| Company | Location | Certifications | License # |
|---|---|---|---|
| Johnny Harris Jr | — | Pumper | — |
| Johnny Harris Sr | — | Installer | — |
| Kenneth Moore | — | Pumper | — |
| Preston Phillips | — | Installer | — |
4 companies in the Alabama Onsite Wastewater Board licensee roster are based in Dallas County as of 2026-07-23. Companies based elsewhere in Alabama also commonly serve the county.
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