Every summer, Bengaluru, India’s IT hub, faces an acute shortage of water. Water tankers criss-cross the city as residents wait patiently. Over the years, the city’s lakes have become cesspools or have been encroached upon. Open wells, which once recharged Bengaluru’s groundwater, have vanished. The city’s lone source of water is now the Cauvery river which can’t meet the demands made on it by so many consumers – industry, farmers, citizens and the nearby state of Tamil Nadu.
Ironically, Bengaluru is not short of rainfall. The early city, founded. . .