Licensed Septic Companies in Marin County, CA
5 septic companies serve Marin County, California, and 5 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 Marin County
Guides: Septic tank pumping · Septic system installation · Septic inspection · Installation cost · Pumping cost
5 septic companies in Marin County
Novato 2
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Cervantes Sil E
8121 Binford Road, Novato, CA 94945
- Licensed: California Licensed Contractor (C42) · #707105 (California Contractors State License Board, verify)
Per state license: Installation
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Roto-Rooter Plumbing & Water Cleanup
885 Olive Avenue Suite D, Novato, CA 94945
- Licensed: California Licensed Contractor (C12, C36, C42) · #288461 (California Contractors State License Board, verify)
From their website: Pumping · Inspection · Grease traps Per state license: Installation
San Rafael 2
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Ghilotti Bros Inc
525 Jacoby Street, San Rafael, CA 94901
- Licensed: California Licensed Contractor (A) · #1149424 (California Contractors State License Board, verify)
- Licensed: California Licensed Contractor (A) · #1074504 (California Contractors State License Board, verify)
- Licensed: California Licensed Contractor (A) · #1088673 (California Contractors State License Board, verify)
- +3 more credentials
Per state license: Installation
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Maggiora And Ghilotti Inc
555 Du Bois Street, San Rafael, CA 94901
- Licensed: California Licensed Contractor (A, B, C-8, C12, C21, C32, C34, C42) · #226767 (California Contractors State License Board, verify)
- Licensed: California Licensed Contractor (A, B, C-8, C12, C21, C32, C34, C42) · #395047 (California Contractors State License Board, verify)
Per state license: Installation
Point Reyes Station 1
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City Sewer Pumping Inc
P O Box 651, Point Reyes Station, CA 94956
- Licensed: California Licensed Contractor (C42) · #739966 (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 Marin 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 Marin County: common questions
How many licensed septic companies are in Marin County, CA?
5 septic companies serve Marin County, California, and 5 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 Marin County?
1 of the 5 listings in Marin 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 Marin County?
5 listings in Marin 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.