| Company | Location | Certifications | License # |
|---|---|---|---|
| 5 Star Plumbing Heating & Air Inc | Hemet, CA | Installer (C-42) | 1014340 |
| A & A Plumbing And Rooter Service | Riverside, CA | Installer (C-42) | 406229 |
| A M C Septic Contractors Inc | Corona, CA | Installer (C-42) | 982636 |
| A M P Manufactured Home Specialist Inc | Menifee, CA | Installer (C-42) | 997499 |
| A S A P Pumping Inc | Cathedral City, CA | Installer (C-42) | 855851 |
| Aas Sanitation | Perris, CA | Installer (C-42) | 1127701 |
| Advanced Underground Systems | Riverside, CA | Installer (C-42) | 879314 |
| Advantage Septic Systems | Menifee, CA | Installer (C-42) | 853378 |
| Alms Underground Construction Inc | Cathedral City, CA | Installer (C-42) | 482180 |
| Altruistic Construction Services | Winchester, CA | Installer (C-42) | 968580 |
| Anza Valley Backhoe Service | Anza, CA | Installer (C-42) | 616535 |
| Aztec Septic | Murrieta, CA | Installer (C-42) | 874529 |
| B&bd Septic Service | Murrieta, CA | Installer (C-42) | 1156720 |
| Bailey Johnathan Ryan | Beaumont, CA | Installer (C-42) | 1078309 |
| Benjamin Septic | Riverside, CA | Installer (C-42) | 1102445 |
| Black Sheep Plumbing | Blythe, CA | Installer (C-42) | 1115703 |
| Busher Kent Excavating | Idyllwild, CA | Installer (C-42) | 432851 |
| C B Plumbing | Blythe, CA | Installer (C-42) | 771331 |
| Canyon Hills Plumbing Inc | Lake Elsinore, CA | Installer (C-42) | 1010329 |
| Carranza Family Corporation | Beaumont, CA | Installer (C-42) | 961469 |
| Certified Septic Service | Riverside, CA | Installer (C-42) | 1058134 |
| Certifiedseptic.com Inc | Murrieta, CA | Installer (C-42) | 1124254 |
| Chris Meekins Backhoe Service Inc | Romoland, CA | Installer (C-42) | 577494 |
| Countywide Septic Llc | Mira Loma, CA | Installer (C-42) | 1121090 |
| Curtis Dump Truck & Backhoe Service Inc | Wildomar, CA | Installer (C-42) | 552745 |
| D G Septic Services | Temecula, CA | Installer (C-42) | 1106811 |
| Darrell'S Pumping | Nuevo, CA | Installer (C-42) | 696145 |
| Davis Plumbing & Heating Inc | Perris, CA | Installer (C-42) | 365794 |
| Dependable Septic Service | Riverside, CA | Installer (C-42) | 849600 |
| Diamond House Plumbing | Riverside, CA | Installer (C-42) | 830356 |
| Diamond W Excavating | Wildomar, CA | Installer (C-42) | 554199 |
| Dzikowski Ted S | Hemet, CA | Installer (C-42) | 381054 |
| E O S Construction Co | Wildomar, CA | Installer (C-42) | 314985 |
| Family Plumbing Heating & Air Inc Dba Berck'S Old Time Plumbing | Hemet, CA | Installer (C-42) | 918182 |
| Field View Construction Co Inc | Riverside, CA | Installer (C-42) | 1062979 |
| Flowright Sanitary Structures Inc | Wildomar, CA | Installer (C-42) | 1101276 |
| Gibson Plumbing Inc | Norco, CA | Installer (C-42) | 593968 |
| Great Oaks Construction | Anza, CA | Installer (C-42) | 885346 |
| Hambys Septic Pumping & Maintenance | Hemet, CA | Installer (C-42) | 799834 |
| Hammer Plumbing And Pumping Inc | Cathedral City, CA | Installer (C-42) | 661018 |
| Henley'S Plumbing & Air | Corona, CA | Installer (C-42) | 776658 |
| Honey Doo Wagon Septic Pumping | Perris, CA | Installer (C-42) | 1046855 |
| Idyllwild Backhoe | Idyllwild, CA | Installer (C-42) | 332570 |
| J N L Construction | Riverside, CA | Installer (C-42) | 755439 |
| Lanik Enterprises Inc | Temecula, CA | Installer (C-42) | 458947 |
| Lanik Pumping Service | Temecula, CA | Installer (C-42) | 910514 |
| Last Call Backhoe Llc | Wildomar, CA | Installer (C-42) | 1123385 |
| Liston Jim | Riverside, CA | Installer (C-42) | 514452 |
| Logo'S Sanitation Systems | Perris, CA | Installer (C-42) | 1034755 |
| Manhole Builders Inc | Corona, CA | Installer (C-42) | 831892 |
| Manhole Builders West | Corona, CA | Installer (C-42) | 1116301 |
| Manhole Construction Specialists Inc | Murrieta, CA | Installer (C-42) | 445161 |
| Mata Gerardo | Indio, CA | Installer (C-42) | 986323 |
| Miranda'S Septic Services | Cathedral City, CA | Installer (C-42) | 1002066 |
| Moses Minh Khuu | La Quinta, CA | Installer (C-42) | 849598 |
| Nextgen Septic By Willette | Wildomar, CA | Installer (C-42) | 1156623 |
| Pacific Structures | Riverside, CA | Installer (C-42) | 655717 |
| Paugh Kevin Matthew | Norco, CA | Installer (C-42) | 715807 |
| Performance Septic | Hemet, CA | Installer (C-42) | 1031419 |
| Pipeline & Utility Contractors Inc | Norco, CA | Installer (C-42) | 481130 |
| Poss & Sons Pipeline | Perris, CA | Installer (C-42) | 350510 |
| Ramirez Joan | Riverside, CA | Installer (C-42) | 1043805 |
| Rd Hydrojet Plumbing & Drain Inc | Murrieta, CA | Installer (C-42) | 1076642 |
| Reliable Septic | Corona, CA | Installer (C-42) | 1081510 |
| Rice Wayne C Enterprises | Sun City, CA | Installer (C-42) | 583643 |
| Rightway Septic Tank Pumping | Wildomar, CA | Installer (C-42) | 1113374 |
| Rightway Site Services Inc | Lake Elsinore, CA | Installer (C-42) | 891951 |
| Rivard Timothy A | Riverside, CA | Installer (C-42) | 231048 |
| Rooter Alert | Riverside, CA | Installer (C-42) | 815612 |
| S & G Pumping | Palm Desert, CA | Installer (C-42) | 950244 |
| S S W Mechanical Construction Inc | Palm Springs, CA | Installer (C-42) | 736942 |
| Septic Solutions Inc | Murrieta, CA | Installer (C-42) | 782200 |
| Sewer & Septic Pros Inc | Desert Hot Springs, CA | Installer (C-42) | 986954 |
| Smith Harold K Excavating Contractor | Idyllwild, CA | Installer (C-42) | 232135 |
| Speedy Pumping | Perris, CA | Installer (C-42) | 853578 |
| Stowells Terry J | La Quinta, CA | Installer (C-42) | 481157 |
| Sunland Sewer Company | Temecula, CA | Installer (C-42) | 992433 |
| T A Rivard Inc | Riverside, CA | Installer (C-42) | 377966 |
| Torres Commercial Plumbing | La Quinta, CA | Installer (C-42) | 1060857 |
| Underground Connection Group | Temecula, CA | Installer (C-42) | 813345 |
| Usa Drain And Plumbing Works Inc | Palm Desert, CA | Installer (C-42) | 1039357 |
| Veteran'S Choice Inc | Murrieta, CA | Installer (C-42) | 1073518 |
| West Coast Sanitation Inc | Riverside, CA | Installer (C-42) | 973707 |
| White Mark | Riverside, CA | Installer (C-42) | 506653 |
| Wilhelm Thomas Frederic | Desert Hot Springs, CA | Installer (C-42) | 604997 |
| Wilson A D Inc | Norco, CA | Installer (C-42) | 333979 |
| Wright Septic | San Jacinto, CA | Installer (C-42) | 969430 |
87 companies in the CSLB Licensed C-42 Sanitation System Contractors are based in Riverside County as of 2026-07-23. Companies based elsewhere in California also commonly serve the county.
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