| Company | Location | Certifications | License # |
|---|---|---|---|
| Independent Portable Restrooms Llc | Boardman, OR | Pumper | 38999 |
| Miller & Sons Welding, Inc., Dba Miller & Sons Excavating | Heppner, OR | InstallerPumper | 38386 |
| Rock Enterprises, Inc. | Irrigon, OR | Pumper | 39939 |
| Silver Creek Contracting, Llc | Heppner, OR | Pumper | 38920 |
| Wesley V. Wise, Dba Wesley Wise Excavating | Irrigon, OR | InstallerPumper | 36692 |
5 companies in the Oregon DEQ licensed Sewage Disposal Service (SDS) installer & pumper businesses are based in Morrow County as of 2026-07-23. Companies based elsewhere in Oregon also commonly serve the county.
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