Oak Park CD Wastewater Treatment Plant, Clark County, Indiana

Oak Park CD is a wastewater treatment facility located on Island View Drive in Clark County, Indiana, serving a population of 6,200. The plant is part of the municipal wastewater infrastructure for the area, treating domestic wastewater from the community. As a US facility serving fewer than 10,000 people, Oak Park CD is classified as a small publicly owned treatment works (POTW) under the Clean Water Act. Such plants typically require secondary treatment as a minimum standard, with NPDES permits issued by the Indiana Department of Environmental Management to regulate discharges and ensure compliance with water quality standards. The plant discharges treated effluent into the Ohio River watershed, which ultimately drains into the Mississippi River and the Gulf of Mexico. The Ohio River supports diverse aquatic life and serves as a major drinking water source for downstream communities. Proper treatment at plants like Oak Park CD helps protect water quality in this ecologically and economically important river system.

The plant discharges into the Ohio River basin, a major tributary of the Mississippi River that flows into the Gulf of Mexico. The Ohio River supports a variety of fish species and provides habitat for migratory birds. Downstream, the Mississippi River delta is an ecologically sensitive area that benefits from reduced nutrient loads from upstream treatment plants.