It would not be wise to discharge into the sea a quantity of rainwater equivalent to one year’s needs monsoon after monsoon, while at the same time talking of desalination. Furthermore, we cannot overemphasize the danger that excessive pumping of groundwater from coastal aquifers will result in seawater intrusion into those aquifers, creating permanent and irreversible damage to the water supply. Thus, rainwater harvesting, while important in every major town and city the world over, is particularly important in coastal cities. Setting up more Rain Centres across the length and breadth of every country as a mass movement is the need of the hour. Cities throughout the world, which are water starved but not rain starved, will have to be identified and selected for this purpose.