| Company | Location | Certifications | License # |
|---|---|---|---|
| B & R Construction | Elizabethton, TN | Installer (Type C) | 10617 |
| Barker Enterprises, Llc | Elizabethton, TN | Installer (Type C) | 12159 |
| Blue Pines Consulting, LLC | Blountville, TN | Installer | 10050 |
| Bobby Trivette | butler, TN | Installer (Type C) | 11717 |
| Bryan K. Slagle Construction | Watauga, TN | Installer (Type C) | 1015 |
| C & L Construction | Roan Mountain, TN | Installer (Type C) | 1011 |
| Campbell Construction | Butler, TN | Installer (Type C) | 1301 |
| Chambers Logging and Excavating | Roan Mountain, TN | Installer (Type C) | 17880 |
| Cornett Service Group | Watauga, TN | Installer (Type C) | 11456 |
| Curtis Septic Services | Erwin, TN | Pumper | 966 |
| Curtiss Carden | Hampton, TN | Installer | 5039 |
| Doug Slagle Construction | Elizabethton, TN | Installer (Type C) | 1006 |
| Garry Smith | Bluff City, TN | Installer | 2242 |
| Gcs, Inc. | Johnson City, TN | Installer (Type C) | 11240 |
| Greg Burrell | Hampton, TN | Installer (Type C) | 12944 |
| Guinn construction | Elizabethton, TN | Installer (Type C) | 1151 |
| Hill Septic | Elizabethton, TN | Pumper | 166 |
| Josh Fair | Elizabethton, TN | Installer (Type CL) | 13757 |
| K & M Construction | Elizabethton, TN | Installer (Type C) | 10314 |
| Kirby smith | Johnson city, TN | Installer | 5191 |
| L and L Farms | Greeneville, TN | Installer | 14327 |
| Lee Kaylor | bluff city, TN | Installer | 18322 |
| Michael scalf | Elizabethton, TN | Installer (Type C) | 1089 |
| Onsite Construction, Inc. | Elizabethton, TN | Installer (Type CL) | 12865 |
| Paragon Contracting, LLC | Kingsport, TN | Installer | 14328 |
| R&R Construction | hampton, TN | Installer (Type C) | 10852 |
| Raymond H. Ward | Elizabethton, TN | Installer (Type C) | 909 |
| Recovery Soldiers Ministries | Elizabethton, TN | Installer (Type C) | 17915 |
| Robbins Trucking & Land Clearing | Elizabethton, TN | Installer (Type C) | 13074 |
| Roberts construction | Elizabethton, TN | Installer (Type C) | 1088 |
| Sheffield Construction | Elizabethton, TN | Installer (Type C) | 1009 |
| Sidekick Excavation | Elizabethton, TN | Installer (Type C) | 12248 |
| Street and Son Excavating | Roan Mountain, TN | Installer (Type C) | 17895 |
| Tony'S Tractor Services | Johnson City, TN | Installer (Type C) | 12922 |
| Travis McNeal | Elizabethton, TN | Installer (Type C) | 18202 |
35 companies in the TDEC active septic system installers & pumpers lists are based in Carter County as of 2026-07-23. Companies based elsewhere in Tennessee also commonly serve the county.
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