Top 10 States With the Worst Tap Water in the USA 2025

 10. Kentucky – Persistent water contamination from past coal slurry spills.

States With the Worst Tap Water

 9. West Virginia – Ongoing issues from the 2014 chemical spill.

States With the Worst Tap Water

 8. California – Over 385 failing systems with contaminants like uranium.

States With the Worst Tap Water

 7. Washington – Contaminated by stormwater runoff and toxins.

States With the Worst Tap Water

 7. Washington – Contaminated by stormwater runoff and toxins.

States With the Worst Tap Water

 5. Arizona – Phoenix has the highest levels of chromium-6 and PFAS.

States With the Worst Tap Water

 4. North Carolina – High PFAS contamination in water systems.

States With the Worst Tap Water

 3. Texas – Leading in public water violations.

States With the Worst Tap Water

 2. New York – High contamination levels reported across the state.

States With the Worst Tap Water

 1. New Jersey – Lead pipes and high levels of TTHMs, HAA5, and arsenic.

States With the Worst Tap Water