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CNBC

These U.S. states have the best and worst tap water: Washington ranked No. 1 while Arizona came in dead last

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Summary
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83% Informative

J.D. Power ranked the states with the best and worst tap water based on its U.S. Water Utility Residential Customer Satisfaction Study .

Customers were asked to rate the quality of water in terms of taste, color, odor, hardness, and other factors on a scale of one to 10 , with one being unacceptable and 10 being outstanding.

Washington ranked as the best tap water, with 84.5% of customers giving their water positive marks.