I just don't like the chlorine that they have to use to make tap water safe -- which it is.
The chlorine is removed by filtering - which is what I do.
I know that there is rather a lot of chlorine in my supply because I can smell it when I run a bath.
Chlorine is hazardous to health
Water sources of pollution
I consider that bottled water is more likely to have untreated contaminents than tap water. I don't believe that mountain springs aren't polluted.
Filtration of your tap water is the way to go
See my post#3 for the system I use - easier than jug filters