ECONOMICS (CBSE/UGC NET)

Detailed explanation-1: -"Water stress” has been used as parameter to measure water scarcity, for example in the context of Sustainable Development Goal 6. Half a billion people live in areas with severe water scarcity throughout the year, and around four billion people face severe water scarcity at least one month per year.

Detailed explanation-2: -Four billion people-almost two thirds of the world’s population-experience severe water scarcity for at least one month each year. Over two billion people live in countries where water supply is inadequate.

Detailed explanation-3: -India’s water and sanitation crisis Out of its population of 1.3 billion people, 91 million people (6% of the population) lack access to safe water, and 746 million people (54%) lack access to safely managed household sanitation facilities.

Detailed explanation-4: -Annual per-capita water availability of less than 1700 cubic meters is considered as water stressed condition, whereas annual per-capita water availability below 1000 cubic meters is considered as a water scarcity condition.

Detailed explanation-5: -Climate change is causing drought in some areas while some other areas are flooded. If this negative impact continues, by 2025 about two billion people will face total water scarcity.