Having lived in California for the past year, before moving to Oregon, I've been made pretty aware of the need to treat water as a precious commodity.
I remember reading a sign during the drought at the entrance of a bar in Newport Beach which read: Save water, drink beer. It made me smile, but not for long, as I now know too well how much water crops require.
It virtually only takes 1 gallon of water to produce 1 gallon of water.
So keep that it mind next time you're thirsty. And don't forget to always take your canteen with you when you leave home.
Also, you can download on your phone the findafountain or the WeTap app on your phone in order to find the closest drinkable water fountain in your area.