| Company | Location | Certifications | License # |
|---|---|---|---|
| Ron Rowe Construction Company | Tishomingo, OK | Installer (Subsurface, Lagoon, Aerobic Spray) | 106 |
| Ron Rowe Septic Tank Cleaning | Tishomingo, OK | Septage Hauler | 143 |
2 companies in the Oklahoma DEQ certified septic installers and licensed septage pumpers/transporters are based in Johnston County as of 2026-07-23. Companies based elsewhere in Oklahoma also commonly serve the county.
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