New Jersey tap water by county
Hardness, PFAS sampling, lead and violations for the largest water systems in 10 New Jersey counties. In 10 of them, at least one large system detected PFAS in EPA testing (a detection isn't a violation).
| County | Largest system | Hardness | PFAS detected |
|---|---|---|---|
| Bergen County | Veolia Water New Jersey Hackensack | 7.5 gpg (low) | 6 of 6 systems |
| Middlesex County | Middlesex Water Company | 9.2 gpg (high) | 6 of 6 systems |
| Essex County | Newark Water Department | 3.1 gpg (high) | 4 of 6 systems |
| Ocean County | Nj American Water - Coastal North | 60–140 mg/L (varies) (high) | 3 of 6 systems |
| Union County | Nj American Water - Raritan | 10.5 gpg (low) | 4 of 4 systems |
| Camden County | Nj American Water - Western | 2.5 gpg (low) | 5 of 6 systems |
| Passaic County | Passaic Valley Water Commission | 106–242 mg/L (varies) (high) | 6 of 6 systems |
| Morris County | Parsippany-Troy Hills Water Department | 4.8 gpg (low) | 6 of 6 systems |
| Mercer County | Trenton Water Works | 6.3 gpg (high) | 2 of 5 systems |
| Somerset County | Franklin Township Dept of Public Works | 4.5 gpg (low) | 3 of 3 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.