"In 2022, the canton of Zurich examined the surroundings of waste incineration plants (WIP) for dioxins and published the results in November. No massive or large-scale contamination like in Lausanne was found in the canton of Zurich. However, the random sample from the Josefwiese was within the range of the legal test value of 20 nanograms of toxicity equivalent per kilogram (ng TEQ/kg)."
https://www.stadt-zuerich.ch/ted/de/index/departement/medien...
"In 2022, the canton of Zurich examined the surroundings of waste incineration plants (WIP) for dioxins and published the results in November. No massive or large-scale contamination like in Lausanne was found in the canton of Zurich. However, the random sample from the Josefwiese was within the range of the legal test value of 20 nanograms of toxicity equivalent per kilogram (ng TEQ/kg)."