Plumbing contractors in Ontario, CA
50 licenses with the C-36 classification list Ontario (San Bernardino County) as their address with the state, 50 of them active. Active licenses with nothing flagged come first.
- Spec Construction Co IncA · B · C-4 · C-8 +9 · #419626 Ontario · San Bernardino County Active
- Sts Plumbing & Rooter IncC-36 · #1140510 Ontario · San Bernardino County Active
- Sweet Water LandscapingC-27 · C-36 · #817917 Ontario · San Bernardino County Active
- The Specialist PlumbingC-36 · #915935 Ontario · San Bernardino County Active
- Vargos Plumbing & Sewer IncC-36 · #1138500 Ontario · San Bernardino County Active
- Water SolutionsC-36 · #954619 Ontario · San Bernardino County Active
- West Coast Pipeline SpecialistA · C-10 · C-36 · #1129511 Ontario · San Bernardino County Active
- West Coast PlumbingC-36 · #853144 Ontario · San Bernardino County Active
- Alpha Omega PlumbingC-36 · #977823 Ontario · San Bernardino County Active Disciplinary bond on file
- Ruvico IncC-36 · #1021363 Ontario · San Bernardino County Active Workers' comp suspension pending
Source: CSLB license file, Nov 8, 2026All trades in Ontario