Stockbridge WWTP - Secondary Wastewater Treatment in Stockbridge Township, Michigan

Stockbridge WWTP is a municipal wastewater treatment facility located in Stockbridge Township, Ingham County, Michigan, United States. The plant serves a small community of approximately 1,163 residents, providing essential sanitation services for the local area. As a secondary treatment plant, it meets the standard requirements for organic matter and suspended solids removal under the U.S. Clean Water Act. The plant operates with a designed capacity of 662.45 volume units and currently handles a discharge volume of 264.98 volume units, indicating available treatment capacity. Under the National Pollutant Discharge Elimination System (NPDES), plants of this scale are typically permitted by the Michigan Department of Environment, Great Lakes, and Energy (EGLE), ensuring compliance with water quality standards. The treated effluent is discharged into local waterways that drain into the Great Lakes basin, specifically Lake Michigan or Lake Erie via the Grand River or Huron River systems. The plant plays a role in protecting downstream aquatic ecosystems and the Great Lakes, which are vital freshwater resources supporting diverse wildlife and regional water supply.

The plant discharges into the watershed of the Great Lakes, likely via the Portage River or a tributary of the Grand River, which flows into Lake Michigan. The Great Lakes ecosystem supports a wide range of aquatic life, including fish species such as lake trout and whitefish, and provides drinking water for millions. The secondary treatment helps reduce nutrient loading, which is critical to prevent algal blooms and maintain water quality in this sensitive freshwater system.