| Company | Location | Certifications | License # |
|---|---|---|---|
| 360 Sewer | Folsom, CA | Installer (C-42) | 1052318 |
| A P S Environmental Inc | North Highlands, CA | Installer (C-42) | 985553 |
| Abc Plumbing Heating And Air Conditioning | Sacramento, CA | Installer (C-42) | 412127 |
| Abc Service | Sacramento, CA | Installer (C-42) | 844025 |
| Ace Plumbing Heating & Air | Sacramento, CA | Installer (C-42) | 313506 |
| Airco Mechanical Inc | Sacramento, CA | Installer (C-42) | 311454 |
| Armstrong Plumbing Inc | Sacramento, CA | Installer (C-42) | 364321 |
| Bell Bros | Mather, CA | Installer (C-42) | 726129 |
| Buffalo Mechanical | Sacramento, CA | Installer (C-42) | 1137903 |
| Domco Plumbing Inc | Folsom, CA | Installer (C-42) | 828505 |
| Ellis L G Plumbing Inc | Sacramento, CA | Installer (C-42) | 375658 |
| Express Sewer & Drain Inc | Rancho Cordova, CA | Installer (C-42) | 882660 |
| Fox Loomis Incorporated | Sacramento, CA | Installer (C-42) | 372314 |
| Gassaway Franklin T & Sons Inc | Sacramento, CA | Installer (C-42) | 575507 |
| Iron Mechanical Inc | Sacramento, CA | Installer (C-42) | 934181 |
| J S Construction & Septic Inc | Elk Grove, CA | Installer (C-42) | 922436 |
| L G Backhoe Service Inc | Sacramento, CA | Installer (C-42) | 521193 |
| Nation Restoration Llc | Sacramento, CA | Installer (C-42) | 1137994 |
| Phoenix Construction | Orangevale, CA | Installer (C-42) | 268157 |
| Smyco | Fair Oaks, CA | Installer (C-42) | 399622 |
| Superior On-Site Solutions | Sacramento, CA | Installer (C-42) | 869546 |
| The Trenchless Company | Sacramento, CA | Installer (C-42) | 775703 |
22 companies in the CSLB Licensed C-42 Sanitation System Contractors are based in Sacramento County as of 2026-07-23. Companies based elsewhere in California also commonly serve the county.
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