Backflow Prevention

Backflow prevention devices protect water supplies from contamination.

Water distribution systems are designed so that water flows from the distribution system to the customer. Though rare, hydraulic conditions in the system can cause the water to deviate from “normal” conditions and flow in the opposite direction. Cross-connections, permanent or temporary, are also possible, and Mesa Water District takes steps and coordinates inspections to ensure that backflow prevention devices are properly installed and comply with the laws protecting the public water supply. Mesa Water works with State, County, and other local agencies to assist customers with procedures for installing and maintaining backflow prevention.

The following Backflow Prevention Device Testers are certified by the Orange County Health Care Agency, Division of Environmental Health. Access the active backflow tester list here.

For questions, please contact Mesa Water at 949.574.1000.