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Licensed Plumbers in Covina, California

Updated November 1, 2026 from CSLB's public license file · C-36 Plumbing Contractor

  • 62licensed plumbers
  • 62active (Clear)
  • 0%with a suspension
  • 35.5%workers' comp exempt
  • 8.5 yrsmedian time licensed
  • 69.4%corp / LLC / partnership (30.6% sole owner)
  • 13new in the last 12 months
  • —change tracking began November 1, 2026

There are 62 plumbers based in Covina in CSLB's current file. 62 (100%) have a Clear status as of November 1, 2026.

35.5% report a workers' comp exemption, 15.7 points lower than the statewide figure for plumbers (51.2%), so many of these businesses say they have no employees. The share with a suspension, 0%, is 4.6 points lower than the Los Angeles County rate for the same license (4.6%).

The median plumber here has held a license for 8.5 years (less than the statewide median of 13.4), and 13 licenses were issued in the last 12 months.

In California this work generally calls for the C-36 Plumbing Contractor license (or a B license when it is part of a larger multi-trade job). See the C-36 Plumbing Contractor guide for what the license covers.

How to check a plumber's license in Covina

  1. Find the business in the list below, or search all 62 Covina listings, and open its profile. You want a Clear status and the C-36 classification (a B license can also cover it as part of a multi-trade job).
  2. Re-check the same number on CSLB's Instant License Check the day you sign; our copy is refreshed weekly and 0% of Covina listings here already show a suspension.
  3. Match the license holder's name to the name on the written contract and the person you meet. Ask for proof of workers' comp if anyone besides the owner will work on site. Hiring checklist.

50 of 62 plumbers in Covina

Covina plumbers sorted with Clear licenses first, then by years licensed. Badges reflect CSLB's file dated November 1, 2026, not a rating of anyone's work.

Licensed plumbers in Covina
Business nameLicense #StatusYearsWorkers' compBond
Valley Plumbing 408122 Clear 45 Exempt On file
Ryan T Plumbing 466317 Clear 41 Exempt On file
White John Plumbing 497638 Clear 40 Exempt On file
Wuillay Plumbing INC 527859 Clear 38 Insured On file
A L D C L A INC 616269 Clear 35 Insured On file
Integrity Plumbing Company 717098 Clear 30 Exempt On file
Ramos Ramon 742790 Clear 29 Exempt On file
Southwest Mechanical INC 761417 Clear 27 Insured On file
H D Production Plumbing Contractors INC 817184 Clear 23 Insured On file
A C Plumbing 825130 Clear 23 Insured On file
A-1 Rooter 840421 Clear 22 Exempt On file
Klein Plumbing and Drain Cleaning Service 850452 Clear 21 Exempt On file
John Plumbing 907585 Clear 18 Insured On file
Kline's Plumbing INC 912603 Clear 18 Insured On file
Jt Rooter and Plumbing Services 918226 Clear 18 Exempt On file
Mvp Plumbing & Drain Services INC 946114 Clear 16 Insured On file
Matthew Olivas 950208 Clear 16 Exempt On file
Delgado Steven 967734 Clear 15 Exempt On file
Verity Plumbing INC 970359 Clear 14 Insured On file
Baldwin Builders 992380 Clear 12 Insured On file
Golden Eagle Plumbing 999190 Clear 11 Insured On file
Monroe Diversified Companies INC 1006269 Clear 11 Exempt On file
Palacios Raymond 1006068 Clear 11 Exempt On file
Courtesy Plumbers INC 1016116 Clear 10 Insured On file
Top Notch Plumbing INC 1018137 Clear 10 Insured On file
Hartman Plumbing Services 1027891 Clear 9 Insured On file
American Infastructure 1030873 Clear 9 Insured On file
Brown Brothers Backflow Testing INC 1031850 Clear 9 Exempt On file
Super Rooter INC 1032285 Clear 9 Exempt On file
Enovative Mechanical and Energy Services 1036688 Clear 8 Insured On file
Hoag Nick 1038859 Clear 8 Insured On file
Andersen Commercial Plumbing LLC 1039820 Clear 8 Insured On file
Green Eco Construction INC 1063673 Clear 6 Insured On file
Dc Drains 1064957 Clear 6 Insured On file
Superior Plumbing 1066271 Clear 6 Insured On file
Big Smile Plumbing 1078521 Clear 5 Insured On file
Asap Drain Guys & Plumbing 1081682 Clear 5 Insured On file
Kirman Plumbing Company 1083688 Clear 5 Insured On file
B W K Plumbing 1084421 Clear 4 Exempt On file
Canyon Air Systems 1085763 Clear 4 Insured On file
Ap Plumbing and Rooter INC 1087944 Clear 4 Insured On file
Power Plumbing 1089489 Clear 4 Insured On file
Pennine Plumbing 1090302 Clear 4 Insured On file
A Pine Plumbing CO 1093260 Clear 4 Insured On file
Cruz Johnny Plumbing 1106109 Clear 3 Exempt On file
Flash Plumbing INC 1116600 Clear 2 Exempt On file
Oscar's Plumbing & Rooter 1126182 Clear 2 Insured On file
Pmc Plumbing INC 1133528 Clear 1 Insured On file
Am Plumbing 1146344 Clear 1 Exempt On file
Gt Rooter & Hydrojet 1145315 Clear 1 Insured On file

See all 62 plumbers in Covina

Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.

Frequently asked questions

How many licensed plumbers are in Covina?

CSLB's current public file lists 62 plumbers with a Covina mailing address. 62 have a Clear status, and 95.2% show no issues at all in the file (no suspension, no pending action, bond on file, not near expiration).

What license does a plumber need in California?

CSLB issues the C-36 Plumbing Contractor classification for this work. In Los Angeles County, 100% of Covina's holders are Clear right now. The license requirement starts at $1,000 per job (the minor-work rule).

How do I check a plumber's workers' comp?

Each profile shows the workers' comp type, insurer and policy dates from CSLB's file. Among Covina plumbers, 35.5% are exempt (no employees), 64.5% insured and 0% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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Guides