Well friends I would imagine that the scramble for water will be much more in future than the rush for food. After all every individual would need 40 lit/day of water where as the food will be volumetrically about a liter or two only.
Given the climate change phenomenon, and the way it is predicted to play out, I am extremely fearsome about water availability to the people in the countries in Africa, India and china.
We have to in right earnest teach and train the newer generations as how to economise the use of water.
The local town and city and state governments as well as the national government will have to launch programs of water conservation and water economy.

Otherwise we are going to be be in deep tropuble.