| Company | Location | Certifications | License # |
|---|---|---|---|
| Daniel Floyd Thomas | — | Installer (Class I) | OS0040521 |
| Jake Wilcher Jr Landess | — | Installer (Class II)Inspector (Maintenance Provider) | OS0029459 |
| James Carlyle Iii Hester | — | Designer (Site Evaluator) | OS0012222 |
| James L Allen | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0007176 |
| Levi L Pilkington | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0037916 |
| Michael J Brown | — | Inspector (Maintenance Provider) | MP0002568 |
| Mollie L Futrell | — | Installer (Class II)Inspector (Maintenance Provider) | OS0002559 |
| Nathan Allen Adams | — | Designer (Site Evaluator) | OS0036228 |
| Randall L Pilkington | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0028815 |
| Robert Andrew Nel | — | Designer (Site Evaluator) | OS0037223 |
| Stephen Reese Mathews | — | Installer (Class II) | OS0038925 |
| Stephen W Rs Mathews | — | Installer (Class II)Designer (Site Evaluator)Inspector (Maintenance Provider) | OS0017966 |
| Timothy James Stanley | — | Designer (Site Evaluator) | OS0037245 |
| Tracy Andrus | — | Installer (Class I) | OS0041457 |
| Wesley Neal Lacy | — | Installer (Class II)Inspector (Maintenance Provider) | OS0030177 |
15 companies in the TCEQ OSSF (On-Site Sewage Facility) occupational licenses are based in Harrison County as of 2026-07-23. Companies based elsewhere in Texas also commonly serve the county.
Tell us what you need — we'll connect you with state-certified companies serving your area. No obligation.