Licensed Septic Companies in Contra Costa County, CA
41 septic companies serve Contra Costa County, California, and 41 of them hold a California septic license or certification matched to the California Contractors State License Board list (data as of October 2026).
Septic services in Contra Costa County
Guides: Septic tank pumping · Septic system installation · Septic inspection · Septic repair · Installation cost · Pumping cost
41 septic companies in Contra Costa County
Richmond 7
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Avalon Rooter
5221 Central Avenue Ste 10A, Richmond, CA 94804
- Licensed: California Licensed Contractor (C42) · #1067780 (California Contractors State License Board, verify)
Per state license: Installation
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Better Rooter Inc
1201 Pennsylvania Ave Ste C, Richmond, CA 94801
- Licensed: California Licensed Contractor (C42) · #1035198 (California Contractors State License Board, verify)
Per state license: Installation
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Betti Val Plumbing & Heating Inc
3605 Macdonald Ave, Richmond, CA 94805
- Licensed: California Licensed Contractor (C-4, C16, C20, C36, C42) · #196928 (California Contractors State License Board, verify)
Per state license: Installation
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Erwyn'S Plumbing
747 9Th St, Richmond, CA 94801
- Licensed: California Licensed Contractor (C36, C42) · #1050217 (California Contractors State License Board, verify)
Per state license: Installation
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Lifesaver Plumbing And Rooter
1556 Fitzgerald Dr. #185, Richmond, CA 94564
- Licensed: California Licensed Contractor (C36, C42) · #1134533 (California Contractors State License Board, verify)
From their website: Inspection Per state license: Installation
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Ortega Plumbing & Rooter LLC
P O Box 5108, Richmond, CA 94805
- Licensed: California Licensed Contractor (C36, C42) · #1105758 (California Contractors State License Board, verify)
Per state license: Installation
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Sewer & Drain Masters
1000 13Th Street, Richmond, CA 94801
- Licensed: California Licensed Contractor (C36, C42) · #808055 (California Contractors State License Board, verify)
- Licensed: California Licensed Contractor (C36, C42) · #915553 (California Contractors State License Board, verify)
From their website: Inspection Per state license: Installation
Antioch 6
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Cali Plumbing & Rooter LLC
1313 W 18Th St, Antioch, CA 94509
- Licensed: California Licensed Contractor (C36, C42) · #1141194 (California Contractors State License Board, verify)
Per state license: Installation
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Drain Doctors And Plumbers
909 Almond Street, Antioch, CA 94509
- Licensed: California Licensed Contractor (C36, C42) · #944651 (California Contractors State License Board, verify)
Per state license: Installation
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Drainman Pro Inc
P O Box 756, Antioch, CA 94509
- Licensed: California Licensed Contractor (C36, C42) · #881542 (California Contractors State License Board, verify)
Per state license: Installation
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In Demand Plumbing Heating & Air
729 Fulton Shipyard Roadsuite A1, Antioch, CA 94509
- Licensed: California Licensed Contractor (C20, C34, C36, C42) · #943549 (California Contractors State License Board, verify)
From their website: Inspection Per state license: Installation
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Royal Rooter
5239 Delta View Way, Antioch, CA 94531
- Licensed: California Licensed Contractor (C36, C42) · #862460 (California Contractors State License Board, verify)
Per state license: Installation
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Service Pros Plumbers, Inc.
126 Railroad Ave, Antioch, CA 94509
- Licensed: California Licensed Contractor (C34, C36, C42) · #979455 (California Contractors State License Board, verify)
From their website: Inspection Per state license: Installation
Concord 5
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All Water Heaters & Plumbing LLC
3375 Port Chicago Hwy Ste 15Unit 1180, Concord, CA 94520
- Licensed: California Licensed Contractor (C36, C42) · #1143044 (California Contractors State License Board, verify)
Per state license: Installation
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Echo Plumbing & Rooter
4180 Treat Blvd Suite P, Concord, CA 94518
- Licensed: California Licensed Contractor (C36, C42) · #1033391 (California Contractors State License Board, verify)
From their website: Inspection Per state license: Installation
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Guerra Bros. Plumbing, Inc.
100 Medburn St Ste B, Concord, CA 94520
- Licensed: California Licensed Contractor (A, C36, C42) · #802256 (California Contractors State License Board, verify)
From their website: Inspection · Grease traps Per state license: Installation
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N V Heathorn Co
1980 Olivera Rd Ste C, Concord, CA 94520
- Licensed: California Licensed Contractor (A, B, C-2, C-4, C-7, C10, C16, C20, C21, C34, C36, C38, C39, C42, C43, C46) · #761659 (California Contractors State License Board, verify)
Per state license: Installation
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U S T Testing Services Inc
1635 Challenge Drive, Concord, CA 94520
- Licensed: California Licensed Contractor (A, B, C-4, C12, C16, C20, C34, C36, C38, C42, C43, C60) · #866797 (California Contractors State License Board, verify)
Per state license: Installation
El Sobrante 3
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Everest Plumbing And Drain
6219 Baywood Dr, El Sobrante, CA 94803
- Licensed: California Licensed Contractor (C36, C42) · #945398 (California Contractors State License Board, verify)
Per state license: Installation
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H & R Underground
4221 Appian Way, El Sobrante, CA 94803
- Licensed: California Licensed Contractor (C36, C42) · #878364 (California Contractors State License Board, verify)
Per state license: Installation
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Sewer Connection Inc
5017 Appian Way, El Sobrante, CA 94803
- Licensed: California Licensed Contractor (C34, C36, C42) · #796452 (California Contractors State License Board, verify)
Per state license: Installation
Martinez 3
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Advanced Trenchless Inc
4980 Pacheco Blvd Suite B, Martinez, CA 94553
- Licensed: California Licensed Contractor (A, B, C36, C42) · #971074 (California Contractors State License Board, verify)
From their website: Pumping · Inspection · Grease traps Per state license: Installation
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American Pipe Bursting LLC
437 Orchard View Ave, Martinez, CA 94553
- Licensed: California Licensed Contractor (C36, C42) · #1039462 (California Contractors State License Board, verify)
Per state license: Installation
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Ernie's Plumbing and Sewer Service
3795 Pacheco Blvdsuite C, Martinez, CA 94553
- Licensed: California Licensed Contractor (C36, C42) · #802333 (California Contractors State License Board, verify)
From their website: Pumping · Inspection · Repair · Grease traps Per state license: Installation
San Ramon 3
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Magnificent Plumbing & Rooter
21001 San Ramon Valley Blvd A4, San Ramon, CA 94583
- Licensed: California Licensed Contractor (C36, C42) · #1018622 (California Contractors State License Board, verify)
From their website: Inspection Per state license: Installation
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Symbolic Plumbing
P O Box 3836, San Ramon, CA 94583
- Licensed: California Licensed Contractor (B) · #1151739 (California Contractors State License Board, verify)
- Licensed: California Licensed Contractor (B) · #1045433 (California Contractors State License Board, verify)
- Licensed: California Licensed Contractor (C36, C42) · #1136896 (California Contractors State License Board, verify)
Per state license: Installation
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Tankless Water Heater Experts
2415 San Ramon Valley Bl #4365, San Ramon, CA 94583
- Licensed: California Licensed Contractor (B, C-4, C36, C42) · #992032 (California Contractors State License Board, verify)
Per state license: Installation
Danville 2
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Matheneys Plumbing & Heating
P O Box 1063, Danville, CA 94526
- Licensed: California Licensed Contractor (C20, C36, C42) · #933520 (California Contractors State License Board, verify)
Per state license: Installation
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Olsson Plumbing Company
806 Luz Court, Danville, CA 94526
- Licensed: California Licensed Contractor (C-4, C20, C36, C42, C43) · #443706 (California Contractors State License Board, verify)
Per state license: Installation
Lafayette 2
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All Bay Rooting And Plumbing Services
3746 Mt Diablo Blvd 203, Lafayette, CA 94549
- Licensed: California Licensed Contractor (C36, C42) · #821259 (California Contractors State License Board, verify)
Per state license: Installation
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Red White & Blue Construction
P O Box 773, Lafayette, CA 94549
- Licensed: California Licensed Contractor (B, C10, C36, C42) · #275246 (California Contractors State License Board, verify)
From their website: Perc testing Per state license: Installation
Oakley 2
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Malachi Plumbing Inc
4240 Machado Lane, Oakley, CA 94561
- Licensed: California Licensed Contractor (C36, C42) · #1072451 (California Contractors State License Board, verify)
Per state license: Installation
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Pure Water Plumbing
4240 Machado Lane, Oakley, CA 94561
- Licensed: California Licensed Contractor (C34, C36, C42) · #1016056 (California Contractors State License Board, verify)
Per state license: Installation
Brentwood 1
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Davila Plumbing Company Inc
Po Box 787, Brentwood, CA 94513
- Licensed: California Licensed Contractor (C36, C42) · #934263 (California Contractors State License Board, verify)
Per state license: Installation
Clyde 1
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Clear Water Mechanical Plumbing & Underground
100 Medburn Street, Suite A, Clyde, CA 94520
- Licensed: California Licensed Contractor (B, C-4, C20, C36, C42) · #931971 (California Contractors State License Board, verify)
Per state license: Installation
Hercules 1
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Plumbing Pro
1511 Sycamore Ave Ste M244, Hercules, CA 94547
- Licensed: California Licensed Contractor (C36, C42) · #930861 (California Contractors State License Board, verify)
Per state license: Installation
Pacheco 1
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Flowing Water
5915 Pacheco Blvd, Pacheco, CA 94553
- Licensed: California Licensed Contractor (C36, C42) · #1111542 (California Contractors State License Board, verify)
Per state license: Installation
Pleasant Hill 1
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Corsa Plumbing And Rooter
289 Twinview Drive, Pleasant Hill, CA 94523
- Licensed: California Licensed Contractor (C36, C42) · #1091604 (California Contractors State License Board, verify)
Per state license: Installation
Rodeo 1
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Bay Plumbing & Rooter LLC
525 Vaqueros Ave, Rodeo, CA 94572
- Licensed: California Licensed Contractor (C36, C42) · #929458 (California Contractors State License Board, verify)
Per state license: Installation
San Pablo 1
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Bay Flow Sewers
2134 Broadmore Ave, San Pablo, CA 94806
- Licensed: California Licensed Contractor (C42) · #1155098 (California Contractors State License Board, verify)
Per state license: Installation
Walnut Creek 1
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Rooter-Man
P O Box 3684, Walnut Creek, CA 94598
- Licensed: California Licensed Contractor (C36, C42) · #646020 (California Contractors State License Board, verify)
Per state license: Installation
No listings match those filters.
Septic licensing in California
California has no license named for septic work; septic systems fall under the C-42 Sanitation System classification. Counties issue system permits. The Contractors State License Board (CSLB) issues these credentials: C-42 Sanitation System contractor license.
Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Contra Costa County and whether the permit fee is in their quote.
California septic licensing: agencies, license types and how to check a license →
Septic companies in Contra Costa County: common questions
How many licensed septic companies are in Contra Costa County, CA?
41 septic companies serve Contra Costa County, California, and 41 of them hold a California septic license or certification matched to the California Contractors State License Board list (data as of October 2026). Each license badge on this page names the agency and links to its lookup so you can confirm it.
Who licenses septic contractors in California?
California has no license named for septic work; septic systems fall under the C-42 Sanitation System classification. Counties issue system permits. The licensing body is the Contractors State License Board (CSLB).
Which companies pump septic tanks in Contra Costa County?
2 of the 41 listings in Contra Costa County offer septic tank pumping, either on their own website or under a state pumper license. Use the service filter above to show only those companies.
Which companies install septic systems in Contra Costa County?
41 listings in Contra Costa County install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their California license.
How do I check a septic contractor's license in California?
Use the Contractors State License Board (CSLB)'s lookup (https://www.cslb.ca.gov/onlineservices/checklicenseII/checklicense.aspx) and search the contractor's name or license number. Our guide to checking a septic license walks through it.