| Company | Location | Certifications | License # |
|---|---|---|---|
| A-1 Little John, Inc | Denison, OK | Septage Hauler | 773 |
| Advantage Septic Repair | Colbert, OK | Septage Hauler | 543 |
| Advantage Septic Repair | Colbert, OK | Installer (Aerobic Spray) | 976 |
| Blackburn Plumbing LLC | Durant, OK | Installer (Aerobic Spray) | 1258 |
| Brayden H Boyd DBA Turn Two Portables | Tishomingo, OK | Septage Hauler | 840 |
| Burden's Pumping Service | Bells, OK | Septage Hauler | 617 |
| D and D Septic Tank Services | Colbert, OK | Installer (Subsurface, Aerobic Spray) | 1093 |
| Double R Services | Bennington, OK | Installer (Aerobic Spray) | 1287 |
| Dusty Underwood Plumbing & Septic Inc | Bonham, OK | Septage Hauler | 659 |
| KD Plumbing LLC | Bokchito, OK | Installer (Subsurface, Aerobic Spray) | 777 |
| Lion Logistics, LLC dba Hoffman Sanitation Service | Durant, OK | Septage Hauler | 434 |
| Nazworth Backhoe & Dozer | Mead, OK | Installer (Subsurface, Lagoon, Aerobic Spray) | 690 |
| Pat's Pump Service | Bonham, OK | Septage Hauler | 859 |
| Salt Rim, LLC | Bennington, OK | Septage Hauler | 410 |
| Travis Graham Contracting | Cartwright, OK | Installer (Subsurface, Aerobic Spray, Aerobic Drip) | 614 |
| Wilkey Plumbing LLC | Durant, OK | Installer (Aerobic Spray) | 1090 |
16 companies in the Oklahoma DEQ certified septic installers and licensed septage pumpers/transporters are based in Bryan County as of 2026-07-23. Companies based elsewhere in Oklahoma also commonly serve the county.
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