Cape Town, South Africa is rapidly approaching what has been called “Day Zero,” the moment when the diverse metropolitan area of nearly 4 million people runs out of clean drinking water. While Cape Town has taken drastic measures to conserve water, it is simply not enough to avoid the imminent crisis. And now, as government and residents prepare for the worst, it’s important to understand which other major cities around the world are also at risk. Lack of water is truly a global problem; one in four of the world’s largest cities is currently under “water stress,” with that number expected to rise due to climate change, human activity, and population growth.

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Cairo, Cairo water issues, Cairo water shortage

Water shortages have the potential to aggravate already unstable political and economic conditions, which is of particular concern in cities such as Cairo. Currently confronting violent extremism and managing ongoing political tension, Egypt is also rated by the World Health Organization as ranking high among middle-income countries on the number of deaths related to water pollution. This is tied to increasing pollution in the Nile River. The United Nations estimates that Egypt will suffer critical water shortages by 2025, exacerbating the potential for conflict. Similarly, São Paulo and Moscow are plagued by pollution due to poor public policy decisions. Fortunately, this means that the problem may be fixable, however entrenched it might be.

Related: Venice’s canals go dry following weeks without rain

Jakarta, Jakarta water issues, Jakarta water shortage

Coastal cities like Jakarta and Miami are facing unique water problems as both attempt to pull freshwater from aquifers. Due to lack of public access to piped water, residents of Jakarta have dug illegal wells, draining the underlying aquifer and actually causing the land to sink. As a result, about 40 percent of Jakarta now lies below sea level. While Miami may not be sinking, its freshwater reserves are suffering from seawater contamination as a result of rapid sea level rise and wetland habitat destruction. Even cities like London are facing a water-scarce future, with severe shortages expected by 2040. Governments can make the necessary policy changes to solve this problem, but they must act quickly. The water crisis is already upon us in many cities.

Via BBC News

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