High Hill WWTP - Secondary Treatment Plant in High Hill, Missouri

High Hill WWTP is a municipal wastewater treatment facility located in High Hill, Missouri, United States. The plant serves a small population of 195 residents, reflecting the rural character of the area. It operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges. The plant provides secondary treatment, a standard level that removes biodegradable organic matter and suspended solids. With a designed capacity of 113.56 units and an average daily discharge of 75.71 units, the facility operates below its maximum capacity. Secondary treatment typically involves biological processes such as activated sludge or trickling filters. The treated effluent is discharged into a local water body, which ultimately drains into the Missouri River watershed and then the Mississippi River. This downstream system supports diverse aquatic life and provides water for communities and agriculture. The plant's discharge is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program to protect water quality.

The plant discharges into a tributary of the Missouri River, which flows into the Mississippi River and eventually the Gulf of Mexico. The local watershed supports agricultural and natural habitats, and the plant's secondary treatment helps reduce nutrient and pollutant loads that could contribute to downstream eutrophication. The facility's small scale and inland location minimize direct marine impact.