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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| C. Adams Construction | Raceland, LA | — | Installer (Basic)Installer (Combination) | 40006 |
| C. Adams Construction | Raceland, LA | — | Installer (Basic)Installer (Combination) | 890 |
| C.T. Septic Service | Evans, LA | — | Installer (Basic)Installer (Combination) | 31099 |
| C.W. Wastewater Systems LLC | Angola, LA | — | Installer (Basic)Installer (Combination) | 31204 |
| C&D Plumbing and Mechanical LLC | Norco, LA | — | Installer (Basic)Installer (Combination) | 31805 |
| C&J Sewer Treatment | Pearl River, LA | — | Installer (Basic)Installer (Combination) | 30291 |
| Capstone, LLC | Shreveport, LA | — | Installer (Basic)Installer (Combination) | 31776 |
| Carriere Construction LLC | Church Point, LA | — | Installer (Basic)Installer (Combination) | 542 |
| Carter's Septic Service | Doyline, LA | — | Installer (Basic)Installer (Combination) | 32161 |
| CB Sewer Systems LLC | Merryville, LA | — | Installer (Basic)Installer (Combination)Installer (Maintenance) | 31840 |
| CDE Construction LLC | Keithville, LA | — | Installer (Basic)Installer (Combination) | 32473 |
| Central Plumbing | Baton Rouge, LA | — | Installer (Basic)Installer (Combination) | 31964 |
| Charles Wagner | Kentwood, LA | — | Installer (Basic)Installer (Combination) | 881 |
| Chef Construction LLC | New Orleans, LA | — | Installer (Basic)Installer (Combination) | 31024 |
| Cherokee Contracting LLC | Jonesboro, LA | — | Installer (Basic)Installer (Combination) | 31516 |
| Chiasson Land Services | Sunset, LA | — | Installer (Basic)Installer (Combination) | 40066 |
| Cielo Construction, LLC | Thibodaux, LA | — | Installer (Basic)Installer (Combination) | 40023 |
| Cielo Construction, LLC | Thibodaux, LA | — | Installer (Basic)Installer (Combination) | 40064 |
| City Plumbing Service Company | Breaux Bridge, LA | — | Installer (Basic)Installer (Combination) | 32408 |
| Clement Septic Service LLC | Jennings, LA | — | Installer (Basic)Installer (Combination)Installer (Maintenance) | 31581 |
| Clement's Sales and Service, Inc. | Labadieville, LA | — | Installer (Basic)Installer (Combination) | 32182 |
| Clement's Sales and Service, Inc. | Labadieville, LA | — | Installer (Basic)Installer (Combination) | 797 |
| CLS Sewer Systems | West Monroe, LA | — | Installer (Basic)Installer (Combination) | 30192 |
| Coastal Mechanical Contractors, Inc. | Houma, LA | — | Installer (Basic)Installer (Combination) | 31089 |
| Cole's Plumbing & Heating | DeVille, LA | — | Installer (Basic)Installer (Combination) | 758 |
| Collins Plumbing | Crowville, LA | — | Installer (Basic)Installer (Combination) | 31988 |
| Comeaux Plumbing & Repair | Raceland, LA | — | Installer (Basic)Installer (Combination)Installer (Maintenance) | 31157 |
| Comeaux Plumbing & Repair | Raceland, LA | — | Installer (Basic)Installer (Combination)Installer (Maintenance) | 40057 |
| Connie's Plumbing & Supply, LLC | Sibley, LA | — | Installer (Basic)Installer (Combination) | 31955 |
| Connie's Plumbing & Supply, LLC | Sibley, LA | — | Installer (Basic)Installer (Combination) | 32281 |
| Cooper Septic Services LLC | Slidell, LA | — | Installer (Basic)Installer (Combination) | 31937 |
| Cooper Unlimited | Franklinton, LA | — | Installer (Basic)Installer (Combination) | 1442 |
| Cormane's Sewer System, LLC | Chopin, LA | — | Installer (Basic)Installer (Combination) | 30547 |
| Cormier's Sewer Service | Maurice, LA | — | Installer (Basic)Installer (Combination) | 32164 |
| Cortez Services, LLC | St. Martinville, LA | — | Installer (Basic)Installer (Combination)Installer (Maintenance) | 32073 |
| Cortez Services, LLC | Duson, LA | — | Installer (Basic)Installer (Combination) | 330 |
| Cotehrn Construction Group LLC | Vidalia, LA | — | Installer (Basic)Installer (Combination) | 31602 |
| Crochet's Trailer Park | Pierre Part, LA | — | Installer (Maintenance) | 31417 |
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