Winfield WWTP - Secondary Wastewater Treatment in Winfield, Iowa

Winfield WWTP is a municipal wastewater treatment facility located in Winfield, Henry County, Iowa. The plant serves a population of approximately 1,131 residents, classifying it as a small-scale facility under U.S. EPA guidelines. It is situated in the Midwestern United States, an area characterized by agricultural land use and a temperate climate. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant's designed capacity is 1,135.62 million gallons per year, and it currently treats an annual discharge volume of 264.98 million gallons, indicating significant available capacity. The treated effluent is discharged into a local receiving water body, which ultimately drains into the Mississippi River Basin. The Mississippi River is a major ecological and economic corridor, supporting diverse aquatic life and providing drinking water for millions. The plant's operations are regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, ensuring compliance with water quality standards to protect downstream environments.

Winfield WWTP discharges into a local waterway that flows into the Mississippi River Basin. The Mississippi River is a vital ecological corridor supporting diverse fish, bird, and plant species. The plant's secondary treatment helps reduce nutrient and organic pollutant loads, mitigating potential impacts on downstream aquatic ecosystems and the Gulf of Mexico, where nutrient pollution contributes to hypoxic zones.