| Company | Location | Certifications | License # |
|---|---|---|---|
| Abee'S Clearing & Grading | Mocksville, NC | Installer (Level IV)Inspector | 1011 |
| B & R Landworks Llc | Mocksville, NC | Installer (Level IV) | 9950 |
| Barnes Grading | Advance, NC | Installer (Level IV)Inspector | 1018 |
| Cornett Solutions | Mocksville, NC | Installer (Level IV) | 11859 |
| Crotts Co Inc | Mocksville, NC | Installer (Level IV) | 1058 |
| D & S Land Management | Mocksville, NC | Installer (Level IV)Inspector | 13007 |
| Dunn Grading | Mocksville, NC | Installer (Level IV) | 2702 |
| Everclear | Clemmons, NC | Installer (Level II) | 14843 |
| Frank Transou Septic Tank Company Inc | Advance, NC | Installer (Level IV)Inspector | 2771 |
| Hicks Land Management | Advance, NC | Installer (Level II) | 6890 |
| Hunter Daywalt | Mocksville, NC | Installer (Level II) | 15106 |
| J D Etchison Plumbing Services Inc | Mocksville, NC | Installer (Level II) | 12068 |
| Lakey'S Backhoe Service | Mocksville, NC | Installer (Level IV)Inspector | 1107 |
| Lakey'S Backhoe Service Inc | Mocksville, NC | Installer (Level II) | 1108 |
| Lakey'S Backhoe Service Inc | Mocksville, NC | Installer (Level II) | 1106 |
| Largent Land Management Llc | Advance, NC | Installer (Level II) | 11537 |
| Lawrence Impellizeri | Mocksville, NC | Installer (Level IV) | 11780 |
| Liningworks Llc | Mocksville, NC | Installer (Level II) | 11228 |
| M Carter Truck And Grade | Mocksville, NC | Installer (Level II) | 11085 |
| Mcdaniel Grading & Hauling | Mocksville, NC | Installer (Level IV)Inspector | 1118 |
| Myers Construction | Advance, NC | Installer (Level II) | 7267 |
| Peace Makers Service Company | Advance, NC | Installer (Level II) | 9606 |
| Prevette And Son Plumbing Llc | Mocksville, NC | Installer (Level II) | 6620 |
| Project X Grading Hauling & Septic | Mocksville, NC | Installer (Level II) | 9912 |
| Randy Miller & Sons | Mocksville, NC | Installer (Level IV)Inspector | 1129 |
| Randy Miller & Sons Sts | Mocksville, NC | Installer (Level IV)Inspector | 1128 |
| Randy Randleman | Advance, NC | Installer (Level IV) | 11432 |
| Shady Knoll Septic Service Llc | Mocksville, NC | Installer (Level IV)Inspector | 5580 |
| Singleton Grading | Advance, NC | Installer (Level II) | 1820 |
| Singleton Grading Inc | Advance, NC | Installer (Level II) | 1819 |
| Spillman Auto Service | Cooleemee, NC | Installer (Level II) | 2661 |
| Tar Heel Landworks Llc | Mocksville, NC | Installer (Level II) | 14951 |
| Wen Contracting Llc | Mocksville, NC | Installer (Level II) | 9641 |
| Willard'S Septic Solutions Llc | Mocksville, NC | Installer (Level IV)Inspector | 11368 |
34 companies in the NCOWCICB certified onsite wastewater contractor & inspector lists are based in Davie County as of 2026-07-23. Companies based elsewhere in North Carolina also commonly serve the county.
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