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176 Million Americans Drink PFAS-Contaminated Water. EPA Just Made It Worse.

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176 Million People, Zero New Protections

On May 18, 2026, EPA proposed rescinding drinking water limits for four PFAS compounds — PFHxS, PFNA, PFBS, and GenX (HFPO-DA). These are “forever chemicals” that do not break down in the environment or your body. The Biden administration set the first national limits in April 2024. Sixteen months later, the administration moved to gut them.

A separate rule would extend compliance deadlines for the two most studied PFAS — PFOA and PFOS — by two years, pushing enforcement to 2031. Water systems that already exceed safe levels get more time to keep poisoning people.

The Environmental Working Group reports 176 million Americans live in communities where tap water has tested positive for PFAS. That number is almost certainly low: 76% of U.S. ZIP codes with public water systems have never been tested.

“Our analysis found that 79 percent of congressional districts are impacted by PFAS-contaminated tap water that exceeds EPA thresholds.”

— NRDC, Congressional District PFAS Analysis

What PFAS Do to People

PFAS accumulate in blood, kidneys, and liver. In 2023, the International Agency for Research on Cancer classified PFOA as a confirmed human carcinogen. PFOS was classified as a possible carcinogen the same year.

The National Institute of Environmental Health Sciences estimates PFAS in drinking water contribute to more than 6,800 cancer cases annually. A USC Keck study found communities with contaminated water experience up to 33% higher incidence of certain cancers including kidney, testicular, and rare digestive cancers.

Beyond cancer: thyroid disease, immune suppression in children, liver damage, reproductive harm, and increased cholesterol. These are not disputed. They are documented in peer-reviewed research spanning decades.

Where the Contamination Is Worst

EWG has identified 9,728 PFAS-contaminated sites across all 50 states. Only Arkansas, Hawaii, and North Dakota have not detected levels above safety thresholds — and that may reflect testing gaps, not clean water.

StateKnown SitesPrimary Source
Michigan200+Military bases, manufacturing
California400+Firefighting foam, industry
New Jersey150+Chemical plants
North Carolina100+Chemours/DuPont discharge
Pennsylvania130+Military bases, industry
New York170+Manufacturing, landfills
Florida130+Military bases, airports
Wisconsin100+Paper mills, firefighting foam

Source: EWG PFAS Contamination Map, USGS Tap Water Dashboard

States Are Acting Because the Feds Won’t

During 2025, 27 PFAS bills were enacted in 13 states. New Mexico banned PFAS in cookware and food packaging. New York banned it in firefighter gear. At least 20 states are considering 47 additional PFAS policies in 2026.

But state laws cannot replace federal drinking water standards. States set the floor for products. Only EPA sets the floor for tap water.

What You Can Do Right Now

  1. Submit a public comment by July 20, 2026. The rescission rule docket is EPA-HQ-OW-2025-0654 on regulations.gov. The compliance extension docket is EPA-HQ-OW-2025-1742. Both close July 20.
  2. Register for the public hearing by July 1. EPA holds a hearing July 7, 2026 where you can deliver verbal testimony.
  3. Contact your senators and representative. Tell them to oppose the rescission and fund PFAS cleanup through the Safe Drinking Water Act. Use Resist Bot to send a letter in under two minutes.
  4. Check your water. Search your ZIP code on the USGS PFAS dashboard or EWG’s map. If your system has not been tested, demand testing from your local water utility.
  5. Support state-level PFAS legislation. Contact your state legislators about pending bills. Safer States tracks active legislation.

This brief supports the Environment and Public Lands issue hub. See also: EPA Rules Reversed.

Sources

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