WALLIS WWTP - Advanced Wastewater Treatment in El Pleasant, Texas

WALLIS WWTP serves the community of El Pleasant in Austin County, Texas, treating wastewater for approximately 1,200 residents. The plant is part of the municipal infrastructure managed under state and federal environmental oversight. The facility employs advanced treatment processes, ensuring high-quality effluent before discharge. With a designed capacity of 757.08 megaliters and an annual discharge volume of 567.81 megaliters, the plant operates efficiently within its capacity. As a US facility, it complies with the Clean Water Act and is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets strict limits on pollutant discharges to protect water quality. The treated effluent is discharged into local waterways that drain into the Brazos River basin, ultimately reaching the Gulf of Mexico. The plant plays a key role in protecting downstream aquatic ecosystems and maintaining water quality in the region's rivers and coastal waters.

The plant discharges into the Brazos River watershed, which flows southeast through Texas to the Gulf of Mexico. This river system supports diverse aquatic life and provides habitat for fish and migratory birds. The advanced treatment helps minimize nutrient loading and protects downstream water quality in the ecologically sensitive coastal zone.