Figure 5: Nitrate - Development of the exceedances of the threshold value 1997-2008; Number of groundwater monitoring stations which exceed the threshold value by their annual mean values in proportion to the total number of monitoring stations available in bodies of shallow groundwater per year, (ENVIRONMENT AGENCY 2010, OWN EVALUATIONS)

Figure 5: Nitrate - Development of the exceedances of the threshold value 1997-2008; Number of groundwater monitoring stations which exceed the threshold value by their annual mean values in proportion to the total number of monitoring stations available in bodies of shallow groundwater per year, (ENVIRONMENT AGENCY 2010, OWN EVALUATIONS)