Winnebago WWTP: Secondary Treatment in Thurston County, Nebraska

Winnebago WWTP is a municipal wastewater treatment plant located in Thurston County, Nebraska, serving a small community of approximately 768 residents. The facility is situated in a rural area of the state, reflecting the scale of infrastructure typical for small agglomerations in the United States. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater facilities. With a designed capacity of 378.54 thousand cubic meters per year and a current discharge volume of 340.69 thousand cubic meters per year, the plant operates at a utilization rate consistent with its service population. As a US facility, it operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the Nebraska Department of Environment and Energy, ensuring compliance with federal water quality standards. The treated effluent from Winnebago WWTP is discharged into local streams that ultimately drain into the Missouri River basin. The Missouri River flows into the Mississippi River, which empties into the Gulf of Mexico. The plant plays a key role in protecting downstream water quality in this major river system, which supports diverse aquatic life and provides water for communities and agriculture across the central United States.

Winnebago WWTP discharges into tributaries of the Missouri River, which flows into the Mississippi River and then the Gulf of Mexico. This watershed supports a variety of aquatic species, including freshwater mussels and fish, and is an important migratory corridor for birds. The plant's secondary treatment helps reduce nutrient and organic pollutant loads, mitigating eutrophication risks in downstream waters.