The importance of water as a natural resource are :
(i) It is essential for domestic consumption.
(ii) Agriculture uses maximum water through irrigation.
(iii) Industrial purposes (cooling machines).
(iv) Indispensable for disposal of sewage.
Methods of conserving water are :
(i) Development of rainwater harvesting techniques and watershed development.
(ii) Creation of more water storage reservoirs.
(iii) Inter-basin transfer of water.
(iv) To raise the underground water level.