Do you like tea? Black (as in unsweetened) tea is essentially water but tastes better (which is why I always order iced tea when I go to restaurants since it will most likely taste better than the tap water).
You can even make your own easily, simply sun-brew four gallon jars of tea on sunday (or one every two days if you don't have room in your fridge to store 4 gallon jars), make sure to drink half a jar each day.