| Company | Location | Certifications | License # |
|---|---|---|---|
| Bertray M Kirk | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0003566 |
| Bobby L Brasuell | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0038280 |
| Carl B Dauterive | — | Installer (Class II)Inspector (Maintenance Provider) | OS0028446 |
| Jackie S Hanna | — | Installer (Class II)Inspector (Maintenance Provider) | OS0005567 |
| Jeremy Scott Leger | — | Installer (Class II)Inspector (Maintenance Provider) | OS0025362 |
| Madden Lee Swint | — | Installer (Class II)Inspector (Maintenance Provider) | OS0039969 |
| Melvin E Jr Adams | — | Installer (Class II)Inspector (Maintenance Provider) | OS0002109 |
| Michael B Lange | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0030935 |
| Roy Antell Leger | — | Installer (Class II)Inspector (Maintenance Provider) | OS0000222 |
9 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Jefferson County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
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