Centreville Lagoon Wastewater Treatment Plant, Nottawa Township, Michigan

Centreville Lagoon is a municipal wastewater treatment plant located in Nottawa Township, St. Joseph County, Michigan, United States. The facility serves a small population of around 1,530 residents, reflecting its role as a local treatment solution for this rural community. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater facilities. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The plant's designed capacity is 492.10 volume units, with an actual discharge volume of 454.25 volume units, indicating operational activity within its capacity. The treated effluent from Centreville Lagoon is discharged into local waterways that are part of the St. Joseph River watershed, which ultimately drains into Lake Michigan. This connection to the Great Lakes ecosystem underscores the importance of effective treatment to protect water quality and aquatic life in the region.

The plant discharges into the St. Joseph River watershed, which flows into Lake Michigan, a vital freshwater resource supporting diverse aquatic ecosystems and recreational activities. The surrounding area is primarily agricultural and rural, making the plant's role in nutrient removal critical to prevent eutrophication in downstream waters.