Arcadia Sewerage System Wastewater Treatment Plant, Bienville Parish, Louisiana

Arcadia Sewerage System is a municipal wastewater treatment plant located in Bienville Parish, Louisiana, serving a population of about 6,000. The facility is situated inland, away from coastal areas, and discharges into local waterways that eventually drain into the Mississippi River basin. As a U.S. wastewater treatment plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Louisiana Department of Environmental Quality. For a plant serving approximately 6,000 people, secondary treatment is typically required to meet effluent standards for biochemical oxygen demand and total suspended solids. The treated effluent from the plant flows into nearby streams and rivers within the Red River watershed, which ultimately drains into the Mississippi River and the Gulf of Mexico. The plant plays a role in protecting local water quality and the downstream aquatic ecosystem.

The plant discharges into the Red River watershed, which flows into the Mississippi River and then the Gulf of Mexico. This region supports diverse aquatic life, including fish and migratory birds. The plant's treatment helps reduce nutrient and pollutant loads that could contribute to hypoxia in the Gulf of Mexico.