LINWOOD SUBDIVISION Wastewater Treatment Plant, St. Landry Parish, Louisiana

LINWOOD SUBDIVISION is a municipal wastewater treatment plant located in St. Landry Parish, Louisiana, serving a small community of approximately 700 residents. The facility operates under the regulatory framework of the US Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all point source discharges. The plant provides secondary treatment, a biological process that removes biodegradable organic matter and suspended solids. With a designed capacity of 276.33 cubic meters per day and an average daily flow of 227.13 cubic meters, the facility operates at about 82% capacity, indicating adequate headroom for current demand. The treated effluent is discharged into local surface waters that drain into the Atchafalaya River basin, eventually reaching the Gulf of Mexico. This region supports diverse aquatic life and is part of a larger wetland ecosystem that provides critical habitat for fish, birds, and other wildlife.

The plant's discharge enters the Atchafalaya River basin, a major distributary of the Mississippi River that flows into the Gulf of Mexico. This watershed includes extensive swamps and wetlands that provide natural water filtration and flood control. The area supports a variety of fish species, migratory waterfowl, and alligators, making proper wastewater treatment essential to maintaining water quality and ecosystem health.