Facts and Figures

90% of the 3 billion people to be added to the population by 2050 may be in regions already experiencing water stress and with no sustainable access to drinking water

  • More than 60% of the world’s population growth between 2008 and 2100 will be in sub-Saharan Africa (32%) and South Asia (30%). Together, these regions are expected to account for half of world population in 2100. 
  • An estimated 90% of the 3 billion people who are expected to be added to the population by 2050 will be in developing countries, many in regions that are already experiencing water stress and in areas where the current population does not have sustainable access to safe drinking water and adequate sanitation.
  • More than 5 billion people – 67% of the world population – may still not be connected to public sewerage systems in 2030.

Related themes: Water, Sanitation and Health; Human Settlements; State of the Resource

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