Earlier quoted context omitted.
I would not drink American tap water, at least not in the cities that I travelled. It always smelt like chlorine and from what I googled apparently up to 4 milligrams per liter are regularly allowed in the US. This is definitely not a thing in western Europe. We don't need to talk about the things that you cannot taste or smell and what happened in Flint.
I cannot add to my post above, but since people don't seem to take it well, I'd like to add some data to back it up. Here is the link to a paper that compared contaminants in drinking water in various developed countries. When it comes to residual chlorine the USA demonstrated the highest levels followed by Singapore and Canada. After these three countries there was a huge gap before the UK and other countries which…
Residual levels show 3 mg/L of chlorine in the United States which is higher than most other countries (Singapore, and to a lesser extent, Canada, excluded.) What I don't understand is why you see these levels, which are considered safe by most health agencies, as a cause for concern. As another commenter pointed out, the chlorine exists to ensure the water is safe to drink.