| Company | Location | Certifications | License # |
|---|---|---|---|
| Alexander Plumbing | Cambridge, NE | Installer | 436279 |
| D & N Lammels | Arapahoe, NE | Installer | 410872 |
| River Valley Services | Cambridge, NE | Installer | 401648 |
| Straight Flush Septic Pumping | Oxford, NE | InstallerPumper | 432645 |
4 companies in the Nebraska DEE onsite wastewater (OWT) certified business registry are based in Furnas County as of 2026-07-23. Companies based elsewhere in Nebraska also commonly serve the county.
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