Europe's surface waters where there are failures of Priority Substances with environmental quality standards set to protect human health

The map shows the percentage of European surface water bodies failing to achieve good chemical status in 2021, by River Basin District, for substances where the environmental quality standard is set to protect human health under the EU Water Framework Directive. The substances included in this map are benzo(a)pyrene, brominated diphenylethers, dioxins and dioxin-like compounds, fluoranthene, heptachlor and heptachlor epoxide. Most failures owe to the presence of brominated diphenylethers.