| Company | Location | Certifications | License # |
|---|---|---|---|
| Alonso Ruben Ramirez | — | Installer (Class I) | OS0029076 |
| Bryant Kegan Culp | — | Installer (Class I) | OS0040499 |
| David Gonzales | — | Installer (Class I) | OS0002816 |
| Roger L Sr Hamilton | — | Installer (Class II)Designer (Site Evaluator) | OS0025931 |
4 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Deaf Smith County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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