| Company | Location | Certifications | License # |
|---|---|---|---|
| Alan Jerkins Plumbing Co Inc | Stanley, NC | Installer (Level II) | 7205 |
| Alden & Son Construction | Stanley, NC | Installer (Level IV) | 11417 |
| Alpha Grading And Excavation | Catawba, NC | Installer (Level IV) | 3938 |
| Beard Septic And Grading Llc | Vale, NC | Installer (Level II) | 12035 |
| Bobby Dellinger | Maiden, NC | Installer (Level II) | 9814 |
| Buddy Caldwell Builders Inc | Lincolnton, NC | Installer (Level IV) | 9503 |
| Byrd Hauling & Construction | Lincolnton, NC | Installer (Level II) | 7904 |
| Caldwell Grading | Lincolnton, NC | Installer (Level IV) | 1044 |
| Callaway Grading | Denver, NC | Installer (Level II) | 14780 |
| Chris Scott Hedrick | Lincolnton, NC | Installer (Level IV)Inspector | 4959 |
| Colton Merritt | Stanley, NC | Installer (Level IV) | 11465 |
| Cooks Plumbing | Lincolnton, NC | Installer (Level II) | 11131 |
| Correa Construction Llc | Stanley, NC | Installer (Level II)Inspector | 11350 |
| Dellinger Grading Co | Lincolnton, NC | Installer (Level IV) | 1063 |
| Dellinger Grading Company Inc | Lincolnton, NC | Installer (Level IV) | 14268 |
| Dennis Hoyle Services | Vale, NC | Installer (Level IV)Inspector | 1849 |
| Denver Shores Llc | Denver, NC | Installer (Level II) | 5011 |
| Ech Custom Building Llc | Lincolnton, NC | Installer (Level II) | 11365 |
| Grew Construction | Cherryville, NC | Installer (Level II) | 14359 |
| Hallman Construction Inc | Oak Island, NC | Installer (Level IV) | 2025 |
| Joshua Hedgepeth | Lincolnton, NC | Installer (Level IV) | 11927 |
| Justice Construction Inc | Lincolnton, NC | Installer (Level II) | 14195 |
| Kahlig Construction Llc | Iron Station, NC | Installer (Level II) | 15341 |
| Lake Norman Sewer & Septic | Denver, NC | Installer (Level IV)Inspector | 1840 |
| Macleod Construction | Catawba, NC | Installer (Level II) | 14870 |
| Neon Building | Denver, NC | Installer (Level IV) | 11027 |
| Next Level Pipe Lining Inc | Cherryville, NC | Installer (Level IV)Inspector | 1879 |
| Patrick Earthworks | Denver, NC | Installer (Level II) | 11706 |
| Plumb 4 U More Llc | Lincolnton, NC | Installer (Level II) | 6805 |
| Rock Ridge Construction | Denver, NC | Installer (Level IV) | 7091 |
| Roddi Long Grading Inc | Denver, NC | Installer (Level IV) | 1113 |
| Scott'S Grading | Lincolnton, NC | Installer (Level IV) | 9452 |
| Stella Earthworx Llc | Denver, NC | Installer (Level II) | 15215 |
| Tim Ledford Grading | Lincolnton, NC | Installer (Level II) | 1802 |
| Tt Environmenatal | Denver, NC | Installer (Level IV)Inspector | 5642 |
| Vale Grading | Lincolnton, NC | Installer (Level II) | 12009 |
| Vale Septic Solutions Llc | Vale, NC | Installer (Level II)Inspector | 8049 |
| William Whitley | Iron Station, NC | Installer (Level II) | 14735 |
| Workman Builders & Grading & Septic Tank | Vale, NC | Installer (Level II) | 3120 |
| Workman Builders & Grading & Septic Tank | Vale, NC | Installer (Level II) | 3446 |
40 companies in the NCOWCICB certified onsite wastewater contractor & inspector lists are based in Lincoln County as of 2026-07-23. Companies based elsewhere in North Carolina also commonly serve the county.
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