| Company | Location | Certifications | License # |
|---|---|---|---|
| Energy Wise Mechanical | Grant, NE | Installer | 411519 |
| Hutt Enterprises | Grant, NE | Installer | 411899 |
2 companies in the Nebraska DEE onsite wastewater (OWT) certified business registry are based in Perkins County as of 2026-07-23. Companies based elsewhere in Nebraska also commonly serve the county.
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