HAWN STATE PARK Wastewater Treatment Plant, Ste. Genevieve County, Missouri

HAWN STATE PARK is a wastewater treatment plant located in Ste. Genevieve County, Missouri, United States. It serves a small population of 100 people, typical of a state park facility. The plant operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal wastewater discharges. The plant provides secondary treatment, a standard level that removes biodegradable organic matter and suspended solids. It has a designed capacity of 37.85 cubic meters per day and discharges a similar volume of treated wastewater. As a small facility, it is subject to EPA NPDES permitting, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body, likely a stream or river within the Mississippi River basin. The plant's operations help protect downstream aquatic ecosystems and maintain water quality for recreational use in the park.

The plant discharges into a local water body that drains into the Mississippi River system, ultimately reaching the Gulf of Mexico. The surrounding area includes forested hills and agricultural land, and the plant's secondary treatment helps reduce nutrient loading that could contribute to hypoxia in the Gulf. The park setting emphasizes the importance of maintaining clean water for wildlife and visitors.