Overview
COLEMAN WWSL is a secondary treatment plant in Coleman, Michigan, serving 1,235 people. It discharges 492.10 ML/year and operates under US EPA NPDES regulations.
COLEMAN WWSL is a municipal wastewater treatment plant located in Coleman, Michigan, United States. The facility serves a population of approximately 1,235 residents in this small Midland County community. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids from wastewater before discharge. The plant has a designed capacity of 605.66 ML/year and currently treats an average discharge volume of 492.10 ML/year. As a US facility, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permit requirements, which set effluent limits to protect water quality. Secondary treatment is the standard minimum for municipal plants in the US, ensuring compliance with federal regulations. The treated effluent is discharged to a local water body, ultimately contributing to the Saginaw Bay watershed and Lake Huron. This inland location, over 50 km from the coast, reduces direct marine impact. The plant plays a key role in protecting local streams and groundwater from untreated sewage, supporting aquatic life and recreational uses in the region.
Environmental context
COLEMAN WWSL discharges to a receiving water body within the Saginaw River basin, which flows into Saginaw Bay and then Lake Huron. This watershed supports diverse aquatic habitats, including fish spawning areas and migratory bird routes. The plant's secondary treatment helps reduce nutrient loading and oxygen-demanding pollutants, protecting downstream ecosystems from eutrophication and maintaining water quality for wildlife and human use.
Frequently asked questions
COLEMAN WWSL is located at 997 Graham Road, Coleman, Michigan, United States, in Midland County.
The plant serves approximately 1,235 residents in the Coleman area.
The plant discharges treated effluent to a local water body within the Saginaw River basin, which ultimately flows into Saginaw Bay and Lake Huron.
COLEMAN WWSL provides secondary treatment, which includes biological processes to remove organic matter and suspended solids, meeting US Clean Water Act standards.
As a US municipal plant, COLEMAN WWSL operates under the Clean Water Act and is required to have an NPDES permit that sets effluent limits to protect water quality. Secondary treatment is the federal minimum for such facilities.
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