| Company | Location | Certifications | License # |
|---|---|---|---|
| 47beef Construction Llc | West Jefferson, NC | Installer (Level II) | 14438 |
| B & C Construction | West Jefferson, NC | Installer (Level II) | 1049 |
| Baker Grading & Exc Inc | West Jefferson, NC | Installer (Level II) | 5303 |
| Blue Ridge Groundworks | Jefferson, NC | Installer (Level II) | 15486 |
| Bower Brothers Grading Llc | West Jefferson, NC | Installer (Level II)Inspector | 8052 |
| C And R Grading And Utilities | Warrensville, NC | Installer (Level II) | 15440 |
| Capital Holdings Llc | West Jefferson, NC | Installer (Level IV) | 13043 |
| Carolina Grading And Utilities Inc | Jefferson, NC | Installer (Level II) | 14335 |
| Chris Stephen Allen | Todd, NC | Installer (Level II) | 5737 |
| Clay Ridge Construction Llc | Lansing, NC | Installer (Level II) | 15098 |
| Cody Simcox | West Jefferson, NC | Installer (Level II) | 9860 |
| Counterweight Land Solutions Llc | Lansing, NC | Installer (Level II) | 9825 |
| Cranberry Septic & Excavation | Fleetwood, NC | Installer (Level II) | 15411 |
| Cravens Grading Llc | Jefferson, NC | Installer (Level II) | 14339 |
| Darrell Severt Const | Jefferson, NC | Installer (Level II) | 1164 |
| David A Miller Construction | Lansing, NC | Installer (Level II) | 5652 |
| David Eller Cont Inc | Warrensville, NC | Installer (Level IV) | 1703 |
| Dillards Masonry | Todd, NC | Installer (Level II) | 2822 |
| Dobys Plumbing Repair | W Jefferson, NC | Installer (Level IV)Inspector | 2963 |
| Doug Cox Backhoe Service Llc | Crumpler, NC | Installer (Level IV)Inspector | 1057 |
| Driven Groundworks And Property Manage | Jefferson, NC | Installer (Level II) | 11282 |
| Earthworks Grading Co Llc | Warrensville, NC | Installer (Level II) | 9720 |
| Eastridge Backhoe & Dozer Service | Jefferson, NC | Installer (Level II) | 5052 |
| Fleetwood Falls Inc | Fleetwood, NC | Installer (Level II) | 5009 |
| Grade Scapes Llc | Jefferson, NC | Installer (Level II) | 11379 |
| Hanging Gardens Farm | Lansing, NC | Installer (Level IV) | 13051 |
| Harold Jones Excavating Llc | Warrensville, NC | Installer (Level II) | 7123 |
| Hicks Septic Installation | West Jefferson, NC | Installer (Level II) | 11645 |
| Howell Grading Llc | Crumpler, NC | Installer (Level II) | 11078 |
| J C Services | Grassy Creek, NC | Installer (Level IV)Inspector | 5495 |
| Jack J Miller Construction Inc | West Jefferson, NC | Installer (Level II) | 5000 |
| Jason Oliver | Fleetwood, NC | Installer (Level II) | 6904 |
| Jc Services | Grassy Creek, NC | Installer (Level II) | 11487 |
| Jeremy Carpenter Trackhoe Service | Lansing, NC | Installer (Level IV) | 15095 |
| John Sturgill | Creston, NC | Installer (Level II) | 7202 |
| Jones Construction | West Jefferson, NC | Installer (Level II) | 11440 |
| K And B Grading & Hauling | Fleetwood, NC | Installer (Level II) | 14392 |
| Land Tech Solutions | West Jefferson, NC | Installer (Level II) | 14334 |
| Lewis Jackson Sturgill | Creston, NC | Installer (Level II) | 3103 |
| Longs Septic Service | Jeffeerson, NC | Installer (Level II) | 7153 |
| M & M Enterprises | West Jefferson, NC | Installer (Level IV)Inspector | 1804 |
| Mabe'S Excavating | Laurel Springs, NC | Installer (Level IV) | 1668 |
| Marvin Taylor | Lansing, NC | Installer (Level II) | 1688 |
| Maurice Jordan Builders Inc | West Jefferson, NC | Installer (Level IV) | 13091 |
| Millers Backhoe & Dozer Service | Creston, NC | Installer (Level II) | 1672 |
| Millers Backhoe & Dozer Service | Creston, NC | Installer (Level II) | 4860 |
| Moretz Building & Woodworks Llc | Deep Gap, NC | Installer (Level II) | 5687 |
| Mountain Field Excavating & Hauling Llc | Creston, NC | Installer (Level II) | 3342 |
| Mtc | Fleetwood, NC | Installer (Level II) | 6138 |
| Padco Excavating | West Jefferson, NC | Installer (Level II) | 6335 |
| Phipps Construction Llc | Crumpler, NC | Installer (Level II) | 2997 |
| Potter Construction | Jefferson, NC | Installer (Level II) | 5731 |
| Ricardo Castillo | Crumpler, NC | Installer (Level II) | 14016 |
| Riverfront Group Llc | Jefferson, NC | Installer (Level II) | 11181 |
| Riverside Excavation And Grading Llc | Fleetwood, NC | Installer (Level II) | 15050 |
| Rnb Construction / Excavating | Jefferson, NC | Installer (Level II) | 14769 |
| Ronney Dewane Bare Jr | Jefferson, NC | Installer (Level II) | 7096 |
| Ronnie Brooks Const | Lansing, NC | Installer (Level II) | 1622 |
| Ronnie Trivette | Fleetwood, NC | Installer (Level II) | 14726 |
| Russell K Hart Construction | Crumpler, NC | Installer (Level IV)Inspector | 1708 |
| Shaun Campbell | Crumpler, NC | Installer (Level II) | 11669 |
| Sloan Site Services | Fleetwood, NC | Installer (Level II) | 15410 |
| Sro Construction Inc | Todd, NC | Installer (Level IV)Inspector | 1142 |
| T M Butler Corp | West Jefferson, NC | Installer (Level II) | 14173 |
| T R Const | Warrensville, NC | Installer (Level II) | 1678 |
| Tommy Harmon Inc | Sugar Grove, NC | Installer (Level IV) | 1638 |
| Walters Septic Systems Llc | West Jefferson, NC | Installer (Level II) | 14244 |
| Wolverine Excavation Llc | West Jefferson, NC | Installer (Level II) | 11568 |
| Young Landworks Llc | Grassy Creek, NC | Installer (Level II) | 11249 |
69 companies in the NCOWCICB certified onsite wastewater contractor & inspector lists are based in Ashe County as of 2026-07-23. Companies based elsewhere in North Carolina also commonly serve the county.
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