A university studied the water quality on planes. You may want to skip the coffee on these two airli

CNN) — You've probably never given much thought to the quality of the water on an airplane.
Maybe it's time you should.

A recent study ranks the water served on major and regional US airlines.

Drink up if you're on an Alaska Airlines or Allegiant Air flight. Those two airlines tied for first place in the rankings in the study, from the Hunter College New York City Food Policy Center at the City University of New York and the website DietDetective.com.
But you might need to exercise some caution if you're on a JetBlue or Spirit flight. They tied for last among major airlines in the study, which came out at the end of August.

CNN reached out to Spirit and JetBlue for comment on their low rankings and is waiting to hear back.
The study was not a review of the bottled water that's often served in airplanes, but instead a look at the water used to make items like tea and coffee, as well as the water used in the bathrooms.

https://www.cnn.com/travel/article/airline-water-study-wellness-trnd/index.html