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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| C & M Plumbing & Electric | Nettleton, MS | — | Installer | — |
| C And A Warren Services, Llc | Laurel, MS | — | Installer | — |
| C And R Sanford | Laurel, MS | — | Installer | — |
| C/S Septic Service | Tylertown, MS | — | Installer | — |
| C&C Contractors | Leakesville, MS | — | Installer | — |
| C&J Sewer Treatment Plants, Llc | Pearl River, LA | — | Pumper | — |
| Cadamy Contracting Llc | Mooreville, MS | — | Installer | — |
| Carroll'S Construction | Amory, MS | — | Installer | — |
| Carter Construction & Plumbing, Llc | Indianola, MS | — | Installer | — |
| Carter, Bradley (Probationary) | Bogue Chitto, MS | — | Installer | — |
| Cb Septic Pumping Llc | Columbia, MS | — | Installer | — |
| Cb Septic Pupmping Llc | Columbia, MS | — | Pumper | — |
| Century Sanitation Llc | Longview, TX | — | Pumper | — |
| Certified Home Inspections, Llc | Collinsville, MS | — | Installer | — |
| Certified Septic | Laurel, MS | — | Installer | — |
| Certified Septic, Inc. | Laurel, MS | — | Installer | — |
| Chambers Services | Ackerman, MS | — | Installer | — |
| Chambers Services, Llc | Ackerman, MS | — | Installer | — |
| Chapman Enterprises | Batesville, MS | — | Installer | — |
| Chickasaw Plumbing | Houston, MS | — | Installer | — |
| Chris'S Septic Service | Picayune, MS | — | Pumper | — |
| Chris'S Septic Tank Service | Picayune, MS | — | Installer | — |
| Circle S Inc. | New Hebron, MS | — | Pumper | — |
| Clardy Well Drilling | Columbus, MS | — | Installer | — |
| Clark Bond & Son | Perkinston, MS | — | Installer | — |
| Clark Bond & Son, Llc | Perkinston, MS | — | Installer | — |
| Classic Plumbing | Petal, MS | — | Installer | — |
| Clear Flow Septic Systems | Oxford, MS | — | Installer | — |
| Clear Path Earthworks & Septic | Coldwater, MS | — | Installer | — |
| Cleveland Plumbing & Gas | Cleveland, MS | — | InstallerPumper | — |
| Coastal Sanitation, Llc | Kiln, MS | — | Installer | — |
| Coastal Waste , Inc. | Diberville, MS | — | Pumper | — |
| Coastal Waste Solutions | Slidell, LA | — | Pumper | — |
| Cobb Llc | Pope, MS | — | Installer | — |
| Coleman Contracting, Llc | Florence, MS | — | Installer | — |
| Collins Construction Co. | Tupelo, MS | — | Installer | — |
| Colonial Plumbing, Inc | Holly Springs, MS | — | Installer | — |
| Comfort Stations, Inc. | Vicksburg, MS | — | Pumper | — |
| Complete Septic Services | Goodman, MS | — | Installer | — |
| Connell Septic Tank Services | Milry, AL | — | Installer | — |
| Cook, Dustin (Probationary) | Grenada, MS | — | Installer | — |
| Cooley, Jason C. | Baldwyn, MS | — | Installer | — |
| Cooper Septic Service, Llc | Slidell, LA | — | InstallerPumper | — |
| Cothern Construction Group, Llc | Vidalia, LA | — | Installer | — |
| Country Construction | Meridian, MS | — | Installer | — |
| Courtney Plumbing | Laurel, MS | — | Installer | — |
| Creative Solutions Construction, Lp | Grenada, MS | — | Installer | — |
| Crumps Electric | Hazlehurst, MS | — | Installer | — |
| Ct Investments, Llc | Batesville, MS | — | Installer | — |
| Cuevas Construction Llc | Poplarville, MS | — | Installer | — |
| Culpepper Construction & Masonry, Llc | Poplarville, MS | — | Installer | — |
| Cummins Dirt And Septic | Rena Lara, MS | — | Installer | — |
| Currently Flowing Construction Pllc | Pontotoc, MS | — | Installer | — |
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