Grandview WWTP - Advanced Wastewater Treatment in Johnson County, Texas

Grandview WWTP is an advanced wastewater treatment facility located in Johnson County, Texas, serving a population of 1,511. The plant operates under the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all discharges into surface waters. As an advanced treatment plant, it provides a higher level of pollutant removal than secondary treatment, ensuring compliance with stringent water quality standards. The plant has a designed capacity of 757.08 megaliters and currently discharges 492.10 megaliters annually, indicating operational capacity below design levels. Advanced treatment typically includes nutrient removal and disinfection. The facility is regulated by the Texas Commission on Environmental Quality (TCEQ), which oversees NPDES permitting and compliance monitoring. The treated effluent is discharged into a local water body that ultimately drains into the Trinity River basin, which flows into the Gulf of Mexico. The Trinity River supports diverse aquatic life and provides water for municipal, agricultural, and industrial uses downstream. The plant's advanced treatment helps protect water quality in this ecologically important watershed.

The plant discharges into a tributary of the Trinity River, which flows through north-central Texas to Trinity Bay and the Gulf of Mexico. The Trinity River basin supports a variety of fish and wildlife, including several species of freshwater mussels and migratory birds. Advanced treatment at this plant reduces nutrient loads, helping to prevent eutrophication in downstream reservoirs and coastal waters.