Yuck! These Are The 10 Dirtiest Spots on a Plane

3. Tap Water, Tea, and Coffee

You’ve just woken up from a lousy one-hour on-and-off nap to the joy of a tea and coffee trolley slowly moving toward you in the plane aisle. A quick shot of caffeine may give you the kick you definitely need to fight off the potential jetlag, but you’d be getting a shot of germs at the same time.

You may be wondering why. Well, the in-flight tap water (which is the one used to brew coffee and tea) runs through a series of pipes and tanks that are cleaned sporadically and rarely. As a rule of thumb, it’s always best for you (and your health) to bring your own bottle of water on the plane in case the flight attendants run out and need to use the tap water. Better safe than sorry!