Oregon tap water by county
Hardness, PFAS sampling, lead and violations for the largest water systems in 4 Oregon counties. In 2 of them, at least one large system detected PFAS in EPA testing (a detection isn't a violation).
| County | Largest system | Hardness | PFAS detected |
|---|---|---|---|
| Multnomah County | Portland Water Bureau | 7–80 mg/L (varies) (high) | 0 of 6 systems |
| Washington County | Tualatin Valley Water District | 3.5 gpg (low) | 0 of 6 systems |
| Clackamas County | Lake Oswego Municipal Water | 1.6 gpg (low) | 1 of 6 systems |
| Lane County | Eugene Water & Electric Board | 1.1 gpg (low) | 2 of 5 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.