Mendenhall POTW - Municipal Wastewater Treatment in Mendenhall, Mississippi

Mendenhall POTW is a municipal wastewater treatment plant located in Mendenhall, Simpson County, Mississippi. It serves a population of about 2,600 people, making it a small-scale facility typical of rural communities in the southeastern United States. The plant is situated on Dixie Avenue and operates within the framework of the US Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all point source discharges. Plants of this scale in Mississippi commonly employ secondary treatment, such as activated sludge or lagoon systems, to meet state and federal effluent standards. Its population equivalent suggests a moderate capacity. Regulatory oversight is provided by the Mississippi Department of Environmental Quality (MDEQ) under delegated EPA authority. The plant's treated effluent likely discharges to a local waterway within the Pearl River basin, which ultimately flows into the Gulf of Mexico. The receiving water body supports aquatic life and is part of a watershed that includes sensitive coastal ecosystems. Proper treatment helps protect downstream water quality and the ecological health of the Gulf region.

Mendenhall POTW discharges into a tributary of the Pearl River, which flows south through Mississippi and Louisiana before emptying into the Gulf of Mexico. The Pearl River basin supports diverse aquatic habitats, including wetlands and estuarine zones near the coast. The plant's operations are critical for maintaining water quality in this watershed, which is used for recreation, fishing, and as a drinking water source downstream.