| Company | Location | Certifications | License # |
|---|---|---|---|
| B & R Excavation | Indian Mound, TN | Installer (Type C) | 12920 |
| Barnett Construction | Dover, TN | Installer (Type C) | 12376 |
| Booth Excavating Septics | Dover, TN | Installer (Type C) | 12487 |
| Cottrell Tractor Service | Dover, TN | Installer (Type C) | 12408 |
| CW Cook Construction,Inc. Christopher Cook | Indian Mound, TN | Installer (Type CL) | 11234 |
| Dale Lee Plumbing | Bumpus Mills, TN | Installer (Type C) | 12952 |
| Downhill Plumbing Llc | Big Rock, TN | Installer (Type C) | 14117 |
| Hand Backhoe | Indian Mound, TN | Installer (Type C) | 5185 |
| K Austion Properties LLC / DBA Austion Septic Service | Dover, TN | Installer | 10592 |
| Keith Austin Septic Service | Indian mound, TN | Installer | 14344 |
| Libert Hardscapes and Excavation LLC | Mc Kenzie, TN | Installer | 18307 |
| Randy Angus | Indian Mound, TN | Installer (Type CLM) | 12814 |
| Shannon Parker | Erin, TN | Installer (Type C) | 13783 |
13 companies in the TDEC active septic system installers & pumpers lists are based in Stewart County as of 2026-07-23. Companies based elsewhere in Tennessee also commonly serve the county.
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