| Company | Location | Certifications | License # |
|---|---|---|---|
| Adams Land Management Llc | Hayesville, NC | Installer (Level II) | 6988 |
| Alvin D Ledford Grading Corp | Hayesville, NC | Installer (Level IV) | 2729 |
| Anderson And Son Grading & Clearing Inc | Hayesville, NC | Installer (Level IV) | 1428 |
| Craig Sullivan | Hayesville, NC | Installer (Level II) | 14925 |
| David Rogers Construction | Hayesville, NC | Installer (Level II) | 4638 |
| Ed'S Land Clearing | Hayesville, NC | Installer (Level IV)Inspector | 2398 |
| Fresh Air Properties | Hayesville, NC | Installer (Level II) | 1468 |
| Jimmy Nelson Construction | Hayesville, NC | Installer (Level II) | 1398 |
| Kss Kimsey Septic Services Llc | Hayesville, NC | Installer (Level II) | 15127 |
| M G M Utilities Construction Inc | Hayesville, NC | Installer (Level IV) | 1458 |
| Mulls Trucking Llc | Hayesville, NC | Installer (Level II) | 15363 |
| Nichols Construction | Hayesville, NC | Installer (Level II) | 1399 |
| Nichols Construction Co | Hayesville, NC | Installer (Level II) | 1400 |
| Sodbuster | Hayesville, NC | Installer (Level IV)Inspector | 5478 |
| Sweetwater Land Home Services | Hayesville, NC | Installer (Level II) | 9004 |
| T & A Construction Llc | Brasstown, NC | Installer (Level IV) | 1608 |
| Waldroup Trucking & Grading | Hayesville, NC | Installer (Level II) | 1422 |
17 companies in the NCOWCICB certified onsite wastewater contractor & inspector lists are based in Clay County as of 2026-07-23. Companies based elsewhere in North Carolina also commonly serve the county.
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