Editing Resource depletion (section)

=== Groundwater as a non-renewable resource ===
Groundwater is considered to be a non-renewable resource because less than six percent of the water around the world is replenished and renewed on a human timescale of 50 years.<ref>{{Cite web|url=https://www.cbc.ca/news/technology/groundwater-study-1.3318137|title=Most groundwater is effectively a non-renewable resource, study finds|access-date=2020-03-19|archive-date=2019-09-29|archive-url=https://web.archive.org/web/20190929020604/https://www.cbc.ca/news/technology/groundwater-study-1.3318137|url-status=live}}</ref> People are already using non-renewable water that is thousands of years old, in areas like Egypt they are using water that may have been renewed a million years ago which is not renewable on human timescales.<ref name=":2" /> Of the groundwater used for agriculture, 16–33% is non-renewable.<ref name=":7">{{Cite journal|last1=Wada|first1=Yoshihide|last2=Beek|first2=Ludovicus P. H. van|last3=Kempen|first3=Cheryl M. van|last4=Reckman|first4=Josef W. T. M.|last5=Vasak|first5=Slavek|last6=Bierkens|first6=Marc F. P.|date=2010|title=Global depletion of groundwater resources|journal=Geophysical Research Letters|language=en|volume=37|issue=20|pages=n/a|doi=10.1029/2010GL044571|bibcode=2010GeoRL..3720402W|issn=1944-8007|url=https://dspace.library.uu.nl/bitstream/1874/209122/1/2010GL044571.pdf|hdl=1874/209122|s2cid=42843631|access-date=2019-09-02|archive-date=2024-04-22|archive-url=https://web.archive.org/web/20240422061543/https://dspace.library.uu.nl/bitstream/1874/209122/1/2010GL044571.pdf|url-status=live}}</ref> It is estimated that since the 1960s groundwater extraction has more than doubled, which has increased groundwater depletion.<ref name=":7" /> Due to this increase in depletion, in some of the most depleted areas use of groundwater for irrigation has become impossible or cost prohibitive.<ref name=":8">{{Cite journal|last1=Konikow|first1=Leonard F.|last2=Kendy|first2=Eloise|date=2005-03-01|title=Groundwater depletion: A global problem|journal=Hydrogeology Journal|language=en|volume=13|issue=1|pages=317–320|doi=10.1007/s10040-004-0411-8|bibcode=2005HydJ...13..317K|s2cid=21715061|issn=1435-0157}}</ref>