| Company | Location | Certifications | License # |
|---|---|---|---|
| Billy Stout & Sons Excavating | Mountain City, TN | Installer (Type C) | 13509 |
| Bob Stanley | Butler, TN | Installer (Type C) | 11315 |
| Bobby Fletcher | Butler, TN | Installer (Type C) | 10453 |
| Brushy Fork Environmental Consulting, Inc. | Trade, TN | Installer (Type C) | 15119 |
| Dirt dobbers grading | Mountain city, TN | Installer (Type C) | 14246 |
| Doeville Hauling and Excavating | Butler, TN | Installer | 14370 |
| Earthwork Construction LLC | Butler, TN | Installer (Type CL) | 11108 |
| Eastridge Construction | Mountain City, TN | Installer (Type C) | 13023 |
| Genesis Excavating | Mountain City, TN | Installer | 11085 |
| Jim Phipps Hauling & Excavating | Mountain City, TN | Installer (Type C) | 11223 |
| Joe Stanley Backhoe Service | Mountain City, TN | Installer (Type C) | 1071 |
| K & K Construction | shady valley, TN | Installer (Type C) | 10546 |
| Larry Woodward Dozer/Backhoe | Mountain City, TN | Installer (Type C) | 12988 |
| STOUT'S PLUMBING 1231a SOUTH SHADY STREET | Mountain City, TN | Installer (Type C) | 12566 |
| Total Home Excavation Inc | Mountain City, TN | Installer | 14331 |
15 companies in the TDEC active septic system installers & pumpers lists are based in Johnson County as of 2026-07-23. Companies based elsewhere in Tennessee also commonly serve the county.
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