| Company | Location | Certifications | License # |
|---|---|---|---|
| BRANDI J. Hartshorn | Elizabeth, WV | Installer (Class II) | 54-21-A-048 |
| Brian Ash | Palestine, WV | Installer (Class I) | 54-24-0047 |
| Gary Carter | Palestine, WV | Installer (Class I) | 54-25-023 |
| Jonathan Larrison | Elizabeth, WV | Installer (Class II) | 54-25-A-028 |
| Kenneth L. Hennen | Elizabeth, WV | Installer (Class II) | 54-95-A-0602 |
| Lakin Sims | Palestine, WV | Installer (Class II) | 54-23-A-055 |
| Scott Murphy | Elizabeth, WV | Installer (Class I) | 54-04-0066 |
| Terry L. Villers | Palestine, WV | Installer (Class I) | 54-94-0602 |
8 companies in the West Virginia OEHS certified onsite sewage system installers are based in Wirt County as of 2026-07-23. Companies based elsewhere in West Virginia also commonly serve the county.
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