| Company | Location | Certifications | License # |
|---|---|---|---|
| Bill W Pair | — | Installer (Class II)Designer (Site Evaluator) | OS0007192 |
| Bobby Gene Anderson | — | Installer (Class II) | OS0001189 |
| Brian K Rs Wendland | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0028150 |
| Clayton Ray Garrison | — | Installer (Class II)Designer (Site Evaluator) | OS0003844 |
| Curtis B Farrar | — | Installer (Class II)Inspector (Maintenance Provider) | OS0034706 |
| Danielle A Donnelly-Kerlin | — | Designer (Site Evaluator) | OS0029947 |
| Diane L Pair | — | Installer (Class I) | OS0038635 |
| Jeffrey Springer | — | Installer (Class II) | OS0034833 |
| Joshua Lance Davenport | — | Installer (Class II) | OS0040062 |
| Juan Bernardo Escalante Castillo | — | Installer (Class I)Designer (Site Evaluator) | OS0038159 |
| Juan Jose Alcala | — | Installer (Class I) | OS0038047 |
| Kevin Ray Payne | — | Installer (Class I) | OS0039900 |
| Martin G Gutierrez | — | Installer (Class II) | OS0028617 |
| Renee Lynn Mender | — | Installer (Class II)Inspector (Maintenance Provider) | OS0038962 |
| Roger A Huber | — | Installer (Class II)Inspector (Maintenance Provider) | OS0001662 |
| Stephen Frank Lehnert | — | Installer (Class II)Designer (Site Evaluator) | OS0008437 |
| William C Fowler | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0005606 |
17 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Milam County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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