| Company | Location | Certifications | License # |
|---|---|---|---|
| Austin Jay Davidson | Branchland, WV | Installer (Class II) | 54-76-A-1310 |
| Christopher Jordan Davis | Branchland, WV | Installer (Class II) | 54-24-A-002 |
| Edward Garfield Adkins Ii | Hamlin, WV | Installer (Class II) | 54-15-A-022 |
| Gary McCallister | Alum Creek, WV | Installer (Class II) | 54-26-A-064 |
| James Samuel Chaffins | Branchland, WV | Installer (Class II) | 54-23-A-008 |
| Jason Evans | Harts, WV | Installer (Class I) | 54-26-044 |
| Jonathan Dale Tackett | Hamlin, WV | Installer (Class II) | 54-26-A-069 |
| Robert C. Spence | Hamlin, WV | Installer (Class II) | 54-07-A-0027 |
| Robert Lee Adkins | West Hamlin, WV | Installer (Class II) | 54-21-A-037 |
| Terry R. Brumfield | Harts, WV | Installer (Class II) | 54-13-A-021 |
| Wylie Aaron Stowers | Hamlin, WV | Installer (Class I) | 54-22-051 |
11 companies in the West Virginia OEHS certified onsite sewage system installers are based in Lincoln County as of 2026-07-23. Companies based elsewhere in West Virginia also commonly serve the county.
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