| Company | Location | Certifications | License # |
|---|---|---|---|
| A-One Septic Service, Inc. | Keno, OR | InstallerPumper | 38344 |
| Alpine Septic & Excavation Llc | Gilchrist, OR | Installer | 39498 |
| American Sanitation, Inc. | Klamath Falls, OR | InstallerPumper | 37011 |
| Andrews Building Llc | Klamath Falls, NJ | Installer | 39798 |
| B & D Mobile Support, Inc | Klamath Falls, OR | Pumper | 38996 |
| Bear Valley Construction, Llc | Klamath Falls, OR | Installer | 39330 |
| Big Time Excavation Limited Liability Company | Sprague River, OR | Installer | 39933 |
| Charles C. Brown, Dba High Desert Company | Klamath Falls, OR | Installer | 38119 |
| Elite Excavation Llc | Klamath Falls, OR | Installer | 39392 |
| Faron Bailey, Dba Faron Bailey Excavating | Klamath Falls, OR | Installer | 38557 |
| Hammerich Construction Llc | Bonanza, OR | Installer | 39935 |
| J&K Deese Excavation, Llc | Klamath Falls, OR | InstallerPumper | 38677 |
| Jerry Walters | Gilchrist, OR | Installer | 39456 |
| John B. Brown, Dba J.B.'S Backhoe Service | Chiloquin, OR | Installer | 38519 |
| Lt Excavating Inc | Klamath Falls, OR | Installer | 39504 |
| Modoc Services, Inc. | Klamath Falls, OR | InstallerPumper | 36582 |
| Morello Construction Llc, Dba Morello Construction Llc | Klamath Falls, OR | Installer | 39090 |
| Moss Excavation, Inc | Klamath Falls, OR | Installer | 39008 |
| Walter Jones, Dba Thielsen Construction | Klamath Falls, OR | Installer | 39087 |
| Wynne Excavation Llc | Klamath Falls, OR | Installer | 39928 |
20 companies in the Oregon DEQ licensed Sewage Disposal Service (SDS) installer & pumper businesses are based in Klamath County as of 2026-07-23. Companies based elsewhere in Oregon also commonly serve the county.
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