| Company | Location | Certifications | License # |
|---|---|---|---|
| A & B Malibu Plumbing Heating & Electrical | Santa Monica, CA | Installer (C-42) | 722368 |
| A & J Plumbing And Rooter | Wilmington, CA | Installer (C-42) | 889571 |
| A & Y Sanitation Systems | Granada Hills, CA | Installer (C-42) | 1054125 |
| A + Superior Sanitation Inc | Acton, CA | Installer (C-42) | 826108 |
| A F D Demolition & Plumbing | Lawndale, CA | Installer (C-42) | 1038939 |
| A P I Plumber Contractors Inc | Whittier, CA | Installer (C-42) | 986893 |
| A-1 Sewer Construction | Sylmar, CA | Installer (C-42) | 1052571 |
| A1 Sewer Solutions | Los Angeles, CA | Installer (C-42) | 1074336 |
| A1-Perez Plumbing, Electric & Pipelines | Los Angeles, CA | Installer (C-42) | 910949 |
| Acco Engineered Systems | Pasadena, CA | Installer (C-42) | 120696 |
| Acco-Wilson, Inc | Pasadena, CA | Installer (C-42) | 1042403 |
| Ace Drain | Valencia, CA | Installer (C-42) | 1030347 |
| Ace Pelizon Plumbing | Covina, CA | Installer (C-42) | 1154407 |
| Acosta & Sons Sewer Contractor | Glendale, CA | Installer (C-42) | 273035 |
| Advanced Demolition Contractors Inc | North Hollywood, CA | Installer (C-42) | 1095873 |
| All City Plumbing Drain And Sewer Services Inc | Beverly Hills, CA | Installer (C-42) | 760199 |
| Allcaljet Inc | Lancaster, CA | Installer (C-42) | 919807 |
| American Integrated Services Inc | Long Beach, CA | Installer (C-42) | 757133 |
| Angels Plumbing And Rooter Inc | Van Nuys, CA | Installer (C-42) | 851901 |
| Anytime Rooter | Marina Del Rey, CA | Installer (C-42) | 1099330 |
| Axxess Plumbing And Rooter Inc | Palmdale, CA | Installer (C-42) | 974244 |
| B.b.c. Rooter And Plumbing | Northridge, CA | Installer (C-42) | 720343 |
| Bea Thomas T | El Monte, CA | Installer (C-42) | 532381 |
| Blue Crew Plumbing & Rooter Inc | Castaic, CA | Installer (C-42) | 997996 |
| Blue Muscle Plumbing And Rooter Service | Lancaster, CA | Installer (C-42) | 1055675 |
| Bob & Marc Plumbing Co | Torrance, CA | Installer (C-42) | 689679 |
| Bob'S Rooter & Plumbing Co | Santa Clarita, CA | Installer (C-42) | 426215 |
| Boss Plumbing Company | Los Angeles, CA | Installer (C-42) | 579704 |
| Bottala John Lawrence | Sierra Madre, CA | Installer (C-42) | 1016647 |
| Brandel Don Plumbing Inc | Paramount, CA | Installer (C-42) | 176778 |
| Burns Raymond | Lakewood, CA | Installer (C-42) | 974730 |
| Carter Sanitation | Whittier, CA | Installer (C-42) | 268016 |
| Century Sewer Services | Monrovia, CA | Installer (C-42) | 626528 |
| Cjs Construction Inc | San Fernando, CA | Installer (C-42) | 1021602 |
| Coast To Coast Plumbing And Rooter | Sherman Oaks, CA | Installer (C-42) | 936718 |
| Coblentz Plumbing And Sewer Contractors | Burbank, CA | Installer (C-42) | 693030 |
| Construction 1 Services | Northridge, CA | Installer (C-42) | 985097 |
| Cordova Daniel Plumbing Inc | Whittier, CA | Installer (C-42) | 964011 |
| Covenant Pipeline Hydro & Rooter Service Inc | Long Beach, CA | Installer (C-42) | 868652 |
| Craftsman Sewers | San Dimas, CA | Installer (C-42) | 1069089 |
| D V B E Mechanical Inc | Long Beach, CA | Installer (C-42) | 1018933 |
| Danielson Construction | El Monte, CA | Installer (C-42) | 1071222 |
| Deluca Jack V | Sylmar, CA | Installer (C-42) | 436865 |
| Designer Plumbing & Air Inc | Bellflower, CA | Installer (C-42) | 950508 |
| Devries Diversified | Tujunga, CA | Installer (C-42) | 535260 |
| Doty Bros Construction Co | Norwalk, CA | Installer (C-42) | 273024 |
| Drain & Plumbing Pros Inc | Torrance, CA | Installer (C-42) | 1073582 |
| Drain Force Plumbing | Harbor City, CA | Installer (C-42) | 1022967 |
| Drain King | Whittier, CA | Installer (C-42) | 824200 |
| E & R Construction Inc | Baldwin Park, CA | Installer (C-42) | 449476 |
| Ed O'Neill Construction Inc | Topanga, CA | Installer (C-42) | 1023632 |
| El Dorado Demolition | Lake View Terrace, CA | Installer (C-42) | 868824 |
| Elite Plumbing & Hydro-Jetting Inc | Whittier, CA | Installer (C-42) | 1018006 |
| Elite Plumbing & Rooter | Los Angeles, CA | Installer (C-42) | 778468 |
| Epd Construction Inc | Carson, CA | Installer (C-42) | 838432 |
| Escobar Contracting Inc | Los Angeles, CA | Installer (C-42) | 747724 |
| Evaluation & Remediation Services | Lancaster, CA | Installer (C-42) | 807968 |
| Express Plumbing & Rooter | Sylmar, CA | Installer (C-42) | 796478 |
| Fermin'S Ultimate Plumbing Inc | Chatsworth, CA | Installer (C-42) | 861753 |
| Flamingo Construction Inc | Studio City, CA | Installer (C-42) | 999182 |
| Fpc Industrial Plumbing | Canyon Country, CA | Installer (C-42) | 747675 |
| Frausto Gabriel Underground Construction Inc | Walnut, CA | Installer (C-42) | 1040416 |
| Fuentes Plumbing | Sylmar, CA | Installer (C-42) | 778596 |
| Fuentes Plumbing Inc | Sylmar, CA | Installer (C-42) | 1108072 |
| G Valdivia Construction | Santa Monica, CA | Installer (C-42) | 399010 |
| Gch Plumbing Inc | Los Angeles, CA | Installer (C-42) | 842253 |
| Geo H Wilson Mechanical Contractors | Pasadena, CA | Installer (C-42) | 950443 |
| Gm Plumbing Septic And Sewer Inc | Palmdale, CA | Installer (C-42) | 874595 |
| Go Green Rooters Services | Porter Ranch, CA | Installer (C-42) | 926504 |
| Go Green Rooters Services Inc | Porter Ranch, CA | Installer (C-42) | 1083223 |
| Gopher Construction | Tujunga, CA | Installer (C-42) | 601749 |
| Gorsuch Plumbing & Heating And A C E Air Conditioning | Signal Hill, CA | Installer (C-42) | 231942 |
| Grab Construction Inc | Arcadia, CA | Installer (C-42) | 527006 |
| Grbavac M Construction Co Inc | Arcadia, CA | Installer (C-42) | 417030 |
| Grbcon Inc | Baldwin Park, CA | Installer (C-42) | 1012408 |
| Gump Andy Inc | Santa Clarita, CA | Installer (C-42) | 357789 |
| H L Moe Co Inc | Glendale, CA | Installer (C-42) | 254678 |
| Haun Construction | Agoura, CA | Installer (C-42) | 454285 |
| Helmandi Roshawn | Northridge, CA | Installer (C-42) | 1043209 |
| Hickman & Son Mechanical Llc | Azusa, CA | Installer (C-42) | 451069 |
| Hickman C R & Co | Azusa, CA | Installer (C-42) | 433084 |
| High Lights | Sylmar, CA | Installer (C-42) | 418952 |
| Honest Plumbing & Rooter Inc | Sylmar, CA | Installer (C-42) | 900829 |
| International City Plumbers | Long Beach, CA | Installer (C-42) | 1025221 |
| J & D Contractors Inc | Long Beach, CA | Installer (C-42) | 462161 |
| J T Sanitation | Lancaster, CA | Installer (C-42) | 621539 |
| Jordahl Construction Inc | Avalon, CA | Installer (C-42) | 727811 |
| Kreit Mechanical Associates Inc | North Hollywood, CA | Installer (C-42) | 819950 |
| L & S Development Inc | Littlerock, CA | Installer (C-42) | 892569 |
| L M Olson Inc | Acton, CA | Installer (C-42) | 1006578 |
| La Salle Plumbing Heating & Air Conditioning Inc | Lomita, CA | Installer (C-42) | 679381 |
| Lafrance Andre Pierre Hydroman Rooter | Inglewood, CA | Installer (C-42) | 778117 |
| Leedco Tech Inc | Pasadena, CA | Installer (C-42) | 1069862 |
| Lighthart Corporation The | Los Angeles, CA | Installer (C-42) | 593113 |
| M & M Trenchless Sewer Pipe Lining Inc | Reseda, CA | Installer (C-42) | 1091058 |
| M G Construction | Baldwin Park, CA | Installer (C-42) | 364584 |
| Magical Building And Construction | Burbank, CA | Installer (C-42) | 1155382 |
| Malibu Plumbing Inc | Malibu, CA | Installer (C-42) | 932250 |
| Malibu Underground Utilities Inc | Marina Del Rey, CA | Installer (C-42) | 1032051 |
| Master Rooter & Plumbing Inc | Paramount, CA | Installer (C-42) | 1044408 |
| Mattucci Plumbing Incorporated | Gardena, CA | Installer (C-42) | 770059 |
| Merry Plumbing Co Inc | San Marino, CA | Installer (C-42) | 860445 |
| Mike Diamond Plumbing Heating & Air Conditioning | Culver City, CA | Installer (C-42) | 399170 |
| Miracle Rooter & Plumbing | Burbank, CA | Installer (C-42) | 875657 |
| Montesinos Cesar Andree | Littlerock, CA | Installer (C-42) | 1122703 |
| Mosser Plumbing & Heating Inc | Marina Del Rey, CA | Installer (C-42) | 497428 |
| Mr Rooter Plumbing | Montebello, CA | Installer (C-42) | 851276 |
| My Drain Company Inc | Sylmar, CA | Installer (C-42) | 976969 |
| National Plant Services Inc | Long Beach, CA | Installer (C-42) | 351503 |
| P & M Drainology Llc | Glendora, CA | Installer (C-42) | 1083561 |
| P P S Plumbing Corp | Azusa, CA | Installer (C-42) | 1001177 |
| Pace Setter Plumbing Corporation | Lancaster, CA | Installer (C-42) | 544777 |
| Panico Sanitation | Agua Dulce, CA | Installer (C-42) | 1090540 |
| Pastusak Plumbing Inc | Lakewood, CA | Installer (C-42) | 1028495 |
| Paul Roberts | Rosemead, CA | Installer (C-42) | 839456 |
| Peninsula Septic Service Inc | San Pedro, CA | Installer (C-42) | 800772 |
| Perez Construction & Pipelines Inc | Los Angeles, CA | Installer (C-42) | 1054237 |
| Pipe Detective Plumbers | La Crescenta, CA | Installer (C-42) | 1006781 |
| Pipe Doctor Rooter & Plumbing Company | Los Angeles, CA | Installer (C-42) | 1084191 |
| Plumb Pro-Service One | Rancho Palos Verdes, CA | Installer (C-42) | 614785 |
| Plumber Hero General Drainworks Jv | Mission Hills, CA | Installer (C-42) | 1156356 |
| Pournahavandi Fatemah | Rancho Palos Verdes, CA | Installer (C-42) | 1033970 |
| Power Pro Plumbing Heating & Air Inc | Torrance, CA | Installer (C-42) | 766254 |
| Precision Septic & Excavation Llc | South El Monte, CA | Installer (C-42) | 1153953 |
| Quick-Flo Plumbing & Rooter Inc | Van Nuys, CA | Installer (C-42) | 1064754 |
| R S One Plumbing | Burbank, CA | Installer (C-42) | 668384 |
| Rapid Plumbing | Culver City, CA | Installer (C-42) | 771663 |
| Red Hat Plumbing | Studio City, CA | Installer (C-42) | 1027638 |
| Rollin Rooter & Plumbing | Long Beach, CA | Installer (C-42) | 746598 |
| Rooter Hero | Mission Hills, CA | Installer (C-42) | 1028886 |
| Rooter Master Plumbing Services Inc | Northridge, CA | Installer (C-42) | 754416 |
| Rooter Shooter | Diamond Bar, CA | Installer (C-42) | 800418 |
| Rooter-Man Plumbing | Sylmar, CA | Installer (C-42) | 1008855 |
| Roth E Z Plumbing Inc | Los Angeles, CA | Installer (C-42) | 741375 |
| Royal Rooter And Plumbing | Gardena, CA | Installer (C-42) | 751946 |
| Sahakyan Artur | Granada Hills, CA | Installer (C-42) | 1026178 |
| Service Wizards | Diamond Bar, CA | Installer (C-42) | 797071 |
| Sewer And Pipeline Contractor Inc | Los Angeles, CA | Installer (C-42) | 904635 |
| Sewer Brothers Plumbing And Rooter Inc The | Chatsworth, CA | Installer (C-42) | 1083074 |
| Sewer Company The | Duarte, CA | Installer (C-42) | 1104718 |
| Sewer Line Video Inspection Company Inc | Woodland Hills, CA | Installer (C-42) | 409564 |
| Sewer Pipe Pros Inc | Los Angeles, CA | Installer (C-42) | 1126184 |
| Shields Sewer Contracting | Torrance, CA | Installer (C-42) | 782428 |
| Smith Roy E Plumbing Co Inc | Los Angeles, CA | Installer (C-42) | 179873 |
| So Cal Sewer & Water | Long Beach, CA | Installer (C-42) | 1029948 |
| Speedy Plumbing | North Hollywood, CA | Installer (C-42) | 674284 |
| Springwater Plumbing Inc | Winnetka, CA | Installer (C-42) | 1074362 |
| Staats Construction Inc | Castaic, CA | Installer (C-42) | 842398 |
| Suncore Engineering And Construction | Beverly Hills, CA | Installer (C-42) | 1145133 |
| Sunrise Landscape Co Inc | Santa Fe Springs, CA | Installer (C-42) | 266132 |
| Super Drains | Los Angeles, CA | Installer (C-42) | 1023035 |
| Team Rooter Inc | Sun Valley, CA | Installer (C-42) | 1028818 |
| Team Rooter Orange County Inc | Sun Valley, CA | Installer (C-42) | 1080965 |
| Tom'S Rooter Service | Alhambra, CA | Installer (C-42) | 701931 |
| Top Rooter Inc | South Gate, CA | Installer (C-42) | 946869 |
| Topanga Engineering Design And Construction Inc | Canoga Park, CA | Installer (C-42) | 1067492 |
| Topanga Plumbing | West Hills, CA | Installer (C-42) | 663933 |
| Topanga Septic | Topanga, CA | Installer (C-42) | 1019132 |
| Torres Sanitation Systems Construction | South Gate, CA | Installer (C-42) | 1052723 |
| Troy Plumbing Inc | Culver City, CA | Installer (C-42) | 1002083 |
| United Pumping Service Inc | City Of Industry, CA | Installer (C-42) | 617639 |
| United Storm Water Inc | City Of Industry, CA | Installer (C-42) | 768583 |
| Universal Demolition Services Inc | Pacoima, CA | Installer (C-42) | 872986 |
| Universal Plumbers Inc | Canyon Country, CA | Installer (C-42) | 1144025 |
| V - Max Plumbing & Construction | Torrance, CA | Installer (C-42) | 995202 |
| Valley Drains Inc | Chatsworth, CA | Installer (C-42) | 735565 |
| Valley Sanitation | Quartz Hill, CA | Installer (C-42) | 1051148 |
| Vhl Plumbing Inc | Burbank, CA | Installer (C-42) | 492079 |
| Victor'S Rooter & Plumbing Svc | Sylmar, CA | Installer (C-42) | 1004608 |
| Viens Sandra L | Torrance, CA | Installer (C-42) | 622834 |
| West Coast Chlorination Inc | Bellflower, CA | Installer (C-42) | 1152176 |
| Williams John H | Mission Hills, CA | Installer (C-42) | 314848 |
| Williams Pipeline Contractors Inc | Mission Hills, CA | Installer (C-42) | 353528 |
| Wilner Plumbing | Granada Hills, CA | Installer (C-42) | 656826 |
174 companies in the CSLB Licensed C-42 Sanitation System Contractors are based in Los Angeles County as of 2026-07-23. Companies based elsewhere in California also commonly serve the county.
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