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Discover which city has the best water quality in each U.S. state. This ranking shows the top-performing city from all 50 states plus Washington D.C., based on EPA data, contaminant levels, and compliance records.
Average score of the best city in each state, grouped by region
The city with the best water quality in each state, ranked nationally. Click any city or state to see detailed water quality data.
Click any state to see the top 20 cities with the best water quality
Best 50 cities across all states
Cities with lowest contamination levels
Cities with perfect EPA compliance
Low lead, low nitrates - safe for kids
Rankings by population category
Cities with most concerns