Backflow Testing Program

What is a Backflow Device?

Rainbow Water works tirelessly to deliver safe and reliable water to all customers, and to prevent the water supply from being contaminated, some customers have backflow devices on their property to avoid water flowing back into the main water supply.  The valves on the backflow device allow water to flow in one direction and serve to protect the infrastructre from being contaminated with debris or other contaminants. Backflow devices are critical to allow water to flow in one direction in times when there is low water pressure due to water main break or wildfire, and backpressure from a water well or water pressure booster pump.

Does My Property Still Need a Backflow Device?

Rainbow Water developed a helpful checklist for customers to identify if removal of a backflow device is needed. Submit the Backflow Device Removal Eligibility Questionnaire and a Rainbow Water team member will follow up with you for more information.

About the Backflow Program

Rainbow Water's Backflow Testing Program was established to track the installation and testing of service protection backflow assemblies within the service area.  It is designed to ensure high-quality and reliable potable water services for all of our customers required to have a backflow device per Title 17 Code of Regulations: Division 1. State Department of Health Service Chapter 5. Sanitation (Environmental) Group 4. Drinking Water Supplies Artice 1. General.

Please note: The list of Certified Backflow Testers contains the names of backflow prevention assembly testers doing business in San Diego County who have been certified by the American Water Works Association (AWWA) and/or American Backflow Prevention Association (ABPA).

The San Diego County Department of Environmental Health and Rainbow Water has verified these certifications but make no other representation concerning the qualifications of these testers. The listing is not intended as either an advertisement for these testers or as a warranty by the County or District, expressed or implied. This list is for your convenience only. It should be used with discretion.

Backflow Rates

The cost associated with the Backflow Program can be found in the most recent rate sheet and fees are included in monthly billing charges for customers with approved assemblies.The monthly fee does not cover backflow repair or replacement costs. Should your device require significant repair or replacement the customer will be responsible for those costs. 

Visit the Water Rates page to view backflow fees in the most recent rate sheet or download the file below.

Backflow Device Resources

If you are unfamiliar with these types of devices and would like to learn more about their benefit, use, function, requirements, etc. go to the American Backflow Prevention Association website or American Water Works Association.

Contact Us

For questions related to tje backflow testing program  to discuss the qualifications for removing a device please contact the Rainbow Water Backflow Specialist.
Call: (760) 728-1178 extension 212
Email:  crossconnectionbackflow@rainbowmwd.com.