Unadilla WWTP - Secondary Treatment Plant in Unadilla, Nebraska

Unadilla WWTP is a municipal wastewater treatment facility located in Unadilla, Nebraska, a small community in Otoe County. The plant serves a population of 342 residents and operates under the regulatory framework of the US Clean Water Act, which requires NPDES permits for all discharges. The plant provides secondary treatment, a standard level for small communities in the United States. Its designed capacity is 113.56 million gallons per day, matching the current discharge volume, indicating the plant operates at full capacity. As a small facility, it is subject to state-level oversight by the Nebraska Department of Environment and Energy. The treated effluent is discharged into local streams that eventually drain into the Missouri River watershed. This water body supports aquatic life and is used for recreation and agriculture downstream. The plant's operation helps protect water quality in the region.

The plant discharges into tributaries of the Missouri River, which flows into the Mississippi River and ultimately the Gulf of Mexico. The local watershed supports diverse aquatic species and is part of the larger Mississippi River basin, an important ecological corridor for migratory birds and fish. Protecting water quality here is vital for downstream ecosystems.