This article is about the beverage, if you search salt water, you might find it here.
Water is ... well, just what its name implies: Water filled into some vessel for drinking or crafting. It is created when you take any empty vessel and right-click on a water source or any other water filled vessel, cauldrons included.
The drink is not alcoholic, doesn't give you any buffs and doesn't fill you up any; you can't even use it as a brewing ingredient, unless filled in buckets. The only use of this item, as of Public Beta 25, is for making lemonade and for decoration.
Apple Juice •
Berry Juices •