| Company | Location | Certifications | License # |
|---|---|---|---|
| Blue Mills Plumbing | Independence, MO | Installer (Level Basic) | 38378 |
| Brett Clemens Excavating | Odessa, MO | Installer (Level Basic) | 34866 |
| Garner Landscapes Llc | Lexington, MO | Installer (Level Basic) | 39106 |
| Jeffery Septic Systems Llc | Odessa, MO | Installer (Level Basic) | 32364 |
| Johnson'S Construction | Odessa, MO | Installer (Level Advanced) | 38114 |
| Tom Dent Construction | Oak Grove, MO | Installer (Level Basic) | 33407 |
6 companies in the Missouri DHSS registered OWTS installer list are based in Jackson County as of 2026-07-23. Companies based elsewhere in Missouri also commonly serve the county.
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