Carson City STP - Secondary Wastewater Treatment in Bloomer Township, Michigan

Carson City STP is a municipal wastewater treatment facility located in Bloomer Township, Montcalm County, Michigan. The plant serves a small population of 1,050 residents and provides secondary treatment, which is the minimum standard for municipal wastewater under the US Clean Water Act. The plant has a designed capacity of 1,022.06 megaliters and currently treats an annual discharge volume of 567.81 megaliters. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids before discharge. The plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged to a local water body, likely a tributary of the Grand River or the Maple River, which ultimately flows into Lake Michigan via the Grand River basin. This inland location reduces direct marine impact, but the plant's discharge contributes to the overall health of the Great Lakes ecosystem, which supports diverse aquatic life and recreational activities.

The plant discharges into a local stream within the Grand River watershed, which drains into Lake Michigan, part of the Great Lakes system. This region supports coldwater fisheries, including trout and salmon, and provides habitat for migratory waterfowl. The plant's secondary treatment helps reduce nutrient loading, which is critical to prevent algal blooms in the Great Lakes.