| Company | Location | Certifications | License # |
|---|---|---|---|
| A&J Excavation Llc | Culver, OR | Installer | 39674 |
| Baggett Inc., Dba Rocky Ridge Excavation And Hauling | Madras, OR | Installer | 39927 |
| Big Jake'S Excavating Llc | Terrebonne, OR | Installer | 39626 |
| Bulldog Septic Llc | Terrebonne, OR | InstallerPumper | 39071 |
| C Bar L Development Llc | Terrebonne, OR | Installer | 39538 |
| Cascade Pine Design Build Llc | Culver, OR | Installer | 39839 |
| Central Builders Llc | Madras, OR | Installer | 39911 |
| Dry Canyon Construction And Excavation, Llc | Madras, OR | Installer | 38308 |
| Hamilton Excavating, Llc | Terrebonne, OR | Installer | 39426 |
| Henderson Excavation Llc | Culver, OR | Installer | 39874 |
| Jc Dirtworks, Llc, Dba J.C. Dirt Works | Terrebonne, OR | Installer | 39337 |
| Mark Richard Barkley, Dba Cr Excavation | Terrebonne, OR | Installer | 39411 |
| Robert T. Fender, Dba Bob'S Septic Installation & Repair | Madras, OR | Installer | 38616 |
| Silver Creek Excavating, Llc | Terrebonne, OR | Installer | 39383 |
14 companies in the Oregon DEQ licensed Sewage Disposal Service (SDS) installer & pumper businesses are based in Jefferson County as of 2026-07-23. Companies based elsewhere in Oregon also commonly serve the county.
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