KWQC reports potentially hazardous industrial chemicals have been found in drinking water throughout the US, including the Iowa Quad Cities.

A study released Wednesday by Environmental Working Group (EWG), an environmental research and advocacy group, found PFAS (per- and polyfluoroalkyl substances) at more than 40 locations in 31 states, according to a PBS NewsHour report. Some kinds of PFAS chemicals are known as “forever chemicals” because the man-made substances, which are found in consumer products such as nonstick cookware and food packaging, virtually never biodegrade.

PFAS have been linked to some types of cancer, low birth weight in babies, and have been shown to cause liver damage.

The drinking water was sampled between May and December of last year and analyzed for PFAS by a third-party lab. The study shows two samples (taken in North Carolina and in the Iowa QCs) contained PFAS that exceeded Environmental Protection Agency standards.

While we know for sure that the drinking water in the Iowa QCs contains PFAS, it's unknown exactly which health side effects could result from consuming unfiltered tap water.