I'm especially interested in how people are thinking about water issues. I work in water conservation, so it's not that I want to know more about water myself, but if I were to develop an educational program for the public, what would you, as a member of the public, want to know most?
Then I would ask for How do I determine the water quality, by using simple practical methods? Are there different kind of drinking water? What kind would be better for people with a specific health condition? How much damage/alteration happens when water is bottled within plastic or glass? What should I do when traveling to places "not well organized" regarding drinking water? Is river/lake water good for people when it looks clean/clear?