Drinking Water Contains High Levels of Persistent Chemicals In China by Hannah Joy on January 12, 2021 at 12:19 PM Environmental Sciences Europe. The findings, from a team of researchers at Tsinghua University, Beijing, China, suggest that elimination of these chemicals from drinking water in affected cities and regions in China is urgently needed and that PFAS released from industries and other sources need better control and reduction. PFASs are a group of chemicals used to make coatings and products that resist heat, oil, stains, and grease, such as clothing, adhesives...