BusinessLine (Chennai)

50% of districts in India could face ‘severe’ water scarcity by 2050: Report

- Subramani Ra Mancombu Chennai GN RAO

India, considered one of the most water-stressed countries in the world, will likely face the most severe impacts of water shortage by 2050, a report on improving water e¦ciency in the country’s agricultur­e sector has said.

The country could face a 15 per cent decrease in per capita availabili­ty by then, with projection­s putting in a 30 per cent increase in demand, highlighti­ng the impending demand-supply gap. By 2050, 50 per cent of the districts in the country are expected to face severe water scarcity.

With India having nearly 17 per cent of the world’s population but only 4 per cent of the freshwater resources, twothirds of the people currently grapple with water scarcity, said the report, “Transformi­ng Crop Cultivatio­n: Advancing Water E¦ciency in Indian Agricultur­e.” DCM Shriram Foundation, supported by DCM Shriram, and Sattva Knowledge Institute, a knowledge platform for the impact ecosystem, came

India has nearly 17% of the world’s population and only 4% of the freshwater resources

out with the report a fortnight ago.

Pegging India’s current utilisable water resources at 1,123 billion cubic metres — roughly equivalent to 40 crores of Olympic-sized swimming pools — it said the country’s existing water sources face increasing pressure.

FALKENMARK INDEX

The pressure was mainly due to population growth and pollution, with key sectors such as agricultur­e further exacerbati­ng the crisis due to high water withdrawal­s. According to the Falkenmark Index, regions with less than 1,700 cubic metres of water per capita annually are considered to face water scarcity. Based on this index, nearly 76 per cent of the population in India is currently grappling with water scarcity, it said.

The impact of scarcity on groundwate­r resources has been the most critical. Agricultur­e worsens the water crisis, with 80-90 per cent of overall water withdrawal­s, the report said.

Water scarcity is primarily driven by excessive agricultur­al usage, which accounts for around 90 per cent of water withdrawal­s in India. “Being an agrarian country, irrigation by far is the largest user of India’s water reserve, with a whooping usage of 84 per cent of the total water reserve, followed by the domestic sector and the industrial sector and this trend is going to persist as per 2025 and 2050 projection­s,” it said.

The agricultur­e sector uses water extensivel­y for the cultivatio­n of certain crops, due to the natural characteri­stics of these intensivel­y grown crops and the ine¦cient water usage practices used to grow them. At least 90 per cent of India’s total crop production is reliant on three key crops: rice, sugarcane, and wheat.

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