In an attempt to find out the reason for this man-made disaster, DT Next visited some of the worst-affected areas like T Nagar, KK Nagar and Kolathur, talking to residents and local activists for the past three weeks. Equipped with the findings, DT Next spoke to Chennai Corporation Commissioner Gagandeep Singh Bedi to find out what the civic body plans to do to find a permanent solution to the perennial problem. Excerpts from the interview with Bedi, a disaster management expert, who led from the front during the 2004 tsunami and Cuddalore floods: