Question

what are the reasons for water scarcity ?????

Answer 1

(i) Seasonal and annual variation in precipitation.
(ii) Unequal access.
(iii) Overexploitation.
(iv) Availability of water varies over space and 

Answer 2

Scarcity arises when demand exceeds supply (in other words, availability). Water is used in almost everything in our everyday life. Try to live a day imagining there is no water. You will realize you can’t even manage an hour. And with all these improvement of real estate sector and soft drink companies etc, groundwater depletion happens. In order to reduce the impact of these things (we can only help reduce, not avoid it) try to contribute your part .