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New Jersey Tap Water Quality Rankings 2026: 19th in Nation | WaterQ

Alex Carter
By Alex Carter
Water Quality Researcher · Published 2026-04-02

New Jersey ranks 19th in our 2026 national tap water quality analysis — a middle-of-the-pack position that reflects a genuine tension between the state's aggressive, nation-leading PFAS regulations and the lead-related risks tied to its dense, century-old urban housing stock.

Key Findings for New Jersey

Reviewing EPA and state SDWIS data for 2026, a few patterns define New Jersey's water quality landscape:

  • PFAS Leadership: New Jersey was the first U.S. state to adopt enforceable maximum contaminant levels for PFOA and PFNA, ahead of the federal EPA. Utilities across the state have invested in granular activated carbon (GAC) and ion-exchange treatment to meet these standards.
  • Newark Lead Service Line Program: Following elevated lead detections in 2016-2019, Newark undertook one of the fastest large-scale lead service line replacement programs in the country, replacing tens of thousands of lines in a few years.
  • Dense, Aging Infrastructure: New Jersey's high population density and large share of pre-1986 housing mean lead service lines and lead solder remain a distribution-side risk in many older municipalities, not just Newark.

Most Common Contaminants in New Jersey

Here's what New Jersey residents should know about the contaminants most relevant to their water:

1. PFAS ("Forever Chemicals")

New Jersey's enforceable limits for PFOA, PFNA, and PFOS are among the strictest in the nation. Many utilities have already installed GAC or ion-exchange systems specifically to meet these standards, which is one reason the state performs relatively well overall despite urban infrastructure challenges.

2. Lead

Lead enters tap water primarily through lead service lines and lead solder in homes built before 1986. Newark's experience — a major public health response followed by an accelerated replacement program — has become a model that other New Jersey municipalities are following at a smaller scale.

3. Disinfection Byproducts

Some systems drawing from reservoirs and rivers, particularly in northern New Jersey, monitor for trihalomethanes (TTHMs) and haloacetic acids (HAA5), which can form when disinfectants react with organic matter in source water.

New Jersey's Best and Worst Cities for Water Quality

See the full breakdown on our New Jersey water systems page.

Top Performers: Systems that completed PFAS treatment upgrades early, and municipalities that have made significant progress on lead service line inventories, tend to show stronger overall compliance records.

Areas to Watch: Older industrial cities with a high share of pre-1986 housing remain the focus of ongoing lead service line replacement work, even where treatment-plant water quality itself is strong.

What New Jersey Residents Should Do

Given New Jersey's 19th place ranking, here's what residents should prioritize:

  1. Check Your Service Line: Many New Jersey municipalities have published lead service line inventories — contact your utility to find out if your home is affected and where it stands in the replacement queue.
  2. Search Your System's Record: Use the WaterQ search tool to view your water system's PFAS and lead compliance history.
  3. Use a Certified Filter: NSF/ANSI 53 or 58 certified filters can reduce both lead and PFAS at the tap while infrastructure upgrades continue.
  4. Stay Informed on PFAS Updates: New Jersey continues to refine its PFAS standards — check your utility's annual water quality report for the latest results.

Frequently Asked Questions

How does New Jersey water quality compare to other states?

New Jersey ranks 19th in the nation for 2026. New Jersey has been a national leader in regulating PFAS, with some of the strictest state-level drinking water standards in the country, which helps its overall standing despite aging infrastructure in older cities.

What are the most common contaminants in New Jersey tap water?

The leading concerns in New Jersey are PFAS (New Jersey was the first state to set enforceable limits for PFOA and PFNA), Lead (especially in older cities like Newark and Trenton with pre-1986 housing stock), and Disinfection Byproducts in some systems using surface water sources.

Is it safe to drink tap water in New Jersey?

Water leaving New Jersey treatment plants is held to some of the strictest state standards in the country, particularly for PFAS. The main residual risk is lead from older home plumbing and service lines in cities with significant pre-1986 housing, which is why New Jersey has invested heavily in lead service line replacement programs.

Source: New Jersey Department of Environmental Protection Division of Water Supply and Geoscience, EPA SDWIS 2026 Compliance Data, and WaterQ National Database. For more information on our ranking process, visit our state rankings page.