Water is a renewable resource, to a point. The current population of the world is using water at an alarming rate, and nature cannot keep up. You may think there is enough water on earth for everybody, but when you look at the numbers, the amount readily available for consumption is very little. Of the Earth's water, 97% is salt water and 3% is fresh water, but of that 3%, only 0.003% is available for human consumption. In industrialized countries, urban sprawl is increasingly paving over land, forcing rainfall to flow to surface water, rather than seeping back into underground aquifers. This is why groundwater replenishment programs are very important to the survival of the Earth and all of its inhabitants.
