Iselin, NJ water quality
Iselin, NJ is served by 2 public water systems, serving 285,704 people combined. Across those systems, we count 3 health-based violations in the last 5 years. The worst Tap Grade among them is F.
Water systems serving Iselin
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Is Iselin, NJ tap water safe to drink?
2 public water systems serve Iselin, NJ, with 3 health-based violations in the last 5 years across them. The worst Tap Grade among them is F.
Does Iselin's water have lead in it?
The most recent 90th-percentile lead sample is 0.8 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in Iselin's water?
Yes — at least one water system serving Iselin has detected PFAS under UCMR5.
Other cities in New Jersey
See all of New Jersey →Source: EPA SDWIS/ECHO · Data as of 2026Q2