Cross Connection Prevention

The RDNO is committed to providing safe and clean drinking water; however, once the water is in the pipes we can't always protect water from backflow or cross connection contamination. To help ensure water remains clean and uncontaminated right to your tap, we have implemented a Cross Connection Control (CCC) Program.

A Cross Connection Control Program is a requirement specified by the Provincial government through the Interior Health Authority (IHA) as a condition of the Water Utility’s Permit to Operate. It also helps RDNO-GVW meet the requirements of the BC Drinking Water Protection Act and Canadian Drinking Water Quality Guidelines.

Devices used to protect the water system from backflow contamination must be tested annually to meet CCC requirements. Agricultural water users must have a Certified Backflow Tester perform a backflow preventer test within 30 days of the start of irrigation turn-on to avoid having their water turned off.  If a test report is not received by Greater Vernon Water, the water service will be turned off until it is submitted. An Operator Service Fee of $65 will apply to have your water service turned back on.  For a list of Certified Backflow Testers, see the Testing & Maintenance Requirements section below.

Backflow Assembly Test Reports can now also be submitted through FAST Tester.  As of January 1, 2023, a data entry fee will apply to Backflow Assembly Test Reports submitted by email or paper copy.  For more information about submitting test reports - click here.

Information about FAST Tester can be found at:

For questions regarding your Cross Connection or Backflow Assembly, please contact the Cross Connection Officer at 250-550-3654 or via email at