| Company | Location | Certifications | License # |
|---|---|---|---|
| Charles Q. Hall | Webster Springs, WV | Installer (Class I) | 54-22-028 |
| Daniel Wesley Knowles | Hacker Valley, WV | Installer (Class I) | 54-22-004 |
| James Logan Durham | Cowen, WV | Installer (Class I) | 54-23-064 |
| Matthew L. Cutlip | Cleveland, WV | Installer (Class II) | 54-08-A-0027 |
| Ryan Schafer | Cowen, WV | Installer (Class I) | 54-24-0074 |
| Steven Johns | Cowen, WV | Installer (Class I) | 54-26-055 |
6 companies in the West Virginia OEHS certified onsite sewage system installers are based in Webster County as of 2026-07-23. Companies based elsewhere in West Virginia also commonly serve the county.
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