| Company | Location | Certifications | License # |
|---|---|---|---|
| AAA Sewer & Drain | Plattsmouth, NE | InstallerPumper | 410468 |
| City of Plattsmouth | Plattsmouth, NE | Inspector | 402792 |
| Fuxa Enterprises | Cedar Creek, NE | Installer | 402071 |
| Grinder Pump Man, LLC | Plattsmouth, NE | Pumper | 431609 |
| Kerns Excavating | Plattsmouth, NE | InstallerPumper | 402000 |
| MI Diggers | Eagle, NE | Installer | 411224 |
| Nebraska Digging Services LLC | Elmwood, NE | Installer | 411314 |
| Noerrlinger Construction | Union, NE | Installer | 410493 |
| Premier Plumbing | Louisville, NE | Installer | 410891 |
| RH Construction Corp | Murdock, NE | Installer | 401918 |
| Savage Plumbing Inc | Plattsmouth, NE | Installer | 408295 |
| Tri State Pumping LLC | Nehawka, NE | Pumper | 411067 |
12 companies in the Nebraska DEE onsite wastewater (OWT) certified business registry are based in Cass County as of 2026-07-23. Companies based elsewhere in Nebraska also commonly serve the county.
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