultimately contributes to the Great Lakes ecosystem. The advanced treatment helps minimize nutrient loading and protects downstream aquatic habitats, including those supporting diverse fish and invertebrate communities.

Maribel WWTP discharges into a local water body that drains into the Lake Michigan basin, part of the larger Great Lakes system. The Great Lakes are a critical freshwater resource supporting diverse aquatic life, including native fish species and migratory birds. The plant's advanced treatment reduces nutrient and pollutant loads, helping to prevent eutrophication and maintain water quality in downstream rivers and ultimately Lake Michigan.