Such a can of worms, Sheila.

Most tap water is full of junk, filtered water in bottles is stripped of mineral content and adds to pollution.

The best I've come up with is filtering with Brita and then adding some Celtic sea salt. Some people swear by well water but it can be bad if something nasty seeps into there.

To some degree, water is water. But combined with everything else, drinking toxins can be another hindrance to our health no matter how you cut it.