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| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| S&R Septic Tanks | Angie, LA | — | Installer (Basic)Installer (Combination) | 31223 |
| S&S Sewer Systems, LLC | Church Point, LA | — | Installer (Basic)Installer (Combination) | 1093 |
| Sancta Maria Services LLC | Reeves, LA | — | Installer (Basic)Installer (Combination) | 31994 |
| SC Inc. Precast | Slidell, LA | — | Installer (Basic)Installer (Combination) | 31782 |
| Scott Cantrelle | Barataria, LA | — | Installer (Basic)Installer (Combination) | 31618 |
| Self Construction | Mangham, LA | — | Installer (Basic)Installer (Combination) | 40084 |
| Septic Plus, LLC | Ruston, LA | — | Installer (Basic)Installer (Combination) | 32373 |
| Septic Solutions of Downsville | Downsville, LA | — | Installer (Basic)Installer (Combination) | 31990 |
| Sewer Treatment Specialists LLC | Denham Springs, LA | — | Installer (Basic)Installer (Combination)Installer (Maintenance) | 32055 |
| Shuler Enterprises | Chatham, LA | — | Installer (Basic)Installer (Combination) | 13 |
| Simple Sewer Solutions | Grayson, LA | — | Installer (Basic)Installer (Combination) | 32333 |
| Simply Septic Inc. | Schriever, LA | — | Installer (Basic)Installer (Combination) | 40027 |
| Skinner Septic Systems | Homer, LA | — | Installer (Basic)Installer (Combination) | 30239 |
| SMD Water and Sewer LLC | Dubach, LA | — | Installer (Basic)Installer (Combination) | 31376 |
| Smooth Finish Concrete LLC | Opelousas, LA | — | Installer (Basic)Installer (Combination) | 31809 |
| Southeast Water Well Drilling LLC | Amite, LA | — | Installer (Basic)Installer (Combination) | 31838 |
| Southern Utilities | DeRidder, LA | — | Installer (Basic)Installer (Combination) | 31974 |
| Speed Construction Services | Church Point, LA | — | Installer (Basic)Installer (Combination) | 31897 |
| Spring Creek Septic | Kentwood, LA | — | Installer (Basic)Installer (Combination) | 40042 |
| St. Amant Septic | St. Amant, LA | — | Installer (Basic)Installer (Combination) | 32316 |
| St. Pierre Construction | Galliano, LA | — | Installer (Basic)Installer (Combination) | 32452 |
| Stansbury Septic Systems | Rayville, LA | — | Installer (Basic)Installer (Combination)Installer (Maintenance) | 126 |
| Star Hill Environmental Construction LLC | Jackson, LA | — | Installer (Basic)Installer (Combination) | 32395 |
| STAT Waste Stream Services, Inc. | Houma, LA | — | Installer (Basic)Installer (Combination)Installer (Maintenance) | 30123 |
| Steib's Dozer and Backhoe Service LLC | Lottie, LA | — | Installer (Basic)Installer (Combination) | 30229 |
| Stephen Schultz Plumbing & Heating LLC | Kenner, LA | — | Installer (Basic) | 40110 |
| Steve Dupont Backhoe Work | Mansura, LA | — | Installer (Basic)Installer (Combination) | 473 |
| Stubblefield Wastewater Solutions | Delhi, LA | — | Installer (Basic)Installer (Combination) | 40070 |
| Sweet Cheeks Septic | Rayville, LA | — | Installer (Basic)Installer (Combination) | 32439 |
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