Looking for an excuse to have a glass of wine mid-flight? This could be it!

Drinking plenty of fluids during a flight might seem like a sensible thing to do but there’s one beverage that cabin crew say you should never order onboard – water.

Considered the worst drink you can ask for while flying, a flight attendant revealed to Business Insider that you should never drink tap water mid-flight because the dirty little secret is that it can be pretty dirty.

“Flight attendants will not drink hot water on the plane,” the attendant said.

“They will not drink plain coffee, and they will not drink plain tea.”

This is because while the water tanks do get cleaned, they’re never informed when or how often.

As a result, they’re not sure how clean the water is at any given time and stay away from water, hot or cold, altogether unless it’s bottled