| Company | Location | Certifications | License # |
|---|---|---|---|
| Aaa Septic And Rooter | French Camp, CA | Installer (C-42) | 811037 |
| Budget Plumbing Inc | French Camp, CA | Installer (C-42) | 792521 |
| Central Valley Septic Backhoe Drilling Inc | Woodbridge, CA | Installer (C-42) | 459045 |
| Elvis Booth | Escalon, CA | Installer (C-42) | 1050181 |
| John Williams Underground Sewer | Stockton, CA | Installer (C-42) | 1060903 |
| Oakland Trenchless & Rooter | Tracy, CA | Installer (C-42) | 810801 |
| Oviawe Uyiosa | Tracy, CA | Installer (C-42) | 1063009 |
| Richard'S Pumping & Excavating Inc | Stockton, CA | Installer (C-42) | 850703 |
| Sierra Construction & Septic | Tracy, CA | Installer (C-42) | 839545 |
| Trippple Threat Plumbing Llc | Tracy, CA | Installer (C-42) | 1049358 |
10 companies in the CSLB Licensed C-42 Sanitation System Contractors are based in San Joaquin County as of 2026-07-23. Companies based elsewhere in California also commonly serve the county.
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