CHATHAM POND Wastewater Treatment Plant, Chatham, Louisiana

CHATHAM POND is a wastewater treatment facility located on Front Street in Chatham, Jackson Parish, Louisiana. It serves a small population of 557 residents, reflecting its role as a municipal plant for a rural community in the northern part of the state. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 302.83 million gallons and an annual discharge volume of 264.98 million gallons, it operates at a utilization rate that suggests consistent demand. As a US facility, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The treated effluent is discharged 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, which is critical for mitigating hypoxia in the Gulf. Its inland location, over 50 km from the coast, reduces direct marine impact but still contributes to downstream water quality.

The plant discharges into the Ouachita River watershed, which flows south through Louisiana to the Mississippi River and into the Gulf of Mexico. This region supports diverse aquatic life and is part of a larger basin affected by nutrient pollution. Advanced treatment at this plant helps reduce nitrogen and phosphorus loads, contributing to the health of downstream ecosystems and the Gulf's hypoxic zone.