| Company | Location | Certifications | License # |
|---|---|---|---|
| Aaron Parks | — | Installer (Class I) | OS0039026 |
| Dustin N Zirkle | — | Installer (Class II)Designer (Site Evaluator) | OS0035726 |
| James E Crowder | — | Installer (Class I) | OS0024537 |
| Ruben Rosales | — | Installer (Class I) | OS0037717 |
| Tracy Dwayne Brewster | — | Installer (Class I) | OS0040950 |
5 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Coleman County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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