Not To Drink Water In Aircraft
You should do everything in the aircraft but not to drink the water until it is bottled. Reliable sources say that the water in the lave is bad enough to wash your hands. Definitely it is sanitized time to time with efficient cleaners but many parasites are there to generate tolerance against those cleaners. As the ports for purging expletive and refilling the potable water in aircraft are generally a feet away from each other, you should avoid drinking water from aircraft in the flight.