Harry S Truman State Park Wastewater Treatment Plant, Benton County, Missouri

Harry S Truman State Park wastewater treatment plant is located in Benton County, Missouri, United States. It serves a small population of 300 people, typical of a rural state park facility. The plant provides secondary treatment, which is the minimum standard required by the US Clean Water Act for municipal wastewater discharges. The plant has a designed capacity of 113.56 megaliters and discharges an equal volume annually, indicating full utilization. As a small facility, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids. The treated effluent is discharged into local waterways within the Osage River basin, which ultimately drains into the Missouri River and then the Mississippi River. The plant's location inland and away from coastal areas reduces direct marine impact, but its discharge contributes to the overall water quality of the region's freshwater ecosystems.

The plant discharges into the Osage River watershed, which flows into the Missouri River and eventually the Mississippi River. This inland basin supports diverse aquatic life and provides habitat for migratory fish species. The area is characterized by agricultural land use, and the plant's secondary treatment helps reduce nutrient loading that could contribute to downstream eutrophication in the Gulf of Mexico.