Gravel Ridge SID 213 WWTP - Jacksonville, Arkansas Advanced Wastewater Treatment

Gravel Ridge SID 213 WWTP is a municipal wastewater treatment facility located in Jacksonville, Arkansas, within the Gravel Ridge area. It serves a population of approximately 3,232 residents, classifying it as a small-scale treatment plant under U.S. EPA guidelines. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. This level of treatment is typical for facilities discharging to sensitive water bodies or subject to stringent state permits. The plant's designed capacity is 1,608.80 million gallons per year, with an actual discharge volume of 405.04 million gallons per year, indicating operational headroom. The treated effluent is discharged into local waterways that ultimately drain into the Arkansas River, a major tributary of the Mississippi River. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports water quality goals in the Mississippi River Basin.

The plant discharges into receiving waters that flow into the Arkansas River, which joins the Mississippi River before reaching the Gulf of Mexico. The watershed supports diverse aquatic life and is important for regional water quality. Advanced treatment at this plant reduces nutrient loading, helping to mitigate hypoxia in the Gulf of Mexico.