EEA standard re-use policy: unless otherwise indicated, re-use
of content on the EEA website for commercial or non-commercial
purposes is permitted free of charge, provided that the source
is acknowledged (http://www.eea.europa.eu/legal/copyright).
Copyright holder: European Environment Agency (EEA). Some 97.5%
of water on the Earth is salt water, leaving only 2.5% as fresh
water. Of this over two thirds is frozen in glaciers and polar
ice caps. The remaining unfrozen fresh water is found mainly as
groundwater, with only a small fraction present in rivers, lakes
or in the air. Water is a precious resource, use it responsibly
and don’t waste it! More green tips