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* [http://www.marcsteinmetz.com/pages/wasser/ewasser_minis.html Water supply in Germany (picture story)] „GEO“ 2/2000
* [http://www.spectrum.ieee.org/apr08/6182 IEEE Spectrum: How Much Water Does It Take to Make Electricity?] -- Natural gas requires the least water to produce energy, biofuels the most, according to a new study
* [httphttps://wwwweb.archive.org/web/20090212055152/http://waterplanning.org.au/ Water Planning Tools] -- an Australian research initiative which develops and pilots tools for improving water planning, management and security
* [https://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&ctype=l&strail=false&nselm=h&met_y=sh_h2o_safe_zs&hl=en&dl=en Google - public data] "Improved water source (percent of population with access)"
* [https://www.google.com/publicdata/explore?ds=d5bncppjof8f9_&ctype=l&strail=false&nselm=h&met_y=er_h2o_intr_pc&hl=en&dl=en Google - public data] "Renewable internal freshwater resources per capita (cubic meters)"

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