| Company | Location | Certifications | License # |
|---|---|---|---|
| Always Done Right Sewer & Plumbing | Anderson, MO | Installer (Level Advanced) | 39559 |
| C&L Grease And Wastewater Services, Llc | Carterville, MO | Installer (Level Advanced) | 34264 |
| Conner Excavating & Septic Inc. | Neosho, MO | Installer (Level Advanced) | 33245 |
| Hillybilly Pumping And Hauling | Joplin, MO | Installer (Level Advanced) | 39524 |
| King Backhoe & Dozer, Llc | Seneca, MO | Installer (Level Basic) | 38387 |
| Lee Sandtorf Excavating & Trucking, Llc. | Carl Junction, MO | Installer (Level Basic) | 34384 |
| Letts & Demery Pump Inc | Neosho, MO | Installer (Level Basic) | 37103 |
| Michael Hightower | Neosho, MO | Installer (Level Basic) | 38383 |
| Morgan'S Backhoe & Excavation Inc | Goodman, MO | Installer (Level Basic) | 33272 |
| Morgan*S Welding | Stark City, MO | Installer (Level Advanced) | 33249 |
| Patrick Duncan | Goodman, MO | Installer (Level Basic) | 38832 |
| Phillips Backhoe Service | Joplin, MO | Installer (Level Advanced) | 33216 |
| Spring River Drain & Sewer | Carthage, MO | Installer (Level Basic) | 39295 |
13 companies in the Missouri DHSS registered OWTS installer list are based in Jasper County as of 2026-07-23. Companies based elsewhere in Missouri also commonly serve the county.
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