| Company | Location | Certifications | License # |
|---|---|---|---|
| Brent Gillespie | — | Installer | — |
| Cliff Madden | — | Installer | — |
| Cody Hale | — | InstallerPumper | — |
| Danny Strickland | — | InstallerPumper | — |
| Dylan Powell | — | Pumper | — |
| Jerramie Henderson | — | InstallerPumper | — |
| Jimmy Anderton | — | InstallerPumper | — |
| Mark Gillespie | — | Installer | — |
| Michael Berryman | — | Installer | — |
| Michael Cottingham | — | InstallerPumper | — |
| Richard Allen | — | Installer | — |
| Richard Miller | — | InstallerPumper | — |
| Timothy Borden | — | InstallerPumper | — |
| Walter Gamble | — | Installer | — |
14 companies in the Alabama Onsite Wastewater Board licensee roster are based in Lawrence County as of 2026-07-23. Companies based elsewhere in Alabama also commonly serve the county.
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