Also, another reason not to drink the water, is that some aircraft fly international. When flying from the Mexico to the USA (for example!), many people would get the runs from drink anything with ice, or the water. I dont know if this holds true anymore, but the stagnancy of water still does. At least the water going INTO the tank is fresh.
Two all beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.