> Tap-water is very much a hit-or-miss here in Germany. In some cities (like Berlin) it's almost hazardous, while in other cities it's very drinkable.
I'd like to see a source for that. Tap water in Berlin is perfectly fine and drinkable. Tap water is actually held to standards that are at least as strict as bottled water. The only issue that can possibly arise is that you're living in an old house that still has lead piping, though those are very uncommon today. If you're in doubt you can have your water tested for 20 EUR, if there's a pregnant person or an infant in the household it's free: http://www.bwb.de/content/language1/html/blei.php
I'd like to see a source for that. Tap water in Berlin is perfectly fine and drinkable. Tap water is actually held to standards that are at least as strict as bottled water. The only issue that can possibly arise is that you're living in an old house that still has lead piping, though those are very uncommon today. If you're in doubt you can have your water tested for 20 EUR, if there's a pregnant person or an infant in the household it's free: http://www.bwb.de/content/language1/html/blei.php