Where Are the World’s Most Water-Stressed Cities?

Last year, California’s cities were required to cut their water usage by up to 35%. Photograph: Lucy Nicholson/Reuters

More than 2.5 billion people don’t have access to basic levels of fresh water for at least one month each year – a situation growing ever more critical as urban populations expand rapidly

theguardian.com - by Katherine Purvis - July 29, 2016

Water stress – where the human or ecological demand for water is not met – is caused by a variety of factors. . . .

. . . As the urban population grows, so too does the number of people living in settlements that are not connected to a formal piped water supply. . . .

. . . As freshwater supplies dry up, many cities are engaged in a race to the bottom as they turn to groundwater – with some underground aquifers now so overexploited that water is extracted much faster than it is recharged.

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