If you have become a pitiful and truly foolish bottled water addict try this experiment says Richard Ehrlich in his book The Green Kitchen.
Take 2 bottles, one empty and one containing your store-bought water. Fill the empty one with tap water, then refrigerate both overnight. Overnight chilling brings them to identical temperatures and allows any odour of chlorine (a harmless and essential antimicrobial) to dissipate.
In the morning get someone to pour the waters into two glasses without telling you which is which. Taste them side by side. Can you identify them? If your blind tasting reveals no differences, quit your expensive, environmentally destructive habit on the spot!
Remember that “bottled water is “ostentatiously useless” as the writer Ian Williams, in the excellent What to Eat by Professor Marion Nestle, says!