Distribution and Pollution One of the problems is Distribution. Water is not in the place where it is needed, or it does not arrive at the time when it can be used. For example, one portion of a state might receive a great deal of rain while the other portion receives almost none. This is the case in Washington State which receives abundant rain along the west coast, but experiences near desert conditions in the east. In both of these cases, better distribution of the water would solve many of the problems.
Flooding is also a distribution problem in that some areas receive more water than they can handle.
Another problem is Pollution. There may be an abundance of water, but if it is too polluted to use, the problem is the same as having no water at all.