This is the greatest idea ever: Water Bar
One of the Great Crises we face in today's world is the stability and security of the water supply. In America, most people don't have any problems getting water, to the extent that we tend to waste it, and few people even know where there water comes from. Every now and then there emerges a startling and troubling problem with water. A river catches fire, a plume of visible pollution observable from space spreads across a lake, or an entire city worth of children are poisoned with the contents of the city water supply.
Source: scienceblogs.com