Meramec State Park Wastewater Treatment Plant, Franklin County, Missouri

Meramec State Park wastewater treatment plant is located in Franklin County, Missouri, United States. It serves a small population of 426 people, typical of a park facility. The plant operates under secondary treatment, which is the standard for many small-scale facilities in the US. The plant has a designed capacity of 310.40 units and currently discharges 75.71 units of treated wastewater. As a US facility, it operates under the Clean Water Act, which requires secondary treatment for municipal wastewater. The National Pollutant Discharge Elimination System (NPDES) permits regulate such discharges to ensure environmental protection. The treated effluent is discharged into a local water body, which ultimately drains into the Meramec River basin. The Meramec River is a major tributary of the Mississippi River, supporting diverse aquatic life and recreational activities. The plant's secondary treatment helps reduce pollutants before discharge, protecting downstream water quality.

The plant discharges into a local stream within the Meramec River watershed, which flows into the Mississippi River and eventually the Gulf of Mexico. The Meramec River supports diverse aquatic species and is an important recreational resource. Secondary treatment reduces organic pollutants and suspended solids, helping maintain the ecological health of the receiving water body.