NAICS 238220 · Plumbing, Heating, and Air-Conditioning Contractors

Plumbers in Ontario, CA

49 licensed plumbers · every license checked against the issuer's file

More cities in California

Los Angeles 651San Diego 494San Francisco 437San Jose 384Sacramento 242Riverside 208Bakersfield 191Anaheim 181Santa Rosa 157Glendale 156Long Beach 145Fresno 143Van Nuys 134El Cajon 133Escondido 128Oakland 128
Listings 1–20How results are ordered
03

Allen Scott

Upland, CA · (909) 373-5424

CA-CSLB 770863 · B C36General contractorPlumber
License activechecked Oct 24, 2026
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04

Allyn Bruce Plumbing Inc

Pomona, CA · (909) 392-8403

CA-CSLB 245042 · C16 C20 +1Fire sprinkler contractorHeating and air conditioningPlumber
License activechecked Oct 24, 2026
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16

Andrade Construction

Fontana, CA · (909) 437-4740

CA-CSLB 878116 · B C10 +1General contractorElectricianPlumber
License activechecked Oct 24, 2026
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18

Aqua-Q Inc

Chino Hills, CA · (909) 591-0802

CA-CSLB 923071 · C55Plumber
License activechecked Oct 24, 2026
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