Since I'm Dutch and near Amsterdam (we have the same water facility over here) I can guarantee you that the Dutch tap water is of very high standard. You only buy bottled water if you are a hipster here.
I leaved for 3 years in Amsterdam coming from another European country, moved flat several times and always had bad tap water in my house. I never got sick though, but the taste was always awful. My feeling was it was not the water that was bad, but more the pipes, as most house I leaved in was old. Either way, I gave up and bought water bottle
Thanks. That’s comforting to hear. My gut instinct was that as well, and I am going back to tap water now.
In case you're curious, look up Bar-le-duc mineral water and the place where the city of Utrecht gets it's water from.