| Company | Location | Certifications | License # |
|---|---|---|---|
| 831 Pld Enterprises Inc | Carmel Valley, CA | Installer (C-42) | 514106 |
| Abbott Construction & Plumbing | Salinas, CA | Installer (C-42) | 469680 |
| Cypress Plumbing Inc | Carmel, CA | Installer (C-42) | 375289 |
| Grimm Construction Co | Salinas, CA | Installer (C-42) | 293841 |
| Jewell'S Septic Construction | Aromas, CA | Installer (C-42) | 1042969 |
| M.j. Excavation | Bradley, CA | Installer (C-42) | 887920 |
| Marina Plumbing & Heating | Marina, CA | Installer (C-42) | 574447 |
| Mr Rooter Plumbing Of Monterey | Carmel, CA | Installer (C-42) | 1128256 |
| My Plumber Inc | Salinas, CA | Installer (C-42) | 1024528 |
| Rural Septic Technologies | Salinas, CA | Installer (C-42) | 1023034 |
| Schupay Kenneth James | Royal Oaks, CA | Installer (C-42) | 625556 |
| Siteworx Inc | Salinas, CA | Installer (C-42) | 1078030 |
| Tom'S Septic Construction | Salinas, CA | Installer (C-42) | 406512 |
13 companies in the CSLB Licensed C-42 Sanitation System Contractors are based in Monterey County as of 2026-07-23. Companies based elsewhere in California also commonly serve the county.
Tell us what you need — we'll connect you with state-certified companies serving your area. No obligation.