| Company | Location | Certifications | License # |
|---|---|---|---|
| Chris D Rs Robinson | — | Designer (Site Evaluator) | OS0028007 |
| Kenneth Isaacks Sessions | — | Installer (Class II)Inspector (Maintenance Provider) | OS0006580 |
| Ryan Keith Coleman | — | Installer (Class I) | OS0039588 |
| Samuel Robert Huston | — | Installer (Class II) | OS0039000 |
| Travis James Fuller | — | Installer (Class I) | OS0041207 |
5 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Freestone County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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