> In some cities (like Berlin) it's almost hazardous, while in other cities it's very drinkable. I've been drinking tap water in Berlin every day for three yea

> In some cities (like Berlin) it's almost hazardous, while in other cities it's very drinkable. I've been drinking tap water in Berlin every day for three years now. I had no problems and find it quite tasty. Do you have a source (pun intended) for that?