What area has the lowest amount of naturally available freshwater per capita?

The Middle East has the lowest amount of naturally available freshwater per capita.

Explanation:

The unavailability of freshwater resources and the terrain characterized by the dominant existence of wide stretched deserts leave the Middle East with the lowest amount of water per capita. Moreover, very little vegetation and featureless landforms bring down the rate of precipitation adding more to the scarcity of water. In order to tackle the scarcity of water, the countries of the 'Middle East have developed technologies' that help to turn saline ocean water into usable soft water.