Water Stress And Water Scarcity

Question 0

Water scarcity

Answer 0

When that figure falls below 1000m^3 then it becomes water scarcity.

Question 1

Water stress

Answer 1

When annual supplies of water per capita falls below 1700m^3.

Question 2

Physical scarcity

Answer 2

When more than 75 per cent of a country’s river flows are being used. Basically where demand exceeds supply.
A quarter of the world lives in such a situation, including parts of the U.S. and Australia.

Question 3

Economic scarcity

Answer 3

When the development of blue water flows is limited by human and financial capacities. Basically when people cannot afford water.
More than one billion people in areas such as sub-Saharan Africa use less than 25 per cent of the river resources available.