Why is the conservation of water resources essential in India?

Conservation of water resources is essential in India due to following reasons:
(i) To safeguard ourselves from health hazards as the quality of water is badly affected by discharge of urban wastes, industrial effluents, pesticides and fertilisers.
(ii) To ensure food security to the people.
(iii) Continuation of human activities and prevention of degradation of environment.
(iv) To control over-exploitation and mismanagement of water resources leading to depletion of water and ecological crisis affecting the lives of millions of people.