Global Cities That Will See Highest Water Demand by 2025
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Global Cities That Will See Highest Water Demand by 2025

By SiliconIndia   |   Thursday, 30 August 2012, 11:56 Hrs   |    4 Comments
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Bangalore: Water is an essential commodity for survival. Currently, millions of people around the world are facing a great challenge to access safe water. The demand for municipal water is expected to rise by nearly 80 billion cubic meters in the world’s cities by 2025, says a report by McKinsey & Company. These global cities will require an investment of about $480 billion in order to serve the rise in demand. The cities that will see highest water demand are:



Mumbai, India:



Mumbai is expected to lead a growing list of cities that will witness the maximum demand for water by 2025. Mumbai leads the list of the 20 global cities in terms of municipal water demand in the next 13 years. The city is already facing water crisis. As per official estimates, Mumbai needs around 3,450 million litres of water a day. The Brihanmumbai Municipal Corp (BMC), Mumbai's civic body supplies 3,087 million litres to households. The lakes together must have at least 12.54 million litres every year. The current collective stock is approximately 2.12 million litres as against 4.24 million litres a year ago. The city may experience the biggest increase in demand for water as per the report.



New Delhi, India:



Delhi takes the second position on the list of Municipal water demand. Delhi is also in the grip of water crisis. It is said that the demand for water will rise as urbanization will grow fast. The city was reeling under shortage of water in June this year. As per experts, Delhi enjoys an average of 229 litres per capita per day (lpcd) against a standard of 135 lpcd, which is not really short of water. However, according to Delhi Jal Board estimates, Delhi loses around 30 percent of the water to leakages and other transmission losses.



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Reader's comments(4)
1: Good post.


Researchers define water stress and water scarcity in different ways. For example, some have presented maps showing the physical existence of water in nature to show nations with lower or higher volumes of water available for use. Others have related water availability to population. A popular approach has been to rank countries according to the amount of annual water resources available per person. For example, according to the Falkenmark Water Stress Indicator, a country or region is said to experience "water stress" when annual water supplies drop below 1,700 cubic metres per person per year. At levels between 1,700 and 1,000 cubic metres per person per year, periodic or limited water shortages can be expected. When water supplies drop below 1,000 cubic metres per person per year, the country faces "water scarcity". The Unitied Nations' FAO states that by 2025, 1.9 billion people will be living in countries or regions with absolute water scarcity, and two-thirds of the world population could be under stress conditions. Water stress is considered "set to become a permanent feature of British life". The World Bank adds that climate change could profoundly alter future patterns of both water availability and use,thereby increasing levels of water stress and insecurity, both at the global scale and in sectors that depend on water.
Another measurement, calculated as part of a wider assessment of water management in 2007, aimed to relate water availability to how the resource was actually used. It therefore divided water scarcity into ‘physical’ and ‘economic’. Physical water scarcity is where there is not enough water to meet all demands, including that needed for ecosystems to function effectively. Arid regions frequently suffer from physical water scarcity. It also occurs where water seems abundant but where resources are over-committed, such as when there is overdevelopment of hydraulic infrastructure for irrigation. Symptoms of physical water scarcity include environmental degradation and declining groundwater.
Economic water scarcity, meanwhile, is caused by a lack of investment in water or insufficient human capacity to satisfy the demand for water. Symptoms of economic water scarcity include a lack of infrastructure, with people often having to fetch water from rivers for domestic and agricultural uses. Large parts of Africa suffer from economic water scarcity; developing water infrastructure there could therefore help to reduce poverty. Critical conditions often arise for economically poor and politically weak communities living in already dry environments. Some 2.8 billion people currently live in water-scarce areas, as defined by this method.
Dr.A.Jagadeesh Nellore(AP),India
Posted by:Anumakonda - 02 Sep, 2012
2: Where is Bengaluru?
Posted by:ajay - 31 Aug, 2012
3:
Bengaluru is a sucking city fit for nothing constructive apart frm slavery IT-service based companies. Tis too wil vanis asap coz of stiff competition frm world class cities lik Chennai, Pune, Noida.
Its ppl r vry jealous thru which they deny water to all their neighbours lik TN, AP, Maharashtra, Kerala, etc.
James Freddy Replied to: ajay - 03 Sep, 2012
4: Indian cities had to make it to the list
Posted by:ram - 30 Aug, 2012
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