BackflowNear Test-Due Reminder

Backflow testing in Los Angeles

In the Los Angeles area, each water utility runs its own backflow program: Los Angeles Department of Water and Power and Long Beach Utilities each set who must test, when the report is due and how it is filed. 24 listed testing companies work within 30 miles of Los Angeles.

Each fact links the page it came from. Utility and state pages were read October 6 and 7, 2026.

Who has to test in Los Angeles

The rule depends on the utility that sends your water bill. Each line below is from that utility's own page.

  • Los Angeles Department of Water and Power: All approved backflow assemblies must be inspected and tested annually, or more often if LADWP decides it is necessary (Rule 16-D, Section 9.2).
  • Long Beach Utilities: After the Department's initial test and certification of a new assembly, assemblies connected directly to the public water system are maintained, serviced and tested annually by the owner (LBUD Rules and Regulations, Section 804).

Sources: Los Angeles Department of Water and Power; Long Beach Utilities

How each utility takes the test report

Most utilities here take the report online through a vendor portal; the tester files it. Open a utility for its own deadline, filing steps and fees.

UtilityReport filed throughApproved tester listPublished fee
Los Angeles Department of Water and PowerNot statedNone foundNone found
Long Beach UtilitiesSee the utility pageYes, loaded hereYes

What testing costs in Los Angeles

These are amounts the utility or a company published on its own page, shown as published, never averaged.

  • Long Beach Utilities: LBUD's fee appendix lists Backflow Plan Check at $86 per hour, and plan check requires full payment by check to Long Beach Utilities Department.
  • Long Beach Utilities: Backflow preventer plan check, required before a plumbing permit, needs full payment by check payable to Long Beach Utilities Department, with fees in Appendix B of the Rules and Regulations.

Sources: Long Beach Utilities; Long Beach Utilities

If the test is missed

  • Los Angeles Department of Water and Power: After reasonable notice, LADWP will deny or discontinue water service where a required assembly is not installed, tested and maintained, has been removed or bypassed, or an unprotected cross-connection exists; service is restored only after compliance.
  • Long Beach Utilities: LBUD may terminate water service if unprotected cross-connections exist, a defect is found in an assembly, or an assembly is removed or bypassed without written permission; termination can be immediate and without notice to protect water quality.

Sources: Los Angeles Department of Water and Power; Long Beach Utilities

California rules behind the local programs

State rules set the minimum; the utilities above add their own deadlines and tester registration.

  • CCCPH 3.3.3(b): water systems, the State Water Board or a local health agency may require more frequent tests for high hazard premises or assemblies at higher risk of failing.
  • Also tested after installation, repair, winterizing or relocation.
  • CCCPH 3.3.3(e): the water system may allow extensions if its Cross-Connection Control Plan provides for them.

Sources: California rule; California rule; California rule

Common questions

Who requires backflow testing in Los Angeles?

Your water utility. Los Angeles Department of Water and Power and Long Beach Utilities each run a program; check the notice your utility sends for your due date.

Backflow testing companies near Los Angeles

What the badges mean
✓ CA Utility-Approved Tester Verified On the city list
The company is on a water utility's own approved list (the second badge names the list). That is the utility's approval, not a state license, and it counts for that utility.
3 certified testers
How many certified testers the roster lists at this business.
★ 4.8 (25 reviews)
The Google rating, shown as Google reports it. It does not change the order.

Order is by our quality score, never by payment. How we verify listings.

✓ CA Utility-Approved Tester Verified #PI0000282 ★ 4.3 (12 reviews) On LA County certified Backflow Testing

1632 W 11th St, Los Angeles, CA 90015 · 3 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

✓ CA Utility-Approved Tester Verified #PI0000619 ★ 3 (4 reviews) On LA County certified Backflow Testing

263 W Olive Ave, Burbank, CA 91502 · 6 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

✓ CA Utility-Approved Tester Verified #PI0000264 ★ 5 (680 reviews) On LA County certified Backflow Testing

1465 San Marino Ave, San Marino, CA 91108 · 10 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

AAA Backflow

80/100
✓ CA Utility-Approved Tester Verified #PI0000777 ★ 3.9 (7 reviews) On LA County certified Backflow Testing

675 S Glenwood Pl, Burbank, CA 91506 · 5 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

Bavco

100/100
✓ CA Utility-Approved Tester Verified #PI0000090 ★ 4.7 (30 reviews) 5 certified testersOn LA County certified Backflow Testing

20435 S Susana Rd, Long Beach, CA 90810 · 18 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

✓ CA Utility-Approved Tester Verified #PI0000866 ★ 4.9 (220 reviews) On LA County certified Backflow Testing

5726 Bankfield Ave, Culver City, CA 90230 · 10 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

✓ CA Utility-Approved Tester Verified #PI0001013 ★ 4.4 (36 reviews) On LA County certified Backflow Testing

6446 E Washington Blvd, Commerce, CA 90040 · 10 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

✓ CA Utility-Approved Tester Verified #PI0000142 ★ 4.2 (13 reviews) On LA County certified Backflow Testing

1112 Montana Ave #108, Santa Monica, CA 90403 · 14 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

✓ CA Utility-Approved Tester Verified #PI0001130 ★ 5 (3 reviews) On LA County certified Backflow Testing

12698 Schabarum Ave, Irwindale, CA 91706 · 16 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

✓ CA Utility-Approved Tester Verified #PI0000094 ★ 5 (4 reviews) On LA County certified Backflow Testing

17501 Chase St, Northridge, CA 91325 · 16 mi from Los Angeles

Verified Oct 2026 · Unclaimed listing

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