| Company | Location | Certifications | License # |
|---|---|---|---|
| Bertrand Enterprise | Ridgecrest, CA | Installer (C-42) | 364868 |
| Code Precast Products Inc | Shafter, CA | Installer (C-42) | 647202 |
| Coldwater Construction Inc | Frazier Park, CA | Installer (C-42) | 1055994 |
| Designer Mobile Homes | Bakersfield, CA | Installer (C-42) | 753555 |
| Hps Plumbing Services | Bakersfield, CA | Installer (C-42) | 793014 |
| Larsen Well Pump Service | Weldon, CA | Installer (C-42) | 1116344 |
| Mc Murtrey Lince Inc | Bakersfield, CA | Installer (C-42) | 937121 |
| Nuckolls Stepic | Tehachapi, CA | Installer (C-42) | 889398 |
| O'Brien Michael L | Frazier Park, CA | Installer (C-42) | 535774 |
| Oriole Homes Inc | Bakersfield, CA | Installer (C-42) | 934908 |
| Pro Rooter & Septic | Bakersfield, CA | Installer (C-42) | 824658 |
| Rigos Sanitation Llc | Tehachapi, CA | Installer (C-42) | 1132808 |
| Scott'S Rooter And Septic | Bakersfield, CA | Installer (C-42) | 1010119 |
| Sharp Excavation And Septic Services | Tehachapi, CA | Installer (C-42) | 1052632 |
| Superior Septic Service Inc | Bakersfield, CA | Installer (C-42) | 1061446 |
| Virginia Engineering And Construction Co Inc | Bakersfield, CA | Installer (C-42) | 483319 |
| West & Sons Construction | Rosamond, CA | Installer (C-42) | 596699 |
| Wigley Bill Construction | Bakersfield, CA | Installer (C-42) | 380899 |
| Winter Jack | Bakersfield, CA | Installer (C-42) | 306089 |
| Woodward David | Ridgecrest, CA | Installer (C-42) | 505656 |
20 companies in the CSLB Licensed C-42 Sanitation System Contractors are based in Kern County as of 2026-07-23. Companies based elsewhere in California also commonly serve the county.
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