Do you feel their would be scarcity of water in future and we 'd not have water?

yes

Hello,Ramyashree! It is a well known fact that drinking water is not abundantly available in many parts of the world.even in my area in certain localities the ground water level has gone down and in some areas it has been contaminated.I have a deep well in my garden.it was dug some thirty years back and it has now been contaminated and hence i am not using the water for drinking purpose and now i fully depend upon the supplied water.it is also often running shortage.so we preserve water atleast for a day or two.so be careful,and try to save water.don't allow water to go waster.thanx.

There already is a scarcity of fresh water in certain parts of the world. I think if we don't have water the world would pretty much come to an end. All living things need water.