Bottled water has always been a disaster. I have to wonder how much underinvestment there’s been in municipal water infrastructure because rich people just buy expensive bottled water that’s been shipped from all over the world.
People buy bottled water for a lot of different reasons. For example, the fact that you don't have to keep track of an empty bottle, and then clean that bottle.
Reusable water bottles also have a lot of bacteria.
(Although, I freely admit I find it silly to drink bottled water at home or in the workplace.)