Calibration of backflow test kits is vital to ensure they are working properly. View the list of local approved backflow gauge testing companies: 

Company Address Telephone           
Fluid Meter Service Corp. 7304 McNeil Drive, Suite 604, Austin TX 78729 512-258-3594
Metro Irrigation Supply Co. 6719 Shirley Avenue, Austin TX 78752 512-458-5296
Test Gauge & Backflow Supply 3321 Garden Brook Drive, Farmers Branch TX 75234  469-206-3741


If you are a backflow gauge testing company and would like to be added to this list, please email your company name, address and telephone number to