How much clean, drinkable water is left on Earth and what is being done to combat an eventual shortage?

Question

How much clean, drinkable water is left on Earth and what is being done to combat an eventual shortage?

In: Earth Science

Answer 1

There is 1.386 billion km³ (333 million cubic miles), of water on Earth. The issues of drinking water are mostly about cost. People expect water to be almost free, on average it costs $0.004 per gallon. It that price, supplies are scarce. At higher prices, there is plenty.