Tap water here tastes nicer than bottled water. And water is all I drink (with the exception of coffee in the morning and when I get home from school, and alcoholic beverages when I'm out with my friends) so usually I fill up two or three plastic botttles with tap water and that lasts me the school day. Then when I get home, I'm constantly refilling my bottles. Only time I drink bottled water is when I'm outside and in a position where I don't have any tap water on me.