Published prices for a backflow device test run from about $25 to $179 per assembly, and most listings sit toward the lower half. That is the test only. A repair, new parts, a replacement assembly or a missed deadline cost more. Burbank has no public price list, so use these ranges as a guide and get a written quote. The wider rules sit on our permits, codes and inspections page.
How much does backflow device testing cost in Burbank?
Published tester prices range from about $25 to $179 per assembly nationwide. One listing set of 14 prices shows $29.99 to $100, and a wider set of 62 prices shows $25 to $179. A site that tracks Burbank had too few reports to show a local range. Expect the test to cost less than most plumbing visits.
| Item | Guide price | Notes |
|---|---|---|
| Annual test, one assembly | $25 to $179 | Published listings, not a Burbank price list |
| Each extra assembly, same visit | Ask the tester | Some price each assembly separately, so ask for the rate |
| Repair or parts after a failed test | Quote after the tester inspects | No reliable published figure |
| Replacement assembly | Quote after a site visit | Depends on size, type and permit |
| BWP administrative fee if you miss the due date | $65, plus the full cost of the plumber BWP hires | Stated on BWP's page |
Those prices are listings, not what homeowners were billed, so treat the low end with care. A very low advertised price can leave out the filing step or the call-out.
What does the test price include, and what does it leave out?
It should cover travel, the test itself, a pass or fail result and filing of the result with the utility. Many testers carry common repair parts, so a minor fix can be done during the same visit. Parts, labor for a repair and a replacement assembly are usually extra. Ask what is bundled before you book.
Questions that clear this up in one phone call:
- Does the price include submitting the form to BWP, or only handing you a copy?
- Does a separate trip charge come on top of the per-assembly price?
- What does a repair cost per hour, and how are parts priced?
- If a retest is needed after a repair, is it free or charged again?
BWP's page says the tester typically submits the result through its SwiftComply portal, and a passed assembly with no filed form counts as a violation, so the filing is part of what you are paying for.
What makes backflow testing cost more?
Number of assemblies, size, difficulty of access and the condition of the device drive the price. Larger assemblies, devices in vaults, rooftop units or tight crawl spaces take longer. A test on an old device that needs rebuilding costs more once parts are added.
For a typical single-family home with one irrigation assembly, the test is a routine visit. For a multi-unit building, a restaurant or a site with several fire and domestic assemblies, the bill is larger and tests are often grouped. See commercial backflow testing if that is your situation.
Does residential backflow testing cost differ from commercial?
Per assembly the test is similar, but a house usually has one assembly and a commercial site has several, so the total differs. Residential homes mostly need a test if they have dedicated irrigation, a pool line or a fire sprinkler connection. Commercial sites are more likely to carry larger assemblies, which cost more to test and repair.
A single home with no assembly has no backflow cost. If you do not know whether you have one, BWP can tell you. If you do, the notice from BWP arrives about a month before the compliance month, so you have time to compare quotes.
What does a missed deadline cost?
If the test is not provided by the due date, BWP says it may hire a private plumber and charge you the full cost plus an additional $65 administrative fee. Continued non-compliance may result in water service termination or fines. Booking before the due date avoids the fee.
Compare that with a normal booking at the published range. A $65 fee plus a plumber hired at BWP's choosing is almost always worse than picking your own tester. You may choose any tester on BWP's published list, though BWP makes no promise about the quality of their work, so you need to ask the right questions yourself. Backflow prevention testing walks through what the tester does.
When should you call a plumber about backflow costs?
Call early when you get the BWP notice, when the assembly leaks or looks damaged, or when you plan to add irrigation, a pool or a fire line. Ask for the test price, the repair rate and the replacement estimate in one call, so you can compare plumbers on the whole picture.
Before you book, verify any license or bond claim with the contractor's entry in the state license board database, and ask whether the tester is on BWP's list. A replacement or relocation of backflow preventers is work the law reserves for plumbers who hold a California contractor license, and it needs a permit. If the plumber offers comprehensive plumbing inspections, a camera inspection of the drains or a pressure check can be bundled with the test, and the written price must state it. Ask for a quote and we'll arrange a visit. The home page lists the other jobs on offer.
Questions people ask
What does residential backflow testing run?
Published prices run from about $25 to $179 per assembly, and a typical home has one assembly or none. The price usually covers the test and the filing, but not repairs or parts. Treat listings as a guide and confirm in writing what your quote includes, including the filing step with Burbank Water and Power.
How long does a backflow device test take?
A routine test on one residential assembly is usually a short visit, often under an hour, and the water is off briefly. If the assembly fails and parts are needed, the visit runs longer or a second trip may be needed. Ask whether the tester carries common parts to avoid extra charges.
What do I need to ask a tester before booking?
Ask whether they are on BWP's tester list, whether the price includes filing the form, what a repair costs, and whether a retest is charged. Get the answers in writing. Request the contractor's license number and look it up on the CSLB website prior to saying yes.
Must I be home during the test?
A person must open up the assembly and shutoff area, and the water goes off briefly. Staying for the whole visit is optional, yet request the written result before the tester drives away.
Who pays for the repair if the device fails?
The property owner. BWP says a failed assembly must be repaired or replaced and tested again, and the customer is responsible for compliance. Landlords and tenants should settle in the lease who handles it. Ask for a written repair price before work begins so a failed test does not become a surprise bill.
References
- Burbank Water and Power, Cross Connection Control: deadlines, $65 administrative fee, tester rules
- Published backflow tester prices, 14 listings $29.99 to $100 and 62 listings $25 to $179 per assembly, checked October 2026
- Los Angeles County Public Works, Backflow Prevention Program
- Backflow prevention device, Wikipedia
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