#1 SON PLUMBING
Highland909-904-3774On this utility's approved list
89 companies on Riverside Public Utilities's tester list · company-level list (no tester count) · list version 6.1.26
On Riverside Public Utilities's approved list, version 6.1.26 · 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.
Riverside Public Utilities Approved Backflow Tester List. Fetched 2026-11-04 (UTC).
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Alphabetical. Company-level list (no tester count): the utility lists companies, not individual testers.
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From its website (2026-11-15): also backflow repair, backflow installation; serves homes; 24/7 or emergency service.
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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.
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From its website (2026-11-15): also backflow repair, backflow installation.
On this utility's approved list
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From its website (2026-11-15): also backflow repair, backflow installation; 24/7 or emergency service; area: Serving All of San Diego County.
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Other utility lists in California: Beaumont, Corte Madera, Escondido, Irvine, Modesto, Oakland, Oakley, 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.