First they should know to make use of water so that it is used judiciously and wisely for the betterment of tomorrow
second, there should be strict action  must be taken against wastage of water
third,should collect money from the inmates of locality to implement new technologies like artificial rain,  recycling of water
fourth water should not be wasted like for washing of cars,  roads etc 
fifth should make use of sun i.e solar energy to generate electricity and then to get water
fifth should do rain water harvesting in rainy days so that it provides sufficient rain to thirst water problems in summers