Thibodaux WWTP - Lafourche Parish, Louisiana Wastewater Treatment Plant

Thibodaux WWTP is a municipal wastewater treatment facility located in Lafourche Parish, Louisiana, serving a population of approximately 14,566. The plant is situated inland, more than 50 km from the Gulf Coast, and plays a key role in managing wastewater from the Thibodaux area. The plant operates under the US Clean Water Act, which requires secondary treatment for municipal facilities of this scale. NPDES permits issued by the Louisiana Department of Environmental Quality govern discharge limits and monitoring. The designed capacity is 1.00 million gallons per day, indicating a medium-sized facility. The treated effluent is discharged into local waterways that drain into the Gulf of Mexico via the Mississippi River delta system. The surrounding region includes bayous and wetlands that support diverse aquatic life, making proper treatment essential for protecting downstream ecosystems.

The plant discharges into the Bayou Lafourche watershed, which flows into the Gulf of Mexico. This region is part of the Mississippi River delta, characterized by extensive wetlands and estuarine habitats that support fish, shellfish, and migratory birds. Effective wastewater treatment is critical to prevent nutrient loading and maintain water quality in these sensitive coastal ecosystems.