Farmerville STP Wastewater Treatment Plant, Farmerville, Louisiana

Farmerville STP is a municipal wastewater treatment facility located in Farmerville, Union Parish, Louisiana, serving a population of approximately 3,334 residents. The plant is situated in the northern part of the state, near the border with Arkansas, and is part of the region's rural wastewater infrastructure. As a small-scale facility in the United States, Farmerville STP is subject to the National Pollutant Discharge Elimination System (NPDES) permitting program under the Clean Water Act. For communities of this size, secondary treatment is typically required to meet effluent limits for biochemical oxygen demand and total suspended solids. The plant's design and operation are overseen by state regulatory authorities to ensure compliance with water quality standards. The treated effluent from Farmerville STP is discharged into local waterways that ultimately drain into the Ouachita River basin. The Ouachita River flows south through Louisiana, joining the Red River and eventually reaching the Mississippi River and the Gulf of Mexico. This watershed supports diverse aquatic life and provides water resources for communities and ecosystems in the region.

The plant discharges into the Ouachita River basin, which drains into the Mississippi River and the Gulf of Mexico. This watershed supports a variety of fish and wildlife, including species dependent on healthy water quality. The region's wetlands and floodplains play a key role in nutrient cycling and flood control, making proper wastewater treatment essential for maintaining ecological balance.