Wilmar WWTP - Advanced Wastewater Treatment in Wilmar, Arkansas

Wilmar WWTP is a municipal wastewater treatment facility located in Wilmar, Drew County, Arkansas. Serving a small population of 511 residents, the plant provides advanced treatment to protect local water quality in this rural region of the southern United States. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 378.54 megaliters and an annual discharge volume of 151.42 megaliters, the facility operates under the US Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all point source discharges. The Arkansas Department of Energy and Environment - Division of Environmental Quality typically issues these permits, ensuring compliance with water quality standards. The treated effluent is discharged into a local water body that drains into the Mississippi River Basin, ultimately reaching the Gulf of Mexico. The plant's advanced treatment helps reduce nutrient loading, which is critical for mitigating the hypoxic zone in the Gulf. By maintaining high treatment standards, Wilmar WWTP supports the ecological health of downstream aquatic habitats.

Wilmar WWTP discharges into a receiving water body within the Mississippi River Basin, which flows into the Gulf of Mexico. This region is part of the Lower Mississippi River watershed, characterized by agricultural runoff and nutrient-sensitive ecosystems. The plant's advanced treatment reduces nitrogen and phosphorus loads, helping to protect downstream aquatic life and mitigate the seasonal hypoxic zone in the Gulf of Mexico.