MANGHAM POND Wastewater Treatment Plant, Richland Parish, Louisiana

MANGHAM POND is a wastewater treatment facility located in Richland Parish, Louisiana, United States. The plant serves a small population of 665 residents, providing advanced treatment to protect local water quality. Its location in the rural Mississippi Delta region places it within a network of small-scale municipal systems that manage wastewater for dispersed communities. The plant operates with advanced treatment processes, which go beyond the secondary treatment standard required by the US Clean Water Act. With a designed capacity of 359.61 megaliters and an annual discharge volume of 227.13 megaliters, the facility operates below its capacity, indicating room for future growth. As a US facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Louisiana Department of Environmental Quality, which set effluent limits to protect receiving waters. The treated effluent from MANGHAM POND likely discharges into local waterways that drain into the Ouachita River basin, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant's advanced treatment helps reduce nutrient loading and other pollutants, supporting the ecological health of downstream aquatic habitats and the broader Mississippi River watershed.

The plant's discharge enters local streams within the Ouachita River basin, which flows into the Mississippi River and eventually the Gulf of Mexico. This watershed supports diverse aquatic life, including fish and migratory birds, and is part of a larger delta ecosystem sensitive to nutrient pollution. Advanced treatment at this facility helps mitigate eutrophication risks in downstream water bodies.