| Company | Location | Certifications | License # |
|---|---|---|---|
| Andrew Wallace | Florence, SC | Installer (Tier 2) | OSWWI0399 |
| Bon Construction | Scranton, SC | Installer (Tier 2) | 21-367-21098 |
| C & M Services | Florence, SC | Installer (Tier 2) | 21-367-21097 |
| Corner Dirt Llc | Johnsonville, SC | Installer (Tier 2) | OSWWI0758 |
| Cory Duke | Lake City, SC | Installer (Tier 2) | OSWWI0466 |
| Elite Event Rental | Pamplico, SC | Pumper | OSWWP0104 |
| Florence Septic Systems | Florence, SC | Installer (Tier 2) | OSWWI0018 |
| Florence Septic Tank Systems | Florence, SC | Installer (Tier 2) | 21-367-21047 |
| Florence Septic Tank Systems | Florence, SC | Pumper | 21-368-21019 |
| Hendrick Septic | Florence, SC | Pumper | OSWWP0136 |
| Jason'S Concrete Finishing S/T | Coward, SC | Installer (Tier 2) | 21-367-21087 |
| Laverne Bazen | Pamplico, SC | Installer (Tier 2) | 21-367-21066 |
| N/A | Lake City, SC | Installer (Tier 2) | OSWWI0473 |
| Pdf Of Johnsonville, Llc | Johnsonville, SC | Pumper | 21-368-21059 |
| Pee Dee Septic Systems | Florence, SC | Installer (Tier 2) | OSWWI0682 |
| Powells Septic System | Johnsonville, SC | Installer (Tier 2) | 21-367-21082 |
| Rick'S Excavating Services Llc | Pamplico, SC | Installer (Tier 2) | 21-367-21084 |
| Southeast Septic Systems | Pamplico, SC | Pumper | 21-368-21057 |
| Southern Land And Aerial Services, Llc | Timmonsville, SC | Installer (Tier 1) | OSWWI0697 |
| Sss Septic Services | Florence, SC | Installer (Tier 2) | OSWWI0771 |
| Tanks 4 Less | Florence, SC | Installer (Tier 2) | 21-367-21092 |
| W.W. Contruction Inc | Coward, SC | Installer (Tier 2) | OSWWI0709 |
22 companies in the SCDES on-site wastewater (OSWW) contractor registry are based in Florence County as of 2026-07-23. Companies based elsewhere in South Carolina also commonly serve the county.
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