| Company | Location | Certifications | License # |
|---|---|---|---|
| Carnegie Precast Inc | Carnegie, OK | Installer (Subsurface, Lagoon, Aerobic Spray) | 133 |
| Indian Health Services | Lawton, OK | Installer (Subsurface, Aerobic Spray) | 675 |
| Jake Septic Service | Hinton, OK | Septage Hauler | 359 |
| Rural H Services LLC | Pocasset, OK | Septage Hauler | 929 |
| Septic King LLC | Hinton, OK | Septage Hauler | 891 |
| Snider Construction Service Inc | Cyril, OK | Installer (Subsurface, Lagoon, Aerobic Spray) | 95 |
| Whitehead Plumbing LLC | Apache, OK | Septage Hauler | 747 |
7 companies in the Oklahoma DEQ certified septic installers and licensed septage pumpers/transporters are based in Caddo County as of 2026-07-23. Companies based elsewhere in Oklahoma also commonly serve the county.
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