| Company | Location | Certifications | License # |
|---|---|---|---|
| 1St Property Services LLC | — | Installer | — |
| A. Wagner Plumbing | — | Installer | — |
| Ennis Grading & Under Ground Utilites LLC | — | Installer | — |
| Independent Septic and Sewer LLC | — | InstallerPumper | — |
| Innovative Plumbing, Inc. | — | Installer | — |
| Integrated Plumbing Solutions, LLC | — | InstallerPumper | — |
| JRL Excavations | — | Installer | — |
| Papa's Septic Service | — | InstallerPumper | — |
| Ricky E.Grizzle Septic Tank Service | — | Installer | — |
| Rooter Pro Plumbing GA | — | InstallerPumper | — |
| Seagraves Plumbing | — | InstallerPumper | — |
| Silverline Plumbing Inc | — | Installer | — |
| Sludgebusters Septic LLC | — | InstallerPumper | — |
| TOI TOI USA-Marietta | — | Pumper | — |
| Ward Companies, LLC | — | Pumper | — |
| Warren's Construction, LLC | — | Installer | — |
| Water Tech Plumbing, Inc. | — | Installer | — |
| Willman Contracting Co., Inc. | — | Installer | — |
18 companies in the Georgia DPH certified septic installer & approved pumper lists are based in Cobb County as of 2026-07-23. Companies based elsewhere in Georgia also commonly serve the county.
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