World Chlorothalonil detected in Evian mineral water - rts.ch

Chlorothalonil detected in Evian mineral water – rts.ch

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Researchers from Eawag have found residues of chlorothalonil, a pesticide banned in Europe and Switzerland since early 2020, in Evian mineral water. Although clearly below legal limits, this pollution is of concern to politicians.

Experts from the Federal Institute for Water Science and Technology (Eawag) have measured a concentration of six nanograms of chlorothalonil per liter of Evian water, an amount that does not pose a health hazard. Announced Sunday by the Sonntagszeintung, the news reacted to certain political figures on Monday morning, in particular elected environmentalists on social networks.

For the president of the Vaudois Greens Alberto Mocchi, questioned in the 12:30 pm of the RTS, this discovery is one more argument against bottles of mineral water: “It shows that drinking bottled water thinking that it will be better for his health is a decoy, “reacted the ecologist, who adds that this water is transported by truck for hundreds or even thousands of kilometers in plastic containers which are not always easy to recycle.

Also in tap water

However, the problem of pollutant residues also affects running water. Since the beginning of the year, numerous contaminated sources have been detected, notably in the cantons of Vaud, Friborg and Bern.

>> Read about it: Presence of chlorothalonil in the waters of several Friborg districts

For Alberto Mocchi, also a municipal in Daillens (VD), the cantons and the Confederation must support the municipalities to resolve the problem. “It is up to the public authorities to try to take all the necessary measures” to fight against this pollution, estimates the ecologist, who nevertheless puts into perspective the cases of contamination of the drinking water network: “In the communes where we found chlorothalonil is often in relatively small amounts. “

Problem taken seriously

The problem is taken seriously by the authorities. As proof, this morning again, the city of Lausanne announced a request for a credit of 700,000 francs to conduct decontamination tests on its polluted sources (read framed).

Virginie Gerhard / vic

Lausanne wants to decontaminate its water

The City of Lausanne wants to recover its water contaminated with chlorothalonil. It wishes to study the feasibility of eliminating this fungicide on its facilities. For the Lausanne Water Service, the decommissioning of resources contaminated with chlorothalonil and its metabolites corresponds to 5% of the volumes distributed, or approximately 2 ‘000’000 cubic meters per year, said the Vaud capital on Monday. To recover these missing resources, the Lausanne authorities want to test several techniques: membrane filtration of the reverse osmosis type at low pressure, adsorption on activated carbon and oxidation by ozone. In order to carry out these tests, the municipality requested a framework loan of 700,000 francs to the municipal council. The goal is to have results within 18 months.

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