Water quality · New Jersey
Water quality in New Jersey
Water quality (EPA SDWIS) data for ZIP codes in New Jersey. Pick a ZIP below to dive into the water quality summary.
Last verified 2026-06-10 · methodology
What lands here
Pages show the CWS serving the address, any health-based violations in the last 3 years, most recent lead and copper sampling result, and a link to the primary SDWIS record.
Source & refresh
EPA SDWIS. Refreshed quarterly (federal mandate). Primary source →
New Jersey top concern
Lead service lines, coastal flood, sea-level rise
New Jersey has heavy LCRR obligations in Newark, Trenton, Camden, Paterson — Newark's 2018-2021 lead crisis triggered statewide LSL replacement requirements. Coastal AE/VE FEMA zones from Sandy Hook to Cape May face accelerating Risk Rating 2.0 premium pressure.
See New Jersey state page for the full state-level rollup across all 12 dimensions.
Read more on water quality
Editorial deep-dives explaining the source data, its limits, and how to read it.
Flood zones explained — what AE, X, and VE actually mean
Plain-English guide to FEMA flood-zone codes (A, AE, AH, V, VE, X, X-shaded). What the 1% and 0.2% annual-chance zones mean for your property and your insurance.
EPA Radon Zones — what 1, 2, and 3 mean and when you should test
EPA classifies every US county into Zone 1 (high), Zone 2 (moderate), or Zone 3 (low) for radon. Plain-English guide to the classifications and at-home testing.
EPA AQI categories explained — what 0–50 Good through 301–500 Hazardous mean
Plain-English guide to the six EPA Air Quality Index categories: 0–50 Good, 51–100 Moderate, 101–150 Unhealthy for Sensitive Groups, 151–200 Unhealthy, 201–300 Very Unhealthy, 301–500 Hazardous — what each level means and who is at risk.
Lead and Copper Rule 2024 — the federal lead-pipe inventory mandate
The 2024 Lead and Copper Rule Revisions (LCRR) require every US community water system to inventory and report lead service lines. Plain-English guide.
8 New Jersey ZIPs
ZIP 07302
Jersey City, NJ
Water quality →
ZIP 07103
Newark, NJ
Water quality →
ZIP 07666
Teaneck, NJ
Water quality →
ZIP 08540
Princeton, NJ
Water quality →
ZIP 07030
Hoboken, NJ
Water quality →
ZIP 07604
Hasbrouck Heights, NJ
Water quality →
ZIP 08901
New Brunswick (NJ), NJ
Water quality →
ZIP 08902
North Brunswick, NJ
Water quality →