Rowlett Creek WWTP - Garland, Texas Wastewater Treatment Plant

Rowlett Creek WWTP is a municipal wastewater treatment facility located in Garland, Texas, within Dallas County. It serves a population of approximately 170,340 people, classifying it as a large agglomeration under U. S. regulatory frameworks. The plant is situated inland, over 50 kilometers from the Gulf Coast. As a large-scale facility in the United States, Rowlett Creek WWTP is subject to the National Pollutant Discharge Elimination System (NPDES) under the Clean Water Act. This program requires permits that set effluent limits based on water quality standards. For plants of this size, secondary treatment is typically mandated, with additional nutrient removal if discharging to sensitive waters. The plant's treated effluent is discharged into local waterways that ultimately drain into the Trinity River basin. The Trinity River flows southeast through Texas and empties into Trinity Bay, part of the Galveston Bay complex on the Gulf of Mexico. This watershed supports diverse aquatic life and provides drinking water for downstream communities.

Rowlett Creek WWTP discharges into the Trinity River basin, which flows through north Texas and drains into Trinity Bay, an estuary of the Gulf of Mexico. The Trinity River supports a variety of fish and wildlife, including several species of freshwater mussels and migratory birds. The Galveston Bay system is ecologically important for commercial and recreational fisheries, including shrimp and oysters.