A number of the bottled waters have traces of minerals that are toxic; this is normal for all water taken from aquifers or other natural sources.
Tap water is as safe as the bottled waters. Unless one wants fizz or some other property, or needs to carry water in the desert or jungle, bottled waters are a waste of money and materials.

I remember friends from an area in west Texas where the water was high in fluoride concentration; no tooth cavities but brown discoloration.