NEW DELHI: It is 5 a.m. and Algarathnam Natarajan is already in his van, fitted with two large water containers, ready to drive through Delhi’s poor neighborhoods and refill the earthen water pots he has installed there. This has been his daily routine throughout the summer for the past decade. With Delhi temperatures routinely rising above 40 degrees Celsius from May to early July, many of the city’s millions of poor residents struggle to stay safe and cool, as most can hardly even afford potable water.