| Company | Location | Certifications | License # |
|---|---|---|---|
| A Touch From Above | St Helena Island, SC | Installer (Tier 2) | 07-367-07128 |
| Aue Land | Bluffton, SC | Installer (Tier 2) | OSWWI0566 |
| Bill Moody & Son Inc | Beaufort, SC | Installer (Tier 2) | 07-367-07025 |
| Burton Contractors & Equipment Rentals, Inc. | Beaufort, SC | Pumper | OSWWP0124 |
| C & D Builders | Beaufort, SC | Installer (Tier 1) | OSWWI0626 |
| Carribean Landscaping & Tree Service | Beaufort, SC | Installer (Tier 2) | OSWWI0210 |
| Christopher Brant Irvin | Okatie, SC | Installer (Tier 2) | OSWWI0236 |
| Collins Septic Tank Service | Bluffton, SC | Installer (Tier 2) | 07-367-07023 |
| Collins Septic Tank Service | Bluffton, SC | Pumper | 07-368-07003 |
| Collins Septic Tank Service | Bluffton, SC | Pumper | 07-368-07045 |
| Collins Septic Tank Service | Bluffton, SC | Pumper | 07-368-07046 |
| Collins Septic Tank Service Inc | Bluffton, SC | Installer (Tier 2) | OSWWI0246 |
| Collins Septic Tank Service, Inc | Bluffton, SC | Installer (Tier 2) | OSWWI0689 |
| Dan Mccorkle | Seabrook, SC | Pumper | 07-368-07039 |
| Dh Abney Company, Inc. | Bluffton, SC | Installer (Tier 2) | 07-367-07126 |
| Dobbs Mechanical & Utility Llc | Beaufort, SC | Installer (Tier 2) | OSWWI0105 |
| Evans Construction Llc | Beaufort, SC | Installer (Tier 2) | OSWWI0094 |
| Gantt Real Property Llc | Port Royal, SC | Installer (Tier 2) | 07-367-07122 |
| James Washington | Beaufort, SC | Pumper | 07-368-07026 |
| Johnny Jackson Builders | St Helena, SC | Installer (Tier 2) | 02-367-02159 |
| Landon'S Llc | Beaufort, SC | Pumper | 07-368-07032 |
| Lowcountry Outdoor Solutions Llc | Beaufort, SC | Installer (Tier 1) | OSWWI0768 |
| Lwb Enterprises Llc | Bluffton, SC | Installer (Tier 2) | 07-367-07133 |
| Omni Waste & Recycling | Beaufort, SC | Pumper | OSWWP0088 |
| Onsite Company Llc | Beaufort, SC | Pumper | OSWWP0034 |
| Riverside Land Group | Beaufort, SC | Installer (Tier 2) | OSWWI0513 |
| Septic Experts | Hilton Head, SC | Installer (Tier 2) | OSWWI0457 |
| Septic Experts, Llc. | Hilton Head, SC | Installer (Tier 2) | OSWWI0456 |
| Septic Works Llc | Seabrook, SC | Installer (Tier 2) | OSWWI0222 |
| Steve Clark | Daufuskie Is, SC | Installer (Tier 2) | OSWWI0586 |
| Swamp Fox Specialised Services | Seabrook, SC | Installer (Tier 1) | OSWWI0738 |
| Washington Septic Tanks | Beaufort, SC | Installer (Tier 2) | 07-367-07033 |
| West Atlantic Services Llc | Beaufort, SC | Installer (Tier 2) | OSWWI0410 |
33 companies in the SCDES on-site wastewater (OSWW) contractor registry are based in Beaufort County as of 2026-07-23. Companies based elsewhere in South Carolina also commonly serve the county.
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