Oak Grove Heights WWTP: Advanced Wastewater Treatment in Arkansas

Oak Grove Heights WWTP serves the small community of Oak Grove Heights in Greene County, Arkansas. This advanced treatment facility handles wastewater from approximately 889 residents, reflecting its role in a rural setting within the Mississippi River Basin. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 283.91 million gallons per year and an annual discharge volume of 268.76 million gallons, it operates efficiently. As a U.S. facility, it is subject to the Clean Water Act and National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River, a major ecological and economic resource. The plant's advanced treatment helps safeguard downstream aquatic habitats and supports the river's role in regional biodiversity and water supply.

The plant discharges into tributaries of the Mississippi River, which flows into the Gulf of Mexico. This region is part of the Mississippi River Basin, a critical watershed supporting diverse aquatic life and migratory birds. Advanced treatment reduces nutrient loading, helping to mitigate the hypoxic zone in the Gulf.