New Delhi : India’s national Capital Delhi and financial capital Mumbai are expected to lead a growing list of cities that would witness the maximum demand for water by 2025.
The Mckinsey Global Institute (MGI) has said that nearly 80 billion cubic meter increase in municipal water demand is expected in the world cities by 2025. The two Indian mega cities top the list of 20 countries that would experience the maximum demand.
A report by MGI stated that India, second only to China in population, will account for 15.8 per cent of the municipal water demand growth by 2025. And, three other leading Indian cities — Kolkata, Pune and Hyderabad — would also be among the top 20 in terms of water demand. The three would be ranked 7th, 12th and 16th respectively in the list that MGI drew up.
The prognosis by MGI spells trouble for Indian administrators, considering that both Mumbai and Delhi are witnessing growing water shortages. Civic authorities in both cities are struggling to meet the growing demand and several measures are being taken to bring down the demand-supply gap.
McKinsey said the expected demand for water by 2025 will be 40 per cent more than current urban global levels. Or, it would be least 20 times what New York consumes today.
So, the annual demand for municipal water is likely to increase from the current level of 190-odd billion cubic meters per year to about 270 billion cubic meters per year.
Meeting drinking, industrial and municipal demand as more people move to cities will require investments in water supplies and sewage treatment of about $480 billion by 2025, with $200 billion of that from emerging markets, McKinsey said.
Shanghai, Guangzhou, Beijing, Buenos Aires, Khartoum, Dhaka and Istanbul are among the top 10 cities that are likely to witness significant water demand.
Most of the demand growth would come due to rise in population and incomes in these cities.
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