| Company | Location | Certifications | License # |
|---|---|---|---|
| Jons Plumbing Trenching & Bac | St Libory, NE | Installer | 409885 |
| Morris Plumbing | Elba, NE | Installer | 411537 |
| Morse Boring and Excavating | St Libory, NE | Installer | 436212 |
| SK Septic | St Libory, NE | Pumper | 410958 |
| Wells Plumbing Co Inc | St Paul, NE | Installer | 403021 |
5 companies in the Nebraska DEE onsite wastewater (OWT) certified business registry are based in Howard County as of 2026-07-23. Companies based elsewhere in Nebraska also commonly serve the county.
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