| Company | Location | Certifications | License # |
|---|---|---|---|
| Charles R Rose | — | Installer (Class II)Designer (Site Evaluator) | OS0000427 |
| Jimmy Wayne Sr Trantham | — | Installer (Class II)Inspector (Maintenance Provider) | OS0008168 |
| Rodney C Ricks | — | Installer (Class II)Inspector (Maintenance Provider) | OS0004919 |
| Ronnie R Smelley | — | Installer (Class II)Designer (Site Evaluator) | OS0003788 |
4 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Franklin County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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