Here is a 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
SIMCO Electronics 11110 Metric Blvd, Suite B Austin, TX 78758 512-719-4045
Test Gauge & Backflow Supply 3321 Garden Brook Drive Farmers Branch, TX 75234 469-206-3741