BERLIN, GERMANY - NOVEMBER 27: A retrofitted Lufthansa plane equipped with medical isolation facilities for Ebola cases arrives for a media presentation at Tegel airport on November 27, 2014 in Berlin, Germany. The airplane, dubbed the "Robert Koch" and commisoned by the German government, will serve as a MedEvac option for health workers who are in western Africa participating in the international effort to stem the spread of the deadly Ebola virus. The German Red Cross (DRK), emergency services group (THW) and the Bundeswehr have sent volunteers to treat ebola cases in Liberia and Sierra Leone. (Photo by Sean Gallup/Getty Images)

Here’s something to make air travel even MORE unpleasant.

A new study found you really shouldn’t go anywhere near the WATER on planes. The researchers found that only three of the 11

major airlines in this country have water onboard their planes that’s safe to drink:  Alaska, Allegiant, and Hawaiian.

The two airlines with the worst water are JetBlue and, of course, Spirit. They all serve bottled water to drink . . . but that’s not the only time you come into contact with water on a flight.

So the people behind the study say you should avoid drinking the coffee or tea on board PLUS  instead of washing your hands in the airplane bathroom, use hand sanitizer.

Have you ever drank the water or