Millions of people in India’s southern city of Chennai are struggling as taps run dry.
Trains and trucks have been bringing water in for residents, but it comes at a cost.
Environmentalists are warning this is a problem which could soon affect many other countries.
Produced by Varun Nayar and Kunal Sehgal.
Report by Rajini Vaidyanathan.
Chennai, the city where drought is visible from space