| Company | Location | Certifications | License # |
|---|---|---|---|
| Argil D. Jones | Brohard, WV | Installer (Class I) | 54-24-0059 |
| Jacob Bruce Jett | Orma, WV | Installer (Class II) | 54-26-A-014 |
| Shaun M Laughlin | Arnoldsburg, WV | Installer (Class II) | 54-26-A-068 |
| Thomas W. Shock | Millstone, WV | Installer (Class II) | 54-93-A-0601 |
4 companies in the West Virginia OEHS certified onsite sewage system installers are based in Calhoun County as of 2026-07-23. Companies based elsewhere in West Virginia also commonly serve the county.
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