4 providers on record in Washington County. For the recorded septic documents themselves, see septic records for Washington County, Idaho.
| Company | City | Phone | Rating |
|---|---|---|---|
| A3 Underground Construction | Cambridge | (208) 630-3017 | — |
| Advanced Terrain Design | Weiser | (208) 550-2569 | — |
| Cannon Clean Up Service | Weiser | (208) 996-2525 | — |
| MC Underground & Septic Service | Cambridge | (208) 315-7743 | — |
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