| Company | Location | Certifications | License # |
|---|---|---|---|
| Ai Septic And Excavation Llc | Gresham, OR | Installer | 39820 |
| Bdl Plumbing , Llc | Corbett, OR | Installer | 39271 |
| Dirt & Aggregate Interchange, Inc. | Fairview, OR | Installer | 38980 |
| Environmental Works Llc | Fairview, OR | InstallerPumper | 39832 |
| Goodman Sanitation, Inc. | Troutdale, OR | InstallerPumper | 34611 |
| Gray Water Disposal Service | Gresham, OR | Pumper | 38972 |
| Interlaken, Inc. | Fairview, OR | Installer | 38522 |
| Jkr Construction, Llc | Gresham, OR | Installer | 38945 |
| Kalkhoven Construction, Llc | Troutdale, OR | Installer | 38548 |
| Ken W Hick | Portland, OR | Installer | 39322 |
| Northwest Portables, Dba American Sani-Can | Portland, OR | Pumper | 37615 |
| Priester Properties And Construction Llc | Corbett, OR | Installer | 39873 |
| Quality Septic And Excavation Llc | Gresham, OR | Installer | 39524 |
| Ranger Excavation, Llc | Troutdale, OR | Installer | 39967 |
| Rapid Response Bio Clean Inc, Dba Synergy Environmental | Portland, OR | Pumper | 39171 |
| River City Environmental, Inc. | Portland, OR | InstallerPumper | 37506 |
16 companies in the Oregon DEQ licensed Sewage Disposal Service (SDS) installer & pumper businesses are based in Multnomah County as of 2026-07-23. Companies based elsewhere in Oregon also commonly serve the county.
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