| Company | Location | Certifications | License # |
|---|---|---|---|
| Bradley Henderson | — | Installer | — |
| Duane Manley | — | Installer | — |
| Dwayne Johnson | — | Installer | — |
| Ellis Stewart | — | Installer | — |
| Jake Talmadge | — | Pumper | — |
| Logan Godsey | — | Installer | — |
| Micah Dickerson | — | Installer | — |
| Richard Densmore | — | Installer | — |
| Ronnie Robinson | — | InstallerPumper | — |
| Tony Hunter | — | Installer | — |
| Wade Feezell | — | Installer | — |
11 companies in the Alabama Onsite Wastewater Board licensee roster are based in Winston County as of 2026-07-23. Companies based elsewhere in Alabama also commonly serve the county.
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