ST MARY PARIS WESTERN PROJECT WCTS, Four Corners

Overview

ST MARY PARIS WESTERN PROJECT WCTS is an advanced wastewater treatment plant in Four Corners, Louisiana, serving 1,100 people. It discharges 378.54 cubic meters daily into the local watershed near the Gulf Coast.

ST MARY PARIS WESTERN PROJECT WCTS is a municipal wastewater treatment facility located at 607 Cypremort Road in Four Corners, St. Mary Parish, Louisiana. The plant serves a population of approximately 1,100 residents and operates with an advanced treatment level, reflecting a commitment to high effluent quality standards. The plant has a designed capacity of 605.66 cubic meters per day and currently discharges 378.54 cubic meters of treated wastewater daily. As a facility in the United States, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permit requirements, which set limits on pollutant discharges to protect water quality. The treated effluent is discharged into the local watershed, which ultimately drains into the Gulf of Mexico via the Atchafalaya River or nearby coastal estuaries. The plant's proximity to the coast (within 10 km) underscores the importance of advanced treatment to minimize nutrient and pollutant loading in sensitive coastal ecosystems.

Environmental context

The plant discharges into the lower Mississippi River basin, with its treated effluent flowing through local bayous and canals before reaching the Gulf of Mexico. This coastal region supports diverse aquatic life, including important fisheries and migratory bird habitats. Advanced treatment helps reduce nutrient enrichment that could contribute to hypoxic zones in the Gulf.

Frequently asked questions

The plant is located at 607 Cypremort Road in Four Corners, St. Mary Parish, Louisiana, United States.

The plant serves approximately 1,100 residents in the Four Corners area.

The plant discharges treated wastewater into the local watershed, which flows through bayous and canals toward the Gulf of Mexico.

As a U.S. facility, it operates under the Clean Water Act and is regulated by an NPDES permit issued by the Louisiana Department of Environmental Quality.

The plant provides advanced treatment, which goes beyond secondary treatment to remove additional nutrients and contaminants, protecting sensitive coastal waters.