It's 6 a.m, and you've just been awake for two hours, making your way to the airport. You didn't have enough time to snatch an espresso or sandwich at the gate, so you choose to have coffee and a flavorful in-flight breakfast. Sound natural?

Free coffee on an early flight is appealing, yet as indicated by the United States Environmental Protection Agency (EPA), it's not by any means the most healthy choice. Why? Since in-flight coffee and tea is made by using plane tap water.

THE TAP WATER IS NO GOOD.

In 2004, the EPA released an enquiry saying that after testing the drinking water on board 158  airplanes, 13 percent of them didn't fulfill EPA guidelines. As it were, some of them had contaminated water. These flights were positive for coliform microorganisms, and some even had E. coli.

In spite of the fact that planes are supplied with water for the flight, that water isn't generally the cleanest. As indicated by a recent report done by the International Journal of Environmental Research and Public Health, the organisms are likely exchanged from contaminated tanker trucks which transport water to the planes.

SO IS THE WATER TESTED NOW? SHORT ANSWER: MAYBE.

In spite of the fact that upgrades have been made since the first EPA report, airline staff aren't certain that the water is still totally safe to drink. Fifteen years back, the EPA pushed for a requirement to enforce the recurrence of testing the aircraft's water. This would appear the best possible answer for the issue, however some state that it doesn't occur as regularly as we hoped.

In a meeting with Business Insider, the Association of Flight Attendants-CWA stated that they don't "believe this regulation goes far enough or is sufficiently enforced."

So next time you're on a flight, you might need to rethink your free beverage alternative.

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