Percentage of reported waterbodies with pesticides exceeding thresholds in a) rivers and b) groundwater in Europe weighted by water body size (rivers in km; groundwater in km²) per country

The figures show the percentage of waterbodies with exceedance of effect thresholds or quality standards, set by European or national regulatory standards, and weighted by waterbody size to reduce the impact of uneven data reporting. For rivers, exceedance was assessed against EU environmental quality standards, or national regulatory standards in the absence of those, reflecting the lowest ecotoxicologically-based effects threshold. For groundwater, the Groundwater Directive quality standard of 0.1µg/l was used to identify exceedance.