Licensed Plumbing (C-36) contractors in Covina, CA

The California Contractors State License Board (CSLB) lists 45 Plumbing (C-36) contractors in Covina, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of October 6, 2026.

45 contractors

1. A-1 Rooter

   Covina, CA · CSLB #840421 · as of October 6, 2026
   Active · clear
2. Am Plumbing

   Covina, CA · CSLB #1146344 · as of October 6, 2026
   Active · clear
3. Andersen Commercial Plumbing LLC

   Covina, CA · CSLB #1039820 · as of October 6, 2026
   Active · clear
4. A Pine Plumbing CO

   Covina, CA · CSLB #1093260 · as of October 6, 2026
   Active · clear
5. Ap Plumbing And Rooter INC

   Covina, CA · CSLB #1087944 · as of October 6, 2026
   Active · clear
6. Andersen Commercial Plumbing LLC DBA Asap Drain Guys & Plumbing

   Covina, CA · CSLB #1081682 · as of October 6, 2026
   Active · clear
7. Brown Brothers Backflow Testing INC

   Covina, CA · CSLB #1031850 · as of October 6, 2026
   Active · clear
8. B W K Plumbing

   Covina, CA · CSLB #1084421 · as of October 6, 2026
   Active · clear
9. Courtesy Plumbers INC

   Covina, CA · CSLB #1016116 · as of October 6, 2026
   Active · clear
10. Cruz Johnny Plumbing

    Covina, CA · CSLB #1106109 · as of October 6, 2026
    Active · clear
11. DC Drains

    Covina, CA · CSLB #1064957 · as of October 6, 2026
    Active · clear
12. Steven Delgado

    Covina, CA · CSLB #967734 · as of October 6, 2026
    Active · clear
13. Demarco Plumbing & Drain

    Covina, CA · CSLB #1147250 · as of October 6, 2026
    Active · clear
14. Eastlake Plumbing

    Covina, CA · CSLB #1150253 · as of October 6, 2026
    Active · clear
15. Flash Plumbing INC

    Covina, CA · CSLB #1116600 · as of October 6, 2026
    Active · clear
16. Golden Eagle Plumbing

    Covina, CA · CSLB #999190 · as of October 6, 2026
    Active · clear
17. GT Rooter & Hydrojet

    Covina, CA · CSLB #1145315 · as of October 6, 2026
    Active · clear
18. Hartman Plumbing Services

    Covina, CA · CSLB #1027891 · as of October 6, 2026
    Active · clear
19. H D Production Plumbing Contractors INC

    Covina, CA · CSLB #817184 · as of October 6, 2026
    Active · clear
20. Nick Hoag

    Covina, CA · CSLB #1038859 · as of October 6, 2026
    Active · clear
21. Integrity Plumbing Company

    Covina, CA · CSLB #717098 · as of October 6, 2026
    Active · clear
22. John Plumbing

    Covina, CA · CSLB #907585 · as of October 6, 2026
    Active · clear
23. Kirman Plumbing Company

    Covina, CA · CSLB #1083688 · as of October 6, 2026
    Active · clear
24. Klein Plumbing And Drain Cleaning Service

    Covina, CA · CSLB #850452 · as of October 6, 2026
    Active · clear
25. Kline's Plumbing INC

    Covina, CA · CSLB #912603 · as of October 6, 2026
    Active · clear
26. Matthew Olivas

    Covina, CA · CSLB #950208 · as of October 6, 2026
    Active · clear
27. MG Mechanical & Plumbing LLC

    Covina, CA · CSLB #1160519 · as of October 6, 2026
    Active · clear
28. MVP Plumbing & Drain Services INC

    Covina, CA · CSLB #946114 · as of October 6, 2026
    Active · clear
29. Nava Plumbing Company

    Covina, CA · CSLB #1149784 · as of October 6, 2026
    Active · clear
30. Oscar's Plumbing & Rooter

    Covina, CA · CSLB #1126182 · as of October 6, 2026
    Active · clear
31. Osmart Plumbing Corp

    Covina, CA · CSLB #1157593 · as of October 6, 2026
    Active · clear
32. Raymond Palacios

    Covina, CA · CSLB #1006068 · as of October 6, 2026
    Active · clear
33. Pennine Plumbing

    Covina, CA · CSLB #1090302 · as of October 6, 2026
    Active · clear
34. PMC Plumbing INC

    Covina, CA · CSLB #1133528 · as of October 6, 2026
    Active · clear
35. Power Plumbing

    Covina, CA · CSLB #1089489 · as of October 6, 2026
    Active · clear
36. Ramon Ramos

    Covina, CA · CSLB #742790 · as of October 6, 2026
    Active · clear
37. Rugged Plumbing

    Covina, CA · CSLB #1161620 · as of October 6, 2026
    Active · clear
38. T Ryan Plumbing

    Covina, CA · CSLB #466317 · as of October 6, 2026
    Active · clear
39. Superior Plumbing

    Covina, CA · CSLB #1066271 · as of October 6, 2026
    Active · clear
40. Super Rooter INC

    Covina, CA · CSLB #1032285 · as of October 6, 2026
    Active · clear
41. Top Notch Plumbing INC

    Covina, CA · CSLB #1018137 · as of October 6, 2026
    Active · clear
42. Verity Plumbing INC

    Covina, CA · CSLB #970359 · as of October 6, 2026
    Active · clear
43. John White Plumbing

    Covina, CA · CSLB #497638 · as of October 6, 2026
    Active · clear
44. Wuillay Plumbing INC

    Covina, CA · CSLB #527859 · as of October 6, 2026
    Active · clear
45. A C Plumbing

    Covina, CA · CSLB #825130 · as of October 6, 2026
    Suspended · workers' comp

See all Plumbing (C-36) contractors in California →

Data sourced from the California Contractors State License Board (CSLB), current as of October 6, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.