For the safety of young children, certain areas of the Josefwiese in Zurich are covered with wood chips and will soon be decontaminated. Image: City of Zurich
For the safety of young children, certain areas of the Josefwiese in Zurich are covered with wood chips and will soon be decontaminated. Image: City of Zurich Researchers have analyzed soil samples from the Josefwiese on behalf of the city of Zurich and detected elevated dioxin levels. Although the levels are still well below the decontamination limit, the city has decided to clean up the site to protect the population, especially children who play there. In 2022, the Canton of Zurich tested the surroundings of waste incineration plants for dioxins and published the results in November. The sample from the Josefwiese was within the range of the legal test value of 20 nanograms of toxicity equivalent per kilogram (ng TEQ/kg). Based on this result, City Councilor Simone Brander, head of the Department of Civil Engineering and Waste Management, commissioned an in-depth investigation. In cooperation with the cantonal Office for Soil Protection, soil samples were taken from nine unpaved areas of the Josefwiese and analyzed at Empa.
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