Why You Should Skip In-Flight Coffee Every Time - Chowhound

The water the flight staff uses for coffee comes from a tank that gets filled upon landing. And while the water that's put into that tank is probably fine, the tank itself isn't cleaned with any regularity. This can cause the water to become sub-optimal if bacteria are allowed to proliferate in the tank. Tests done on certain American airlines have brought back less-than-ideal results, with one 2019 study…