Loreauville STP - Advanced Wastewater Treatment in Loreauville, Louisiana

Loreauville STP is a municipal wastewater treatment facility located in Loreauville, Iberia Parish, Louisiana. Serving a population of 811, the plant provides advanced treatment to protect local water quality in the Bayou Teche watershed. The plant employs advanced treatment processes, meeting standards beyond secondary treatment. With a designed capacity of 719.23 thousand cubic meters and an annual discharge volume of 264.98 thousand cubic meters, it operates under the US Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Louisiana Department of Environmental Quality. Treated effluent from the plant flows into Bayou Teche, a distributary of the Atchafalaya River, which ultimately drains into the Gulf of Mexico. The plant plays a key role in protecting the ecologically sensitive Atchafalaya Basin, the largest swamp in the United States, which supports diverse aquatic life and migratory birds.

The plant discharges into Bayou Teche, which flows into the Atchafalaya River and then the Gulf of Mexico. The Atchafalaya Basin is a vast floodplain swamp that provides critical habitat for fish, shellfish, and waterfowl. Advanced treatment helps reduce nutrient loading, protecting this ecologically sensitive area from eutrophication and hypoxia.