| Company | Location | Certifications | License # |
|---|---|---|---|
| Champion Septic Incorporated | Middleburg, FL | Installer (Business Authorization) | SA0121814 |
| Clay Septic & Land Development Inc. | Keystone Heights, FL | Installer (Business Authorization) | SA0041172 |
| Florida Pump Service Inc. | Orange Park, FL | Installer (Business Authorization) | SA0161928 |
| J&J Septic Llc | Green Cove Springs, FL | Installer (Business Authorization) | SA0252293 |
| Michael D. Mosley Septic Service | Middleburg, FL | Installer (Exempt Business) | SE0151897 |
| Sunshine State Septic Llc | Keystone Heights, FL | Installer (Business Authorization) | SA0991009 |
6 companies in the Florida DEP septic tank contractor registrations & business authorizations are based in Clay County as of 2026-07-23. Companies based elsewhere in Florida also commonly serve the county.
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