Backflow Testing & Prevention in Whittier, CA
Annual backflow assembly testing, repair, and new device installation that keeps your drinking water separate from irrigation and process water.
- Annual testing explained.
- Repair and replacement.
- Free estimates on planned work.
Got A Backflow Test Notice From Your Water Provider?
A letter from your water provider asking for a backflow test can feel like a surprise bill. Backflow testing and prevention in Whittier keeps contaminated water from flowing backward into the public supply, and the notice means a device on your property needs checking.
Backflow happens when pressure drops or reverses and pulls water from a lawn sprinkler, a boiler, or a hose back toward the main. A backflow preventer stops it, and a test proves the preventer still works.
Common Backflow Devices
| Device | Where it is found | What it protects against |
|---|---|---|
| Reduced pressure principle assembly | High-hazard connections such as boilers and some commercial uses. | Backpressure and backsiphonage with a relief port. |
| Double check valve assembly | Fire lines and moderate hazard connections. | Backpressure and backsiphonage with two check valves. |
| Pressure vacuum breaker | Many residential irrigation systems. | Backsiphonage from sprinkler lines. |
| Atmospheric vacuum breaker | Hose bibs and some small irrigation valves. | Backsiphonage only, installed above the highest outlet. |
What The Rules Say
California's cross-connection control rules are in Title 17 of the California Code of Regulations, and water providers adopt programs that require testing certain devices on a schedule. Your provider decides which connections need annual testing and which form to submit.
Tests must be performed by a tester the provider recognizes, and the results go to the provider on its form. Ask the provider for its approved tester list and deadline before you book, so you do not pay for a test it will not accept.
Assemblies themselves are built to published standards, such as ASSE 1013 for reduced pressure assemblies, ASSE 1015 for double check assemblies, and ASSE 1020 for pressure vacuum breakers. Ask that any replacement appear on the approved list kept by the USC Foundation for Cross-Connection Control and Hydraulic Research.
Test Deadline Coming Up?
Call and share the notice. We can plan the visit around your provider's due date.
Why It Matters In Whittier
Whittier is served by several water providers, including City of Whittier Water, which draws on wells in the Whittier Narrows area, along with Suburban Water Systems, San Gabriel Valley Water Company, and Orchard Dale Water District. Each runs its own cross-connection program, so the notice you receive, the deadline, and the form can differ from a neighbor's.
Many single-family lots here have irrigation, and many businesses have fire lines or boilers. Those are the connections providers focus on, because a drop in main pressure can pull yard or process water backward. Scheduling the test early leaves time to repair a failed device before the deadline.
What A Backflow Test Visit Looks Like
Locate
The device is found, and gauges are attached to its test ports.
Test
Check valves and relief valves are tested against published pressure criteria.
Repair
Worn seats, springs, or rubber parts are replaced if the device fails.
Record
Results are written up on the form your provider asks for.
Signs A Device Needs Attention
Water spitting from the relief port
A reduced pressure assembly that dumps water may have a fouled check valve.
Leaking at test cocks
Dripping fittings suggest worn seals.
Freeze or impact damage
A cracked body or bonnet needs replacement.
Missed annual tests
A device not tested on schedule can trigger notices or shutoff from the provider.
What To Do Before The Tester Arrives
A few minutes of preparation prevents a second trip.
- Find your provider's notice and note the due date, the account number, and the device location.
- Clear plants, boxes, and debris from around the device so the tester can reach the test ports.
- Shut off the irrigation controller for the day, since water may be shut off briefly during the test.
- Tell the dispatcher the make, size, and serial number if you can read them from the device tag.
- Ask for the result in writing, and keep it with your other property records.
What Testing And Repair Cost
Reminder: keep every test report. Providers can request proof, and some insurers ask for it after a contamination event.
Related Services And Nearby Work
Businesses often schedule backflow tests alongside other maintenance, and commercial plumbing service covers the rest of the building. Homes with irrigation may also want a look at the water line feeding the system, since the backflow device sits close to it.
We test devices in La Habra and across Whittier. The device's location matters, because a vault or an enclosure changes the visit.
Your test notice comes from your water provider, and Whittier has several of them. A shop in Uptown and a home in South Whittier can receive notices from different providers with different deadlines and forms. Bring the notice to the call so the right paperwork is filed with the right agency.
Backflow Questions
The provider is responsible for keeping the public supply safe, and a failed device on your property could let contaminated water back into it.
Many assemblies require annual testing, though the schedule is set by your provider. Check the notice for the due date.
A tester recognized by your water provider. Ask the provider for its approved list before booking.
It must be repaired or replaced, then retested. The provider usually gives a deadline.
Many do, and some providers require annual tests. Check your provider's program.
Location depends on the type of device and local rules. Some must be above the highest outlet, and others can be installed in a vault.