COLEMAN WWTP - Advanced Wastewater Treatment in Coleman, Wisconsin

COLEMAN WWTP is a municipal wastewater treatment facility located in Coleman, Marinette County, Wisconsin. Serving a population of approximately 1,099, the plant provides advanced treatment to protect public health and the environment in this rural community. The plant employs advanced treatment processes, exceeding the secondary treatment standard required by the US Clean Water Act. With a designed capacity of 1,040.99 thousand gallons per day and an average discharge volume of 643.52 thousand gallons per day, it operates well within its capacity. As a US facility, it operates under an EPA NPDES permit issued by the Wisconsin Department of Natural Resources, which sets effluent limits to safeguard water quality. The treated effluent is discharged into local streams that flow into the Peshtigo River watershed, ultimately reaching Green Bay and Lake Michigan. This region supports diverse aquatic life and is part of the larger Great Lakes ecosystem, making proper treatment essential for maintaining water quality and ecological balance.

The plant discharges into tributaries of the Peshtigo River, which flows into Green Bay and then Lake Michigan. This watershed supports diverse aquatic species, including fish and macroinvertebrates, and is part of the ecologically significant Great Lakes basin. Advanced treatment helps reduce nutrient loading, protecting downstream habitats from eutrophication.