BANGALORE:Waiting under the scorching sun for a tanker truck to deliver water to his home, Chandra Shekhar reminisced about how his southern Indian city once brimmed with pristine lakes and lush gardens. “They are all gone now. They have been consumed by buildings and more buildings,” said the 59-year-old retired engineer, who has seen the IT hub of Bangalore – often dubbed India’s Silicon Valley – transform since he was a boy. “Bangalore has gone from being the city of lakes to the city of concrete. Because of this, all the water has disappeared.” Years of rapid urbanisation, a swelling population and poor water management have led to drying taps, falling groundwater levels and filth-frothed lakes that can burst into flames. Bangalore is paying a heavy price for its success since marketing itself as a tech hub in the late 1990s and attracting top firms including Microsoft, IBM, Dell and Google.