IWA Publishing

Availability and Security of Water Services

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Courtesy of IWA Publishing

Water has become a crucial resource worldwide. Surface water and groundwater are the primary sources of water.  The impacts for the the availability of water were generated from work from a variety of sources (FCO 2010).  At present, approximately 1.5 billion people, out of a total world population of around 6 billion, live in major watersheds where average river runoff is less than 1000 m3/capita/year (a widely used threshold indicating potential exposure to water resources stresses)(FCO 2010).  By 2080, under a moderate population growth projection, approximately 35% of a larger world population-close to 3 billion people-could be living in water-stressed areas (FCO 2010).

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