OTISVILLE LAGOON CS Wastewater Treatment Plant, Genesee County, Michigan

OTISVILLE LAGOON CS is a municipal wastewater treatment facility located on North Gale Road in Genesee County, Michigan. Serving a small population of 712 residents, the plant provides advanced treatment to protect local water quality. Its location in a rural area of the Great Lakes region influences its operational and environmental context. The plant employs advanced treatment processes, meeting or exceeding the secondary treatment standards required under the US Clean Water Act. With a designed capacity of 264.98 million gallons per year and a discharge volume matching that figure, the facility operates at full capacity. As a small agglomeration, it is subject to EPA NPDES permitting, which ensures compliance with effluent limits tailored to the receiving water body. The treated effluent is discharged into a local waterway that ultimately drains into the Lake Huron basin, part of the larger Great Lakes system. This watershed supports diverse aquatic life and provides drinking water for millions. The plant's advanced treatment helps minimize nutrient loading and protects downstream ecosystems, including important fish habitats and recreational waters.

The plant discharges into a tributary of the Flint River, which flows into the Saginaw River and then into Saginaw Bay, part of Lake Huron. This watershed is ecologically sensitive, supporting diverse fish species and migratory birds. Advanced treatment reduces phosphorus and nitrogen loads, helping to prevent algal blooms in the Great Lakes.