fact: 70.8% of Earth's surface is covered by water

fact: 97% of that water is salt water. We cannot use it, as is, for crops or drinking.

fact: 2% of the water is in the form of glaciers, especially near the Poles. Way too far from population centers to be economical to melt and use.

fact: Fresh water that we can drink and use to irrigate crops is about 1% of the total. Hard to put a price on something that precious.