HAUGHTON STP - Harahan, Louisiana Wastewater Treatment Plant

HAUGHTON STP is a municipal wastewater treatment facility located in Harahan, a suburb of New Orleans in Jefferson Parish, Louisiana. The plant serves a population of approximately 1,700 residents and operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal discharges. The plant provides secondary treatment, a biological process that removes organic matter and suspended solids. With a designed capacity of 605.66 cubic meters per day and an average daily discharge of 378.54 cubic meters per day, the facility operates below its design capacity. As a U.S. plant, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Louisiana Department of Environmental Quality, ensuring compliance with water quality standards. The treated effluent from HAUGHTON STP is discharged into a receiving water body that ultimately drains into the Mississippi River, which flows into the Gulf of Mexico. This downstream environment includes ecologically sensitive coastal wetlands and estuaries that support diverse aquatic life and are important for fisheries and migratory birds.

HAUGHTON STP discharges into a local waterway that flows into the Mississippi River, which empties into the Gulf of Mexico. The Gulf Coast region features extensive wetlands and estuaries that provide critical habitat for fish, shellfish, and migratory waterfowl. Nutrient loading from wastewater discharges can contribute to hypoxic zones in the Gulf, making treatment performance important for downstream water quality.