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Channel catfish had highest PFAS count in Illinois rivers

A mature channel catfish pulled from a river in Illinois by the Great Rivers Field Station. The popular fish was one of nine species put in focus by the University of Illinois during a study of four northern Illinois rivers. (Photo by Julia Hampton)

Scientists from the University of Illinois tested nine fish species from four northern Illinois rivers for contamination with per- or polyfluoroalkyl substances –  synthetic chemicals found in many industrial and commercial products.
They found fish contaminated with PFAS in every one of their 15 test sites. Elevated levels of PFOS, one type of PFAS compound, were found in nearly all fish tested. The researchers focused on fish in northern Illinois rivers because they are close to urban and industrial areas.

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