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Uploaded on Saturday 25 Feb 2012 by GRID-Arendal

Trends in groundwater nitrate concentrations

Year: 2006
From collection: Water stress in Europe
Author: Philippe Rekacewicz, UNEP/GRID-Arendal
The graph shows the development of Nitrate concentration in groundwater from 1980 to 1995 in France, Britain and Denmark combined. Nitrate is a naturally occurring compound and is normal in small amounts, but excess amounts can pollute supplies of groundwater. Nitrate travels through soil contaminated by fertilizers, livestock waste and septic systems, carried by rain or irrigation water into groundwater supplies.
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