Fredricksburg WWTP - Secondary Treatment Plant in Chickasaw County, Iowa

Fredricksburg WWTP is a municipal wastewater treatment facility located in Chickasaw County, Iowa, United States. The plant serves a small population of 931 residents, providing secondary treatment to meet Clean Water Act standards. The plant operates under the US EPA National Pollutant Discharge Elimination System (NPDES) permitting program, which sets effluent limits for secondary treatment facilities. With a designed capacity of 1097.77 cubic meters per day and an average discharge volume of 946.35 cubic meters per day, the plant operates at approximately 86% capacity. The treated effluent is discharged into local waterways that drain into the Upper Mississippi River basin. The plant plays a key role in protecting downstream water quality in the region's agricultural landscape, supporting aquatic life and recreational uses.

The plant discharges into tributaries of the Upper Mississippi River, which flows south to the Gulf of Mexico. The local watershed is primarily agricultural, and the plant helps reduce nutrient loading that could contribute to hypoxia in the Gulf. The facility supports the ecological health of small streams and rivers in the region.