| Company | Location | Certifications | License # |
|---|---|---|---|
| A - Plus Septic And Drain | Yucca Valley, CA | Installer (C-42) | 997433 |
| A1 Construction | San Bernardino, CA | Installer (C-42) | 817084 |
| Action Pumping Inc | Yucca Valley, CA | Installer (C-42) | 436154 |
| All State Earth Moving Company | Fontana, CA | Installer (C-42) | 1101475 |
| American Septic Services Inc | San Bernardino, CA | Installer (C-42) | 887324 |
| Anderson Construction Company & Sons | Wrightwood, CA | Installer (C-42) | 334940 |
| Aranda'S Sanitation Systems | Ontario, CA | Installer (C-42) | 1053122 |
| Ballinger Developments | Yucca Valley, CA | Installer (C-42) | 832890 |
| Barton Construction Services | Phelan, CA | Installer (C-42) | 1110025 |
| Bennett Excavation Inc | Crestline, CA | Installer (C-42) | 363126 |
| Best Rooter & Plumbing | Yucaipa, CA | Installer (C-42) | 795242 |
| Big Mike'S Rooter & Plumbing Inc | Yucaipa, CA | Installer (C-42) | 734772 |
| Billings Grading And Earthworks Llc | Yucca Valley, CA | Installer (C-42) | 1068743 |
| Bonafide Earthworks | Crestline, CA | Installer (C-42) | 979736 |
| Bright Underground Workz | Fontana, CA | Installer (C-42) | 1154710 |
| Brinton'S Plumbing | San Bernardino, CA | Installer (C-42) | 807359 |
| Brown'S Backhoe | Phelan, CA | Installer (C-42) | 922359 |
| Building 5 Septic Inc | Redlands, CA | Installer (C-42) | 829093 |
| Burns Sewer & Septic Service | Victorville, CA | Installer (C-42) | 795322 |
| C P Construction Co Inc | Ontario, CA | Installer (C-42) | 304795 |
| California Pumping & Sanitation Inc | San Bernardino, CA | Installer (C-42) | 948947 |
| Cheryl'S Underground Construction Inc | Apple Valley, CA | Installer (C-42) | 675343 |
| Chino Standard Inc | Chino, CA | Installer (C-42) | 920479 |
| Cisneros Brothers Plumbing Inc | Hesperia, CA | Installer (C-42) | 864345 |
| Ddh Apple Valley Construction Inc | Apple Valley, CA | Installer (C-42) | 680052 |
| Drainexperts.com | Colton, CA | Installer (C-42) | 896586 |
| El-Co Contractors Inc | San Bernardino, CA | Installer (C-42) | 317093 |
| Enzrub Sanitation Services | Chino, CA | Installer (C-42) | 1142512 |
| Goddard'S/Nazco Services | San Bernardino, CA | Installer (C-42) | 442664 |
| Guzman Septic Services | Rialto, CA | Installer (C-42) | 1140222 |
| H Septic | Ontario, CA | Installer (C-42) | 1149300 |
| Haefele Paul | Barstow, CA | Installer (C-42) | 923013 |
| Harry'S Mike Septic Service | Mentone, CA | Installer (C-42) | 697742 |
| Helmer William J General Eng Contractor Inc | Barstow, CA | Installer (C-42) | 329298 |
| Hendley Enterprises Silver Valley Septic | Yermo, CA | Installer (C-42) | 850390 |
| Henry Bush Plumbing Heating Air & Home Energy Solutions | Redlands, CA | Installer (C-42) | 184826 |
| High Desert Septic | Apple Valley, CA | Installer (C-42) | 1134317 |
| High Speed Rooter And Plumbing Inc | Ontario, CA | Installer (C-42) | 1017796 |
| Honest Johns Underground | Apple Valley, CA | Installer (C-42) | 798559 |
| Hubbs Timothy Allen | Running Springs, CA | Installer (C-42) | 1027299 |
| Invert Construction Corp | San Bernardino, CA | Installer (C-42) | 1044261 |
| Johnny Boys Septic Pumping Inc | Apple Valley, CA | Installer (C-42) | 1124914 |
| Karen'S Septic & Sewer Co | Wrightwood, CA | Installer (C-42) | 890546 |
| Kenneth Doyle Willis | Big Bear City, CA | Installer (C-42) | 253184 |
| Lake Arrowhead Plumbing Inc | Lake Arrowhead, CA | Installer (C-42) | 993989 |
| Latco - Latta Larry R | Chino, CA | Installer (C-42) | 634104 |
| Lourenco Backhoe Inc | Phelan, CA | Installer (C-42) | 995615 |
| M C C Equipment Rentals Inc | Yucaipa, CA | Installer (C-42) | 819356 |
| M K P Construction Co | Upland, CA | Installer (C-42) | 535134 |
| M K P Construction Incorporated | Upland, CA | Installer (C-42) | 801787 |
| Mark Michael | Twentynine Palms, CA | Installer (C-42) | 622433 |
| Mbl Backhoe & Dumptruck Service | Big Bear Lake, CA | Installer (C-42) | 888463 |
| Mcdonald Shawn Equipment Inc | Big Bear Lake, CA | Installer (C-42) | 670041 |
| Meyer E J Company Inc | Yucaipa, CA | Installer (C-42) | 218385 |
| Mojave Septic | Phelan, CA | Installer (C-42) | 1140358 |
| Moran Manhole Builders Inc | Rancho Cucamonga, CA | Installer (C-42) | 898416 |
| Motec Engineering And Construction | Big Bear City, CA | Installer (C-42) | 621198 |
| Mr Rooter Of San Bernardino | Colton, CA | Installer (C-42) | 1020427 |
| Norfork Incorporated | Rancho Cucamonga, CA | Installer (C-42) | 868794 |
| Patterson Ronald Lee | Pinon Hills, CA | Installer (C-42) | 994327 |
| Pooman Pumping | Phelan, CA | Installer (C-42) | 1085521 |
| Pro - Craft Construction Inc | Redlands, CA | Installer (C-42) | 467234 |
| Pro Tech Plumbing | Ontario, CA | Installer (C-42) | 915091 |
| Remodel E T C Inc | Yucca Valley, CA | Installer (C-42) | 929992 |
| Renteria Vincent Roy | Victorville, CA | Installer (C-42) | 1059601 |
| Robo One Plumbing Corporation | Fontana, CA | Installer (C-42) | 639506 |
| Rodriguez Brothers Engineering Inc | Ontario, CA | Installer (C-42) | 670969 |
| Romans James R Inc | Big Bear Lake, CA | Installer (C-42) | 755833 |
| Romans James Rick | Big Bear Lake, CA | Installer (C-42) | 367482 |
| Roto-Rooter Plumbers And Septic Service | Apple Valley, CA | Installer (C-42) | 752077 |
| Rush Plumbing Heating And Air | Yucaipa, CA | Installer (C-42) | 972136 |
| Salazar Septic Services | Highland, CA | Installer (C-42) | 1035708 |
| Sanborn D M Pipeline Contractors | Redlands, CA | Installer (C-42) | 541556 |
| Schenfeld Alan William | Apple Valley, CA | Installer (C-42) | 825780 |
| Sci | Alta Loma, CA | Installer (C-42) | 984859 |
| Senor Septic Construction & Pumping | Ontario, CA | Installer (C-42) | 888517 |
| Senor Septic Construction And Pumping Inc | Ontario, CA | Installer (C-42) | 1048170 |
| Smith James Douglas | Chino Hills, CA | Installer (C-42) | 610453 |
| Thompson Family Plumbing And Drain Llc | Hesperia, CA | Installer (C-42) | 984369 |
| Turner Engineering | Morongo Valley, CA | Installer (C-42) | 558518 |
| Underground Manholes | San Bernardino, CA | Installer (C-42) | 659134 |
| Urgent Septic Solutions Llc | Ontario, CA | Installer (C-42) | 1121506 |
| Usa Septic Service | Lucerne Valley, CA | Installer (C-42) | 885729 |
| Willis Ken Construction Inc | Big Bear City, CA | Installer (C-42) | 613798 |
| Ws Plumbing Inc | Yucca Valley, CA | Installer (C-42) | 912730 |
| Yearsley Gerald Earl | Barstow, CA | Installer (C-42) | 919390 |
86 companies in the CSLB Licensed C-42 Sanitation System Contractors are based in San Bernardino 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.