| Company | Location | Certifications | License # |
|---|---|---|---|
| Balderson Excavation LLC | Council, ID | Installer | — |
| Dion Services LLC | Mesa, ID | Installer | — |
| TB Construction, LLC. | New Meadows, ID | Installer | — |
| TCY Excavation | Council, ID | Installer | — |
4 companies in the Idaho DEQ permitted subsurface sewage disposal system installers and septic tank pumpers are based in Adams County as of 2026-07-23. Companies based elsewhere in Idaho also commonly serve the county.
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