Idaho tap water by county
Hardness, PFAS sampling, lead and violations for the largest water systems in 1 Idaho county. In 1 of them, at least one large system detected PFAS in EPA testing (a detection isn't a violation).
| County | Largest system | Hardness | PFAS detected |
|---|---|---|---|
| Ada County | Veolia Water Idaho | 6.6 gpg (low) | 3 of 6 systems |
Public-record figures, not a test of your tap. Not 100% accurate or guaranteed. Confirm with a water test, your utility or a qualified pro before you buy or act.
Hardness confidence: high = utility report; low = county estimate of untreated local water. Don't see your county? Use the water quality lookup.