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Share of monitoring sites exceeding the quality standard for nitrate in groundwater

A graph shows the proportion of groundwater sampling sites where nitrate measurements for the years 2008 to 2024 were above 25 and 50 milligrams per litre. In the period covered, neither sub-indicator has shown any significant change.
Source: German Environment Agency / Länder Initiative on Core Indicators 2025 / Data from the German Working Group on water issues of the Federal States and the Federal Government
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Short link: www.uba.de/m47915en