TIL that an annual supply of bottled water for a person who consumes 8 glasses a day would cost approximately $200; the same amount of tap water would cost approximately $0.33.

https://en.wikipedia.org/wiki/Bottled_water#Pricing%5C

https://www.reddit.com/r/todayilearned/comments/15oxpz5/til_that_an_annual_supply_of_bottled_water_for_a/