A WWF report has found 100 cities worldwide are expected to suffer acute water risks by 2050.
30 Indian cities, including Delhi, Kolkata, Bengaluru and Mumbai, figure on the list.
Nearly 50 Chinese cities also find a mention.
The problem is being blamed on rapid urbanisation, irregular climates and inappropriate infrastructure.
Over the last few years, cities, including Chennai and Shimla, have faced acute water crisis.
Narendra Modi in his Mann Ki Baat address has highlighted issues like lack of rainwater harvesting.
He said only 8% rainwater is saved in the country.
Cities across the world are paying a heavy price due to worsening water risks.
Immediate action needs to be taken before it’s too late.