Water: Dossiers

Chlorothalonil metabolites in groundwater: first nationwide assessment of pollution in Switzerland

12.05.2020 – In December 2019, the Federal Food Safety and Veterinary Office (FSVO) classified all degradation products (metabolites) of chlorothalonil, a plant protection product substance, as relevant for drinking water. A maximum level of 0.1 microgram per litre applies to these substances in drinking water and this limit is also valid for groundwater in this case. The Federal Office for the Environment (FOEN) has now carried out a first nationwide assessment of pollution in groundwater. This reveals that the concentration of several chlorothalonil metabolites exceed this limit in groundwater in large areas of the Swiss Plateau, resulting in significant contamination.

Video: "Swiss water bodies – all clear?"

05.06.2018 - Dive into the FOEN’s new video and experience Switzerland’s water bodies like you’ve never seen them before. Take a seat next to pilot Nino G from planet Nuxxo and accompany him on an adventure through Switzerland’s riverine landscapes.

Last modification 04.06.2018

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