| Company | Location | Certifications | License # |
|---|---|---|---|
| Earthwork Excavation | Higginsville, MO | Installer (Level Basic) | 39301 |
| Kb Excavation | Odessa, MO | Installer (Level advanced) | 38218 |
2 companies in the Missouri DHSS registered OWTS installer list are based in Lafayette County as of 2026-07-23. Companies based elsewhere in Missouri also commonly serve the county.
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