I never do unless unless I'm traveling and I don't trust the local water, and on occasion when I'm out and I forgot to bring a water bottle. At home, I just drink tap - I leave it in the fridge to get rid of the chlorine smell, otherwise the water tastes just fine. I know some mineral waters are perceived like wine and appreciated that way (not by me) but I'm more curious about generic bottled water - the stuff that beverage companies make using municipal tap water run through a reverse osmosis system. It seems awfully costly, from an environmental point of view, in energy for production, transport, plastics.
It seems others think so, too: in London, Ontario, sales of bottled water at all city-run facilities are going to be banned, and it appears other Canadian cities are considering it:
I'm curious whether anyone generally drinks bottled water when tap is safe, and if so, why.