I very rarely drink water, especially the bottled variety, even less, water in plastic bottles. I don't trust the contents of water. If it's in plastic bottles, it can be stored for a long time, and chemicals from the plastic can get into the water, hence the "use by" date, which should be "consume by". And there could be anything in tap water. Didn't they find traces of Ibuprofen in tap water not long back? Water can be very bad for you!
Seen on a label of bottled water in a supermarket:
"Filtered over millions of years in the mountains of Bavaria. Best before Sept 2019" Good innit?!!