My understanding is that the amount of chlorine added to the tap water differs between regions. I read it can be a lot in the US.

Here in Germany there is a limit by law of 0.3mg per liter and most districts use between 0.03mg and 0.05mg per liter.

We drink tap water daily. There is no noticeable chlorine smell but I heard from friends their cat seems to not like it and drinks rainwater only.