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Detailed explanation-1: -Twenty one cities in India including Delhi, Bengaluru, Chennai and Hyderabad-will run out of groundwater by 2020, affecting around 100 million people, claims a report by NITI Ayog. The report also says that 40 per cent of India’s population will have no access to drinking water by 2030.

Detailed explanation-2: -As we said, 21 Indian cities – including Delhi, Bengaluru, Chennai and Hyderabad – will run out of groundwater by 2020, affecting 100 million people; 40 percent of India’s population will have no access to drinking water by 2030, the report said.

Detailed explanation-3: -About 18 percent of households in the capital city, Delhi, do not have piped water supply. There is illegal construction near reservoirs, over extraction of groundwater, pollution in water bodies and wastage of residential water supply are some of the main reasons because of that Delhi is facing the water crisis.

Detailed explanation-4: -By 2030, it’s predicted that 40% of the population will have no access to drinking water-and 21 cities, including Chennai and New Delhi, will run out of groundwater, impacting 100 million people, according to NITI Aayog.

Detailed explanation-5: -Uttar Pradesh and Madhya Pradesh-the two largest states in terms of area and population-are among around a dozen states where the magnitude of water problem is not just large, but also complex. The other states facing the challenge include Karnataka, Bihar, Haryana, Gujarat and Maharashtra.