According to Kat Kamalani, water should be avoided at all costs while on a flight here’s why.

Brace yourself her advice might surprise (and perhaps even disgust) you.

To make matters worse, those water tanks are located right next to the lavatories.

glass of water in a glass on an airplane tray table

Credit: Cameris/Getty

More recent studies have not been very promising, either.

Several factors were taken into consideration, including fleet size and positive E. coli and coliform water sample reports.

Any score above three indicated relatively clean drinking water, according to the study.

Instead, the study recommends usinghand sanitizer.