COLFAX STP - Advanced Wastewater Treatment in Colfax, Louisiana

COLFAX STP is a wastewater treatment facility located on Eleanor Street in Colfax, Grant Parish, Louisiana. The plant serves a small community of about 1,600 people, providing essential sanitation services for this rural area in the central part of the state. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a design capacity of 2,271.24 cubic meters per day and an average daily discharge of 681.37 cubic meters, the facility operates well within its capacity. As a US plant, it operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Louisiana Department of Environmental Quality, ensuring compliance with federal water quality standards. The treated effluent is discharged into a local water body that ultimately drains into the Red River, a major tributary of the Mississippi River. The Red River basin supports diverse aquatic life and provides water for agriculture and recreation. By maintaining advanced treatment, COLFAX STP helps protect downstream water quality in the Mississippi River system and the Gulf of Mexico.

The plant discharges into a local watercourse that flows into the Red River, which joins the Mississippi River before reaching the Gulf of Mexico. The Red River basin is ecologically significant, supporting fish species such as catfish and bass, and providing habitat for migratory birds. Advanced treatment at this plant helps reduce nutrient loading, which is critical for mitigating hypoxia in the Gulf of Mexico.