| Company | Location | Certifications | License # |
|---|---|---|---|
| Ackerman Septic | Juniata, NE | Pumper | 401573 |
| CU Plumbing & Digging LLC | Prosser, NE | Installer | 410952 |
| Furrow Plumbing LLC | Hastings, NE | Installer | 411039 |
| Hersh Digging | Kenesaw, NE | Installer | 410388 |
| K & G Plumbing & Heating Inc | Hastings, NE | Installer | 401608 |
| S & S Septic Pumping LLC | Hastings, NE | Pumper | 403131 |
| Uden Plumbing and Heating Inc | Hastings, NE | Installer | 403216 |
7 companies in the Nebraska DEE onsite wastewater (OWT) certified business registry are based in Adams County as of 2026-07-23. Companies based elsewhere in Nebraska also commonly serve the county.
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