Backflow Testing in Oceanside, CA

What a backflow assembly protects

Normally water flows one way, from the City main into your building. Backflow is the reverse. A sudden drop in main pressure, such as during a main break or heavy hydrant use, can siphon water out of a building's piping. A booster pump, boiler or elevated tank can also push building water back toward the street. A backflow prevention assembly at the service or on an irrigation or fire line stops that water from reaching the public supply.

How the City program works

The City of Oceanside Water Utilities Cross Connection Control Program oversees backflow protection. Two details matter most to property owners:

• The program maintains an approved backflow tester list. Use a tester from that list so the City accepts the result.
• Test results are submitted through the City's web-based reporting system rather than on paper.

Questions about whether your property needs an assembly, what type, or when your test is due go to the program directly at (760) 435-5878. Follow the date on your notice rather than guessing at a schedule.

Test day, step by step

1. The tester confirms the assembly type, size and serial number match City records.
2. Water is shut off briefly while gauges are attached to the test cocks.
3. Each check valve and relief valve is measured against its required pressure differential.
4. Passing results are entered into the City system.
5. A failed assembly is usually rebuilt with a repair kit, or replaced if the body is damaged, and then retested.

Common failure causes near the coast

Debris lodged in a check seat, worn rubber parts and a stuck relief valve are the usual culprits anywhere. Assemblies above ground near the ocean also face salt air, which can corrode bolts, test cocks and shutoff handles. An insulated cover or enclosure helps protect exposed units, including during the occasional cold night.

What affects the cost

The assembly type and size, how many devices are on the property, access, whether a repair kit or full replacement is needed, and the retest all play in. Owners of several assemblies can often have them tested on one visit, and keeping the area around each assembly clear makes the test go faster.