| Company | Location | Certifications | License # |
|---|---|---|---|
| Air Fresh LDS Inc | Ardmore, OK | Septage Hauler | 372 |
| Eagle Septic and Shelter | Ardmore, OK | Installer (Aerobic Spray) | 1240 |
| Flanagan Construction & Excavation, LLC | Ardmore, OK | Installer (Subsurface, Lagoon, Aerobic Spray) | 6 |
| Flanagan Construction & Excavation, LLC | Marietta, OK | Septage Hauler | 895 |
| JAG Custom Services LLC | Ardmore, OK | Septage Hauler | 915 |
| Lake Murray Marina | Ardmore, OK | Septage Hauler | 761 |
| Light Aerobic Septic Repair | Lone Grove, OK | Installer (Subsurface, Aerobic Spray) | 1179 |
| MBR Services Inc | Ardmore, OK | Septage Hauler | 781 |
| Posh Portable Restrooms LLC | Ardmore, OK | Septage Hauler | 645 |
| Preston's Backhoe & Dozer Service | Ardmore, OK | Installer (Subsurface, Aerobic Spray) | 604 |
| Raycat Trucking | Ardmore, OK | Septage Hauler | 905 |
| Red River Septic & Shelters, LLC | Mannsville, OK | Installer (Subsurface, Aerobic Spray) | 1112 |
| Texoma Septic Services | Ardmore, OK | Installer (Subsurface, Aerobic Spray) | 732 |
13 companies in the Oklahoma DEQ certified septic installers and licensed septage pumpers/transporters are based in Carter County as of 2026-07-23. Companies based elsewhere in Oklahoma also commonly serve the county.
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