The Chennai urban agglomeration is reported to have a population of around 9 million, and receives an average annual rainfall of about 50 inches. The Dallas Fortworth metro area in the U.S. has a population of 6.8 million and receives an annual rainfall of only 36 inches. I have lived in a Dallas suburb for a few years without experiencing any drinking water scarcity. If at all there was any shortfall in water supply, it was restricted to the operation of sprinklers to water lawns. Many residences have private swimming pools. The main reason for this happy situation can be ascribed to excellent planning. The Tamil Nadu government could seek the assistance of the U.S. government.
V. Nagarajan,
Chennai
