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What it is and who needs one

The purpose

If pressure in the main drops, water can siphon backwards. A backflow assembly is the mechanical stop that prevents irrigation water, pool water or process water re-entering the potable supply.

Typical requirements

Properties with irrigation systems, fire suppression lines, pools, or commercial process water commonly require an assembly. Your water district sets the specific rules for your property.

Annual testing

Most districts require assemblies to be tested annually by a tester certified and registered with that district, and they will notify you when yours is due.

What we handle

Installation and replacement

Sizing and installing the correct assembly type for the application, and replacing units that have failed or frozen.

Repair and rebuild

Assemblies have serviceable internals. A failed test does not always mean a full replacement.

Freeze and impact damage

Above-ground assemblies take knocks from landscaping equipment and, inland, occasional cold snaps.

Coordinating your annual test

If you have received a notice from your water district, call us and we will talk you through what it is asking for and what happens next.

Related services

Backflow notice from your water district?

Someone answers 24 hours a day across San Diego County.

Call (858) 221-4540