| Company | Location | Certifications | License # |
|---|---|---|---|
| Blue Ridge Pumping & Trackhoe Services | Glade Valley, NC | Installer (Level IV)Inspector | 1193 |
| Bottomley Masonry | Sparta, NC | Installer (Level II) | 6795 |
| Brantley Teague Grading & Seeding | Piney Creek, NC | Installer (Level II) | 5824 |
| Browns Trackhoe & Dozer Service | Glade Valley, NC | Installer (Level IV)Inspector | 6561 |
| Daniel Teague Grading | Piney Creek, NC | Installer (Level IV) | 7204 |
| Dirty Roten'S Dozing Excavating | Piney Creek, NC | Installer (Level IV) | 7188 |
| Ethan Tucker | Laurel Springs, NC | Installer (Level II) | 9858 |
| Graylen Blevins Ehp Llc | Sparta, NC | Installer (Level II) | 6660 |
| Greenes Excavating | Laurel Springs, NC | Installer (Level IV)Inspector | 1707 |
| Hassan Mitchell Kiser | Sparta, NC | Installer (Level II) | 5089 |
| High Country Grading | Sparta, NC | Installer (Level II) | 4118 |
| Hill'S | Piney Creek, NC | Installer (Level IV) | 9783 |
| J C Earthworks Llc | Sparta, NC | Installer (Level II) | 11004 |
| Jacks Landscaping | Sparta, NC | Installer (Level II) | 1667 |
| Jeremy Bare | Sparta, NC | Installer (Level II) | 14163 |
| Kevin'S Excavating | Sparta, NC | Installer (Level II) | 11293 |
| Lemasters Construction Llc | Sparta, NC | Installer (Level IV)Inspector | 3544 |
| Matthews Trackhoe Service | Sparta, NC | Installer (Level II) | 9526 |
| Quality Services Llc | Laurel Springs, NC | Installer (Level II) | 11695 |
| Randy Tucker Const | Laurel Springs, NC | Installer (Level IV) | 1725 |
| River Brooks Llc | Sparta, NC | Installer (Level II) | 14011 |
| Roger Lee Halsey | Glade Valley, NC | Installer (Level II) | 7100 |
| Roupe Brothers Electric Company | Sparta, NC | Installer (Level II) | 9520 |
| Scott'S Landscaping Nursery And Farms | Sparta, NC | Installer (Level IV) | 11232 |
| Smith Grading | Ennice, NC | Installer (Level II) | 5551 |
| Tnt Logging | Piney Creek, NC | Installer (Level II) | 15424 |
| Townsend'S Excavating | Piney Creek, NC | Installer (Level IV) | 1689 |
| Woodruff Grading | Glade Valley, NC | Installer (Level IV)Inspector | 6244 |
28 companies in the NCOWCICB certified onsite wastewater contractor & inspector lists are based in Alleghany County as of 2026-07-23. Companies based elsewhere in North Carolina also commonly serve the county.
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