| Company | Location | Certifications | License # |
|---|---|---|---|
| Chase Duwayne Fenoglio | — | Installer (Class II)Designer (Site Evaluator) | OS0038457 |
| Donald Cheshier | — | Installer (Class I) | OS0003353 |
| Jack P Miller | — | Installer (Class II) | OS0021346 |
| Kasey L Denson | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0032915 |
| Micheal Kent Preuninger | — | Installer (Class II)Designer (Site Evaluator) | OS0005920 |
| Thomas W Hopson | — | Installer (Class I) | OS0026611 |
| Trevor Mccord Fenoglio | — | Installer (Class II) | OS0040848 |
7 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Montague County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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