| Company | Location | Certifications | License # |
|---|---|---|---|
| Bert Dain | — | InstallerPumper | — |
| Billy Smith | — | Installer | — |
| Bryan Abernathy | — | Installer | — |
| Christian Mcgowan | — | InstallerPumper | — |
| Darrell Colvett | — | Installer | — |
| Donald Thomas | — | InstallerPumper | — |
| Donny Adams | — | Installer | — |
| Gonzalo Rubio | — | Installer | — |
| Gregory Rolin | — | Installer | — |
| Hunter Terry | — | Installer | — |
| Jay Spencer | — | Installer | — |
| Jeremy Williams | — | Installer | — |
| John Bailey | — | InstallerPumper | — |
| Joseph Mitchell | — | Installer | — |
| Mark Kulpinski | — | Pumper | — |
| Matthew Hammond | — | Installer | — |
| Ricardo Gomez | — | InstallerPumper | — |
| Robert Teaven | — | InstallerPumper | — |
| Ronald Bates | — | Pumper | — |
| Russell George | — | Installer | — |
| Scott Roberson | — | Installer | — |
| Shawn Wray | — | Installer | — |
| Stanley Williams | — | Installer | — |
| Steven Stanfill | — | InstallerPumper | — |
| W Mcguire | — | InstallerPumper | — |
| Zachary Teaven | — | Installer | — |
26 companies in the Alabama Onsite Wastewater Board licensee roster are based in Limestone County as of 2026-07-23. Companies based elsewhere in Alabama also commonly serve the county.
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