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Box 4.2 Population concentration and growth as prominent drivers of higher water demand offsetting increases in water supply in Istanbul

Sources: (van Leeuwen and Sjerps, 2016; Altinbilek, 2006)

Istanbul is the largest urban agglomeration in EEA 38 and it is classified as a megacity (i.e. a city with a population over 10 million people). Istanbul gathers a population of more than 15 000 000 million inhabitants. It shows a total population increase of 36 % in the last decade (1.7 % annual average growth).

Although not a “naturally dry” area, water scarcity is a local issue due to population concentration and increase over time. Despite the enormous efforts to increase water supply, the projected future urbanisation and population growth, together with climate change, will increase water demand further.

 

Figure 4.4  Water supply and demand in Istanbul, 1990-2040

 

Source: (Altinbilek, 2006)

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