Cottonwood Creek WWTP - Advanced Wastewater Treatment in Frisco, Texas

Cottonwood Creek WWTP is an advanced wastewater treatment facility located in Frisco, Texas, within Collin County. The plant serves a population of approximately 1,700 residents, reflecting its role as a small-scale municipal treatment system in a rapidly growing suburban area north of Dallas. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,135.62 units and an average discharge volume of 719.23 units, the facility operates below its full capacity. As a US-based plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Texas Commission on Environmental Quality (TCEQ), which set effluent limits to protect water quality. The treated effluent from Cottonwood Creek WWTP is discharged into local waterways that ultimately drain into the Trinity River basin. The Trinity River flows southeast through Texas to Trinity Bay and the Gulf of Mexico. The plant's advanced treatment helps protect downstream aquatic ecosystems and supports water quality in the region, which is important for both ecological health and recreational uses.

Cottonwood Creek WWTP discharges into local creeks that feed into the Trinity River basin. The Trinity River flows through North Texas to the Gulf of Mexico, supporting diverse aquatic life and providing water for agriculture and municipalities. The advanced treatment at this plant helps reduce nutrient loading and protects downstream water quality in a region experiencing rapid urban development.