Question

Everyone knows that water is important. Who doesn’t like to drink a cool glass of water after a long day? But some people don’t seem to worry about polluting the local water supply. They should! I like water, and so should everyone else.

What change would most improve this introductory paragraph?

providing additional examples of the importance of water
emphasizing further the foolishness of not caring about water
providing summary evidence of the bad impacts of water pollution
emphasizing that water pollution is as bad as air pollution