Availablity of water is decreasing day by day ,ground water level is also decreasing if it continuous we people will have to face many problems .there wont be sufficient water for the comming generations. the kidney prablems will increase. we will have to buy water in such a big price . for preventing this situation the best way is to start rain water harvesting.we should stop dumping waste into water bodies . we have to reduce use of excessive chemicals in soil because it may protrude into the soil and poison the ground water.