Here in Germany, water is the best protected good that we have - maybe apart from beer :o) - and that is as it should be. It usually tastes good and I use it all the time (stopped buying bottled water long ago). In a bar or restaurant, tap water has to be free. They don't like that and try to sell you more expensive stuff, but the law requires free water. Great, isn't it? I was indeed shocked by the amount of chlorin…
There is no water fountain at the Munich airport.
True and not necessary. You may go to the restrooms and use the tap there. Sound a bit weird, but the water is as pure as everywhere else (make sure the tap is clean) and as the water flows more or less non stop, it is even very cold.
We usually refill our empty bottles there after security.