California licenses the contractors who build and service septic and sanitation systems under the C-42 classification, issued by the Contractors State License Board (CSLB). This page lists active C-42 licensees from the official CSLB data portal.
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Showing 135 of 967 certified companies. The rest are listed on their county pages, each of which lists every company in that county — browse all 967 California companies by county ↑.
| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| 360 Sewer | Folsom, CA | Sacramento | Installer (C-42) | 1052318 |
| 5 Star Plumbing Heating & Air Inc | Hemet, CA | Riverside | Installer (C-42) | 1014340 |
| 530 Pipe Flow | Auburn, CA | Placer | Installer (C-42) | 1127952 |
| 831 Pld Enterprises Inc | Carmel Valley, CA | Monterey | Installer (C-42) | 514106 |
| A - Plus Septic And Drain | Yucca Valley, CA | San Bernardino | Installer (C-42) | 997433 |
| A & A Plumbing And Rooter Service | Riverside, CA | Riverside | Installer (C-42) | 406229 |
| A & B Malibu Plumbing Heating & Electrical | Santa Monica, CA | Los Angeles | Installer (C-42) | 722368 |
| A & J Plumbing And Rooter | Wilmington, CA | Los Angeles | Installer (C-42) | 889571 |
| A & M Pump & Plumbing | Alturas, CA | Modoc | Installer (C-42) | 256441 |
| A & S Landscape Construction Inc | Valley Center, CA | San Diego | Installer (C-42) | 1101324 |
| A & Y Sanitation Systems | Granada Hills, CA | Los Angeles | Installer (C-42) | 1054125 |
| A + Superior Sanitation Inc | Acton, CA | Los Angeles | Installer (C-42) | 826108 |
| A F D Demolition & Plumbing | Lawndale, CA | Los Angeles | Installer (C-42) | 1038939 |
| A M C Septic Contractors Inc | Corona, CA | Riverside | Installer (C-42) | 982636 |
| A M P Manufactured Home Specialist Inc | Menifee, CA | Riverside | Installer (C-42) | 997499 |
| A O Reed & Co Llc | San Diego, CA | San Diego | Installer (C-42) | 7731 |
| A P I Plumber Contractors Inc | Whittier, CA | Los Angeles | Installer (C-42) | 986893 |
| A P S Environmental Inc | North Highlands, CA | Sacramento | Installer (C-42) | 985553 |
| A S A P Pumping Inc | Cathedral City, CA | Riverside | Installer (C-42) | 855851 |
| A-1 Bay Area Rooter & Plumbing | Oakland, CA | Alameda | Installer (C-42) | 1116691 |
| A-1 Septic Tank Service | Littleriver, CA | Mendocino | Installer (C-42) | 838308 |
| A-1 Septic Tank Service Inc | Hayward, CA | Alameda | Installer (C-42) | 438710 |
| A-1 Sewer Construction | Sylmar, CA | Los Angeles | Installer (C-42) | 1052571 |
| A-Jay Excavating Inc | Atascadero, CA | San Luis Obispo | Installer (C-42) | 456026 |
| A+ Waterworks Inc | American Canyon, CA | Napa | Installer (C-42) | 745951 |
| A1 Construction | San Bernardino, CA | San Bernardino | Installer (C-42) | 817084 |
| A1 Septic Services | El Cajon, CA | San Diego | Installer (C-42) | 1080434 |
| A1 Sewer Solutions | Los Angeles, CA | Los Angeles | Installer (C-42) | 1074336 |
| A1-Perez Plumbing, Electric & Pipelines | Los Angeles, CA | Los Angeles | Installer (C-42) | 910949 |
| Aaa Plumbing & Remodeling Inc | Castro Valley, CA | Alameda | Installer (C-42) | 1052769 |
| Aaa Septic And Rooter | French Camp, CA | San Joaquin | Installer (C-42) | 811037 |
| Aaa Septic Services Llc | Chico, CA | Butte | Installer (C-42) | 1143342 |
| Aaron Plumbing | Vacaville, CA | Solano | Installer (C-42) | 352544 |
| Aas Sanitation | Perris, CA | Riverside | Installer (C-42) | 1127701 |
| Abbott Construction & Plumbing | Salinas, CA | Monterey | Installer (C-42) | 469680 |
| Abc Plumbing Heating And Air Conditioning | Sacramento, CA | Sacramento | Installer (C-42) | 412127 |
| Abc Service | Sacramento, CA | Sacramento | Installer (C-42) | 844025 |
| Able Plumbing Sewer And Drain | San Jose, CA | Santa Clara | Installer (C-42) | 1063451 |
| Able Septic | San Jose, CA | Santa Clara | Installer (C-42) | 677475 |
| Above All Plumbing Inc | Newark, CA | Alameda | Installer (C-42) | 739199 |
| Academy Mechanical Inc | Laguna Woods, CA | Orange | Installer (C-42) | 457040 |
| Access Sewer | Pine Grove, CA | Amador | Installer (C-42) | 1117639 |
| Acco Engineered Systems | Pasadena, CA | Los Angeles | Installer (C-42) | 120696 |
| Acco-Wilson, Inc | Pasadena, CA | Los Angeles | Installer (C-42) | 1042403 |
| Ace Drain | Valencia, CA | Los Angeles | Installer (C-42) | 1030347 |
| Ace Pelizon Plumbing | Covina, CA | Los Angeles | Installer (C-42) | 1154407 |
| Ace Plumbing Heating & Air | Sacramento, CA | Sacramento | Installer (C-42) | 313506 |
| Ace Sewer Lateral Contractor | Hayward, CA | Alameda | Installer (C-42) | 994389 |
| Acosta & Sons Sewer Contractor | Glendale, CA | Los Angeles | Installer (C-42) | 273035 |
| Action Pumping Inc | Yucca Valley, CA | San Bernardino | Installer (C-42) | 436154 |
| Ads Consulting | Descanso, CA | San Diego | Installer (C-42) | 1119362 |
| Advanced Demolition Contractors Inc | North Hollywood, CA | Los Angeles | Installer (C-42) | 1095873 |
| Advanced Sanitation | Camarillo, CA | Ventura | Installer (C-42) | 1014079 |
| Advanced Septic Systems Llc | La Mesa, CA | San Diego | Installer (C-42) | 1152708 |
| Advanced Trenchless Inc | Martinez, CA | Contra Costa | Installer (C-42) | 971074 |
| Advanced Underground Systems | Riverside, CA | Riverside | Installer (C-42) | 879314 |
| Advantage Septic Systems | Menifee, CA | Riverside | Installer (C-42) | 853378 |
| Affordable Septic Installation Inc | Auburn, CA | Placer | Installer (C-42) | 1157025 |
| Affordable Underground Co | Morgan Hill, CA | Santa Clara | Installer (C-42) | 856953 |
| Aggressive Work Inc | Winton, CA | Merced | Installer (C-42) | 1071351 |
| Airco Mechanical Inc | Sacramento, CA | Sacramento | Installer (C-42) | 311454 |
| Akae Builder | San Diego, CA | San Diego | Installer (C-42) | 1008370 |
| Al'S Septic Pumping Service Inc | Los Osos, CA | San Luis Obispo | Installer (C-42) | 883281 |
| Albert Nahman Plumbing Heating And Cooling | Alameda, CA | Alameda | Installer (C-42) | 1083634 |
| Albert'S Plumbing & Drain Service | Santa Cruz, CA | Santa Cruz | Installer (C-42) | 877333 |
| Albion Plumbing & Rooter Inc | San Leandro, CA | Alameda | Installer (C-42) | 899622 |
| Alf Plumbing Inc | Fresno, CA | Fresno | Installer (C-42) | 1109556 |
| All Bay Rooting And Plumbing Services | Lafayette, CA | Contra Costa | Installer (C-42) | 821259 |
| All City Plumbing Drain And Sewer Services Inc | Beverly Hills, CA | Los Angeles | Installer (C-42) | 760199 |
| All In Pumping & Septic Inc | Ramona, CA | San Diego | Installer (C-42) | 1097773 |
| All Plumbing & Drain Solutions | Redding, CA | Shasta | Installer (C-42) | 1023563 |
| All State Earth Moving Company | Fontana, CA | San Bernardino | Installer (C-42) | 1101475 |
| All Terrain Backhoe Service | Fallbrook, CA | San Diego | Installer (C-42) | 880756 |
| All Water Heaters & Plumbing Llc | Concord, CA | Contra Costa | Installer (C-42) | 1143044 |
| Allcaljet Inc | Lancaster, CA | Los Angeles | Installer (C-42) | 919807 |
| Alliance Septic | Paso Robles, CA | San Luis Obispo | Installer (C-42) | 1009043 |
| Alms Underground Construction Inc | Cathedral City, CA | Riverside | Installer (C-42) | 482180 |
| Alpine Earth Moving | Auburn, CA | Placer | Installer (C-42) | 883181 |
| Altruistic Construction Services | Winchester, CA | Riverside | Installer (C-42) | 968580 |
| Amacker Construction Co | South Lake Tahoe, CA | El Dorado | Installer (C-42) | 1050583 |
| Amador Mechanical Inc | Plymouth, CA | Amador | Installer (C-42) | 501343 |
| Amaro Corp | Campbell, CA | Santa Clara | Installer (C-42) | 926496 |
| American Contractors Inc | Orange, CA | Orange | Installer (C-42) | 309863 |
| American Integrated Services Inc | Long Beach, CA | Los Angeles | Installer (C-42) | 757133 |
| American Pipe Bursting Llc | Martinez, CA | Contra Costa | Installer (C-42) | 1039462 |
| American Septic Services Inc | San Bernardino, CA | San Bernardino | Installer (C-42) | 887324 |
| Amigo Rooter & Plumbing | Livermore, CA | Alameda | Installer (C-42) | 917521 |
| Amos Excavation | Coulterville, CA | Mariposa | Installer (C-42) | 837251 |
| Anderson Construction Company & Sons | Wrightwood, CA | San Bernardino | Installer (C-42) | 334940 |
| Anderson Rowe & Buckley Inc | San Francisco, CA | San Francisco | Installer (C-42) | 91594 |
| Angel Industries Co | Camarillo, CA | Ventura | Installer (C-42) | 892927 |
| Angels Plumbing And Rooter Inc | Van Nuys, CA | Los Angeles | Installer (C-42) | 851901 |
| Angels Sewer & Drain Inc | Angels Camp, CA | Calaveras | Installer (C-42) | 798432 |
| Anytime Rooter | Marina Del Rey, CA | Los Angeles | Installer (C-42) | 1099330 |
| Anytime Septic Service Inc | Santee, CA | San Diego | Installer (C-42) | 1145830 |
| Anza Valley Backhoe Service | Anza, CA | Riverside | Installer (C-42) | 616535 |
| Api Builders Inc | Fallbrook, CA | San Diego | Installer (C-42) | 844420 |
| Aqua Stat Plumbing Inc | Hayward, CA | Alameda | Installer (C-42) | 1042922 |
| Aranda'S Sanitation Systems | Ontario, CA | San Bernardino | Installer (C-42) | 1053122 |
| Arce General Engineering Construction | Oxnard, CA | Ventura | Installer (C-42) | 839000 |
| Armac Excavating & Paving Llc | Carson City, NV | — | Installer (C-42) | 1074871 |
| Armstrong Plumbing Inc | Sacramento, CA | Sacramento | Installer (C-42) | 364321 |
| Aro Wastewater Systems | Woodland, CA | Yolo | Installer (C-42) | 1151368 |
| Austin Creek Services Inc | Santa Rosa, CA | Sonoma | Installer (C-42) | 1054040 |
| Avalon Rooter | Richmond, CA | Contra Costa | Installer (C-42) | 1067780 |
| Axner Excavating Inc | Redding, CA | Shasta | Installer (C-42) | 613824 |
| Axxess Plumbing And Rooter Inc | Palmdale, CA | Los Angeles | Installer (C-42) | 974244 |
| Aztec Septic | Murrieta, CA | Riverside | Installer (C-42) | 874529 |
| B & L Mechanical Inc | Fresno, CA | Fresno | Installer (C-42) | 492481 |
| B & W Bobcat Services | Hayfork, CA | Trinity | Installer (C-42) | 996408 |
| B M D Construction | Moorpark, CA | Ventura | Installer (C-42) | 301780 |
| B.b.c. Rooter And Plumbing | Northridge, CA | Los Angeles | Installer (C-42) | 720343 |
| B&bd Septic Service | Murrieta, CA | Riverside | Installer (C-42) | 1156720 |
| Bacon Plumbing Co Inc | San Francisco, CA | San Francisco | Installer (C-42) | 728650 |
| Bailey Johnathan Ryan | Beaumont, CA | Riverside | Installer (C-42) | 1078309 |
| Ballinger Developments | Yucca Valley, CA | San Bernardino | Installer (C-42) | 832890 |
| Barton Construction Services | Phelan, CA | San Bernardino | Installer (C-42) | 1110025 |
| Bass Tim Construction | Madera, CA | Madera | Installer (C-42) | 639685 |
| Bass Timothy Inc | Madera, CA | Madera | Installer (C-42) | 884137 |
| Bay Flow Sewers | San Pablo, CA | Contra Costa | Installer (C-42) | 1155098 |
| Bay Plumbing & Rooter Llc | Rodeo, CA | Contra Costa | Installer (C-42) | 929458 |
| Brimhall George H | Phoenix, AZ | — | Installer (C-42) | 281376 |
| Champion Cleaning Specialists Inc | Cincinnati, OH | — | Installer (C-42) | 1105799 |
| Flush Right Drain Cleaning | Honolulu, HI | — | Installer (C-42) | 1063633 |
| Gardner Septic Service Inc | Poolville, TX | — | Installer (C-42) | 873639 |
| Gregg Underground Excavating Inc | Stateline, NV | — | Installer (C-42) | 528993 |
| Hartwig Construction | Livingston, MT | — | Installer (C-42) | 393649 |
| Jensen Precast | Reno, NV | — | Installer (C-42) | 830643 |
| Rescue Rooter | Memphis, TN | — | Installer (C-42) | 765155 |
| Sass Plumbing Company S P C | Chiloquin, OR | — | Installer (C-42) | 818827 |
| Savage & Son Inc | Reno, NV | — | Installer (C-42) | 37844 |
| Sierra Nevada Excavation Inc | Smith, NV | — | Installer (C-42) | 914130 |
| Tga Builders Inc | Las Vegas, NV | — | Installer (C-42) | 1126206 |
| Torrent Resources Ca Incorporated | Phoenix, AZ | — | Installer (C-42) | 886759 |
| Torrent Resources Incorporated | Phoenix, AZ | — | Installer (C-42) | 528080 |
Most directories only tell you who to call. These are the cases where the honest answer is that you may not need this service at all, and the mistakes that cost people the most money.
Typical septic pumping pricing, with sources: what this costs in CA →
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