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Irvine backflow testing

82 companies on Irvine Ranch Water District's tester list · 114 testers in total · list version 5_18_26

About this list

Utility
Irvine Ranch Water District
List title
“Backflow Assembly Testers” (as printed)
Version
5_18_26
Fetched
2026-11-04 (UTC)
Format
PDF
Testers
114 testers on the list. 5 testers on this list have no company named. We count them but do not list individuals. 1 more entry on the list belongs to companies named after a person; we do not republish those here, so check the utility's own list. Listed there? You can ask us to add your company.
Gaps
Our copy of Irvine Ranch Water District's list (version 5_18_26), fetched 2026-11-04, has no town or ZIP code for 80 of the 82 companies; no phone for 68 of the 82 companies (the list prints none for them, or prints a number only one tester of the company gives, or one labelled as a mobile, which we do not republish). Those cards leave the field out.
The utility says
“The following list of companies is provided for your convenience only and is not intended to be an endorsement of any of the listed testing companies. This list also may not include all licensed testing companies.”

On Irvine Ranch Water District's approved list, version 5_18_26 · fetched 2026-11-04

Every company below is on this list; each card says “On this utility's approved list”. The list is the utility’s, not ours: we copy company names, addresses and phone numbers from it, sort them A to Z and do not rank or endorse anyone. Confirm with your utility before booking.

On the list as of5_18_26

Backflow Assembly Testers. Fetched 2026-11-04 (UTC).

Open the utility’s own list
The utility’s backflow program page
How we handle listings (correct or remove a listing)

Confirm with your utility before booking.

Companies on the list (82)

Alphabetical. Tester counts are the number of testers the list names for each company.

0–9 and symbols · 5

360 BACKFLOW

On this utility's approved list

1 tester on this list

A · 10

B · 7

Basic Backflow

909-881-0898

On this utility's approved list

3 testers on this list

From its website (2026-11-15): also backflow repair, backflow installation; area: certified to work in San Bernardino, Riverside, Orange, and Los Angeles Counties.

C · 4

D · 2

DE3 SERVICES

On this utility's approved list

1 tester on this list

E · 1

F · 4

FIRE SAFETY FIRST

Santa Ana714-836-4800

On this utility's approved list

4 testers on this list

From its website (2026-11-15): also fire sprinklers, other fire protection, other fire protection; 24/7 or emergency service; area: Based in Orange County; serves Los Angeles, Orange, Riverside, San Bernardino, San Diego and Ventura Counties.

G · 1

H · 4

H2O BACKFLOW

On this utility's approved list

1 tester on this list

J · 1

JOE BACKFLOW

On this utility's approved list

1 tester on this list

K · 1

L · 3

M · 5

O · 6

P · 8

R · 3

S · 10

T · 5

V · 2

VIS

On this utility's approved list

1 tester on this list

Other utility lists in California: Beaumont, Corte Madera, Escondido, Modesto, Oakland, Oakley, Riverside, Sacramento.

Guides: How much does a backflow test cost? Tester prices, plus what your utility adds, Failed backflow test: what failed, your repair deadline, and when to replace the device, What is a backflow test? What the tester measures, what passes, and what you have to do, Irrigation backflow testing: which device your sprinkler system needs, when it is tested, and how to winterize it.