| Company | Location | Certifications | License # |
|---|---|---|---|
| Cash Cleo Cooper | — | Installer (Class I) | OS0040885 |
| Davitt J Smith | — | Installer (Class II)Inspector (Maintenance Provider) | OS0032419 |
| Dustin E Braden | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0031453 |
| Hudson Hartman Smith | — | Installer (Class I) | OS0040344 |
| Joe Jr Ortiz | — | Installer (Class I) | OS0003569 |
| Justin Scott Cooper | — | Installer (Class II)Inspector (Maintenance Provider) | OS0029673 |
| Leland Krauser | — | Installer (Class I) | OS0041569 |
| Trenton R Watson | — | Installer (Class I) | OS0040973 |
8 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Dewitt County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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