NEW YORK -- A joint study out of New York just uncovered how clean - or dirty - the water is on nearly a dozen major airlines.
The study ranked the airlines based on E. coli and coliform levels as well as the airline's number of water-related EPA violations.
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Alaska Airlines, Allegiant Airlines, and Hawaiian Airlines were credited with having the cleanest water.
The dirtiest water goes to Spirit Airlines, Jet Blue, and United Airlines.
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While most water is bottled, all airlines have water tanks that are used for making coffee, tea and sometimes ice.