OWOSSO WWTP - Municipal Wastewater Treatment in Owosso Charter Township, Michigan

OWOSSO WWTP is a municipal wastewater treatment facility located in Owosso Charter Township, Shiawassee County, Michigan. It serves a population of approximately 23,506 people, placing it in the medium-agglomeration category for US wastewater infrastructure. Under the US Clean Water Act, plants of this scale are typically required to meet secondary treatment standards through National Pollutant Discharge Elimination System (NPDES) permits issued by the Michigan Department of Environment, Great Lakes, and Energy (EGLE). These permits set effluent limits to protect receiving water quality. The plant's treated effluent discharges into the Shiawassee River watershed, which flows into the Saginaw River and ultimately into Saginaw Bay of Lake Huron. This drainage basin supports diverse aquatic life and is part of the larger Great Lakes ecosystem, a critical freshwater resource.

The plant discharges into the Shiawassee River, a tributary of the Saginaw River, which flows into Saginaw Bay on Lake Huron. This watershed is part of the Great Lakes Basin, the world's largest freshwater system. The receiving waters support diverse fish populations and provide habitat for migratory waterfowl. Protecting water quality in this system is essential for maintaining the ecological health of the Great Lakes.