| Company | Location | Certifications | License # |
|---|---|---|---|
| David Lopez | — | Installer (Class I) | OS0039315 |
| Greg A Kitchens | — | Installer (Class II)Inspector (Maintenance Provider) | OS0028311 |
| Gregory D Tatum | — | Designer (Site Evaluator) | OS0021167 |
| Merejildo B Jr Rodriquez | — | Installer (Class II)Designer (Site Evaluator) | OS0034433 |
| Nathan B Johansen | — | Installer (Class II) | OS0028310 |
| Nathaniel Jay Letz | — | Installer (Class I) | OS0040519 |
| Tina D Tatum | — | Installer (Class II)Designer (Site Evaluator) | OS0008037 |
| Wesley Ulmer | — | Installer (Class II)Designer (Site Evaluator) | OS0040219 |
8 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Howard County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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