Smackover WWTP - Advanced Wastewater Treatment in Smackover, Arkansas

Smackover WWTP is an advanced wastewater treatment facility located in Smackover, Union County, Arkansas. Serving a population of 1,865, the plant is part of the municipal infrastructure for this small community in 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 1,892.70 megaliters and an annual discharge volume of 473.18 megaliters, the facility operates well within its capacity. As a US plant, it is regulated under the Clean Water Act through an EPA NPDES permit issued by the Arkansas Department of Energy and Environment. The treated effluent is discharged into a local waterway that ultimately drains into the Ouachita River basin, contributing to the Mississippi River watershed. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports water quality in the region.

The plant discharges into a tributary of the Ouachita River, which flows into the Mississippi River and eventually the Gulf of Mexico. The Ouachita River supports diverse aquatic life, including several fish species and freshwater mussels. Advanced treatment at this facility reduces nutrient loading, helping to mitigate hypoxia in the Gulf of Mexico.