| Company | Location | Certifications | License # |
|---|---|---|---|
| Bob C Hamman | — | Installer (Class II)Designer (Site Evaluator) | OS0022910 |
| Christopher Mitchell | — | Installer (Class II) | OS0032936 |
| Clint William Watson | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0037669 |
| Justin Dalton | — | Installer (Class I) | OS0038980 |
| Patrick Paul Wilhoit | — | Installer (Class I) | OS0039995 |
| Royce Duane Norvill | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0003326 |
6 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Jack County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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