GBRA Water Treatment Plant


New Braunfels, TX

Services Provided:

Preconstruction, Construction Management


Malcolm Pirnie


Guadalupe-Blanco River Authority

Total Square Feet:



  • Located on a 13-acre site five miles south of Canyon Lake, the project provides up to 10 million gallons of water per day to a portion of San Antonio and the communities of Fair Oaks Ranch, Boerne and Bulverde.
  • The project includes two, 2 million gallon treated water tank, two 162,000-gallon raw water tanks, a six-million-gallon residual lagoon, a Clean-in-Place lagoon, a rapid mix/flocculation basin, a 20,000-square-foot membrane building, a chlorine building, a high service pump station and a 5,600-square-foot administration building.
  • Testing the plant was an extensive process involving several weeks of pipe assessment and fine-tuning, and programming the intricate control instrumentation and equipment.