D LO POTW - D'Lo, Mississippi Wastewater Treatment Plant

D LO POTW is a municipal wastewater treatment plant located in D'Lo, Simpson County, Mississippi, United States. The facility serves a small population of 468 residents and operates under secondary treatment, which is the standard level for domestic wastewater in the United States under the Clean Water Act. The plant's designed capacity is 605.66 million gallons per year, with an actual discharge volume of 113.56 million gallons per year, indicating it operates well below capacity. As a US facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Mississippi Department of Environmental Quality, which set effluent limits to protect water quality. The treated effluent from D LO POTW is discharged into a local water body that ultimately drains into the Pearl River basin, which flows south to the Gulf of Mexico. The plant's location inland and its small service area reduce its environmental footprint, but proper treatment remains essential to protect downstream aquatic ecosystems.

D LO POTW discharges into a tributary of the Pearl River, which flows through central Mississippi and Louisiana before emptying into the Gulf of Mexico near the Mississippi River Delta. The Pearl River supports diverse aquatic life, including fish and mussel species, and its estuary provides critical habitat for migratory birds and marine organisms. The plant's secondary treatment helps reduce organic pollutants and suspended solids, protecting water quality in this ecologically sensitive watershed.