Bowler STP Wastewater Treatment Plant, Town of Seneca, Wisconsin

Bowler STP is a municipal wastewater treatment plant located in the Town of Seneca, Shawano County, Wisconsin. It serves a small population of 351 residents, reflecting its role as a local facility for a rural community in the state. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater. Its designed capacity is 128.70 units, and it currently discharges 75.71 units, indicating operational headroom. The plant operates under the National Pollutant Discharge Elimination System (NPDES) permitting program, administered by the Wisconsin Department of Natural Resources, ensuring compliance with effluent limits. The treated effluent is discharged into a local waterway that drains into the Wolf River basin, ultimately reaching Lake Michigan via Green Bay. This watershed supports diverse aquatic life and recreational uses, making proper treatment essential for protecting downstream water quality.

The plant discharges into a tributary of the Wolf River, which flows into Green Bay and then Lake Michigan. This watershed is ecologically sensitive, supporting coldwater fisheries and migratory birds. The Wolf River is known for its walleye and smallmouth bass populations, and maintaining water quality is critical for these habitats.