Massachusetts tap water by county
Hardness, PFAS sampling, lead and violations for the largest water systems in 6 Massachusetts counties. In 6 of them, at least one large system detected PFAS in EPA testing (a detection isn't a violation).
| County | Largest system | Hardness | PFAS detected |
|---|---|---|---|
| Middlesex County | Lowell Regional Water Utility | 3.7 gpg (low) | 2 of 6 systems |
| Worcester County | Worcester Dpwp, Water Supply Division | 2.4 gpg (low) | 6 of 6 systems |
| Essex County | Lynn Water and Sewer Comm | 4.6 gpg (low) | 4 of 5 systems |
| Bristol County | City of New Bedford Dpi | 1.6 gpg (low) | 3 of 6 systems |
| Plymouth County | Brockton Water Department | 1.4 gpg (low) | 4 of 6 systems |
| Hampden County | Springfield Water and Sewer Commission | 2.3 gpg (low) | 1 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.