Almost half of the United States' tap water is estimated to have one or more 'forever chemicals,' known as PFAS, according to a new study.
The U.S. Geological Survey tested tap water from 716 locations, including 269 private wells and 447 public supply sites, in all 50 states, Puerto Rico, the U.S. Virgin Islands and the District of Columbia. Data, which was collected from 2016 to 2021, found PFAS in at least 45% of the faucets, the study said.
"USGS scientists tested water collected directly from people's kitchen sinks across the nation, providing the most comprehensive study to date on PFAS in tap water from both private wells and public supplies," said USGS research hydrologist Kelly Smalling, the study's lead author, ."The study estimates that at least one type of PFAS – of those that were monitored – could be present in nearly half of the tap water in the U.S.
Urban areas and areas near potential PFAS sources, like industry or waste sites, are more likely to have higher levels of PFAS, the study found. Drinking water exposures may be more common in the Great Plains, Great Lakes, Eastern Seaboard and Central and Southern California, according to the study.
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