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In Europe, the presence of toxic chemicals has been considered a localized problem affecting only a few bodies of water but a new paper says there are large scale ecological risks for several thousands of European aquatic systems. The culprit: toxic chemicals. They say that chemical toxicity represents an ecological threat to almost half of all European bodies of water, and in approximately 15% of cases, the biota in freshwater systems may even be subject to acute mortality. The Water Framework Directive (WFD) by the EU is unlikely to be met due to the high levels of toxicants in the water bodies, say the authors from the Institute for Environmental Sciences Landau, the Helmholtz Centre for Environmental Research, University of Lorraine and the Swiss Federal Institute of Aquatic Science and Technology. One of the reasons: current measures for the improvement of water quality do not account for the effects of toxic chemicals. They write that the ecological risks pose ....