Backflow Testers



All test reports for existing and replacement backflow devices must be submitted through BSI Online. All backflow testers must register on BSI Online in order to submit reports. A fee of $12.95 is charged for each report submitted.This does not apply to new installations.

The City of Round Rock has partnered with Backflow Solutions, Inc. (BSI Online) to administer the City’s backflow prevention program, ensuring backflow prevention devices are installed and maintained in compliance with federal, state and local codes.

Backflow Prevention Tester Information

In order to become an approved backflow prevention assembly tester within the City, you must provide to BSI Online proof of commission licensing, and proof that your testing equipment is able to maintain a calibration of plus or minus 0.2 psid accuracy.

  • Backflow Prevention Assembly Tester (BPAT) license and gauge calibration certification must be submitted and maintained before any backflow test reports will be entered into system. Information can be submitted via mail, fax or email.
  • Reports will be rejected if updated license and gauge information are not on file and available upon request of City Backflow Official.

How To Register with BSI                         How to Submit Reports    

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Backflow Prevention Device Testing

In accordance with the City’s Code of Ordinances and the Texas Commission on Environmental Quality, backflow prevention devices are required to be tested as outlined below.

  • Annual Testing is required for High Hazard devices. Devices typically used for non-residential purposes, such as hospitals, restaurants, industries, etc. in which there is a high risk of contamination from backflow into the water system. Residential pools with auto-fill are also required to have a high hazard device and have it tested annually.
  • 7 Year Testing is required for Low Hazard devices. Devices typically used for residential purposes, such as irrigation systems. The risk for contamination is much lower than those considered High Hazard; therefore testing is required once every 7 years.

Failure to complete the required testing – If the property owner and/or person in control of the backflow device fails to have the device tested within the allotted time frame, the City will have the device tested and a testing fee of $75 plus the actual cost of each test will be applied to the owner’s water bill.

Test failure – If the device is tested and does not pass, the property owner will have 30 days to have the device repaired and retested.  If the City had the device tested and it did not pass, the actual cost of the repairs and the retest will be applied to the owner’s water bill.


Tester Registration with BSI Online
City’s Code of Ordinances, Chapter 44 – Utilities, Article VII
Texas Commission on Environmental Quality, Chapter 290 – Public Drinking Water Regulations

New Installations and Backflow Permits

New Installation Inspections and Backflow Permits are processed in the Building Inspections Division located at 301 W. Bagdad Ave, Round Rock, TX 78664, Phone: 512-218-5550, Fax: 512-218-5563, or Email: Chief Building Official.

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Tel: (512) 218-5575
Fax: (512) 218-6649
Mailing Address:
3400 Sunrise Road
Round Rock, Texas 78665