| Company | Location | Certifications | License # |
|---|---|---|---|
| A-1 Sewer And Septic Service | Lathrop, MO | Installer (Level Advanced) | 36969 |
| B&M Septic And Construction | Kidder, MO | Installer (Level Basic) | 39075 |
| Baker Rentals | Iatan, MO | Installer (Level Advanced) | 32885 |
| Bob'S Septic And Dirt Work | Camden Point, MO | Installer (Level Advanced) | 32917 |
| Dennis Hannah | Holt, MO | Installer (Level Advanced) | 37589 |
| Digger Dave Llc | Lawson, MO | Installer (Level Advanced) | 38173 |
| Diversified And Innovative Builders Llc | Kearney, MO | Installer (Level Advanced) | 39187 |
| Eales Excavating & Septic Llc | Excelsior Springs, MO | Installer (Level Advanced) | 37812 |
| H & H Septic Service Inc | Parkville, MO | Installer (Level Advanced) | 31880 |
| H&H Septic Service | Platte City, MO | Installer (Level Advanced) | 39095 |
| Harris Excavating And Construction | Lathrop, MO | Installer (Level Basic) | 37191 |
| Hensley Nance Excavating | Edgerton, MO | Installer (Level Basic) | 38844 |
| Home Performance Group | Kearney, MO | Installer (Level Advanced) | 37706 |
| Mckee Construction Services | Kansas City, MO | Installer (Level Advanced) | 34186 |
| Mike Garton | Liberty, MO | Installer (Level Advanced) | 39529 |
| Myers Plumbing Heating And Cooling | Trimble, MO | Installer (Level Advanced) | 39430 |
| Myers Plumbing Heating Cooling | Trimble, MO | Installer (Level Advanced) | 39414 |
| Quality Plumbing | North Kansas City, MO | Installer (Level Advanced) | 38888 |
| Tunks Construction, Llc | Cameron, MO | Installer (Level Advanced) | 38015 |
| Weszak Construction | Gower, MO | Installer (Level Advanced) | 39126 |
| Zoom Drain | North Kansas City, MO | Installer (Level Advanced) | 39525 |
21 companies in the Missouri DHSS registered OWTS installer list are based in Buchanan County as of 2026-07-23. Companies based elsewhere in Missouri also commonly serve the county.
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