Under the Water Framework Directive, the chemical status of groundwaters is assessed based on the presence of nitrates and pesticides. It is also assessed for substances that put the groundwater body at risk. Threshold values are used to assess status. If the threshold value for substances is exceeded, the water body fails to meet good chemical status.
The table shows the pollutant, the number of countries reporting that substance and the area of water bodies failing good chemical status for that substance (km2). The higher the numbers, the more widespread the substance is across Europe.
It is possible to filter by 2nd or 3rd RBMP, EU-27 or country, and by pollutant name.