Lewistown Pond Wastewater Treatment Plant, Raceland, Louisiana

Lewistown Pond is a municipal wastewater treatment facility located in Raceland, Lafourche Parish, Louisiana. The plant serves a small population of 450 residents, reflecting its role in a rural or suburban community within the Mississippi River Delta region. As a secondary treatment plant, it meets the standard required by the US Clean Water Act for municipal wastewater facilities. The plant has a designed capacity of 170.34 cubic meters per day and currently discharges an average of 151.42 cubic meters per day, indicating it operates below its full capacity. Such facilities are typically regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Louisiana Department of Environmental Quality. The treated effluent is discharged into local waterways that ultimately drain into the Gulf of Mexico via the Mississippi River Delta. This region supports diverse aquatic ecosystems, including estuarine habitats critical for fish and shellfish. The plant's secondary treatment helps reduce nutrient loads and organic pollutants, contributing to the health of downstream waters.

The plant discharges into the Bayou Lafourche watershed, which flows into the Gulf of Mexico. This area is part of the Mississippi River Delta, a highly productive estuarine system that supports commercial fisheries and migratory bird populations. Secondary treatment reduces biochemical oxygen demand and suspended solids, helping to protect sensitive coastal habitats from eutrophication and hypoxia.