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Which method of avoiding water shortage is more valuable: developing new sources of water or conservation of it?

More than one-third of all worlds will likely be facing very serious water shortages by 2050, according to a new report released by the Natural Resources Defense Council. Up to date, approximately 700 million people in 43 countries suffer from water shortages. High rates of population growth, poor management, environmental pollution, low water use efficiency lead to the depletion of water resources. The United Nation Secretary-General Ban Gi Moon noted that in the future water shortages will pose a threat to economic and social development and environmental sustainability. He believes that in order to overcome this problem is important to the integrated management of water resources and international cooperation, as many rivers and aquifers are the common heritage of countries.

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  • May 10 2013: Before I give my opinion, did you know that large buildings (Malls, airports etc.) conserve water by collecting condensate water from their Air Handlers or AC Units. In some cases, millions of gallons per year are saved. For example in the Middle East, fresh (potable) water is obtained by desalinating sea water, a highly energy consuming process. On the other hand, their airports converse condensate water.
    Now, why there's water shortages, over-consumption and aquifers not being replenished. Mostly due to climate shifts and global warming, there's decreased rain near the aquifers.
    Solution: Conserve and reuse more. The condensate recovery I've mentioned before is only implemented in regions where water is "expensive enough", so that they recover the installation costs. While reusing water from lavatories, dish washers etc. for irrigation and such, active conservation will result in water being used efficiently.

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