U.S. regulators said Wednesday they will do away with limits on certain types of toxic chemicals in U.S. drinking water, a move that critics warn could expose millions of Americans to dangerous contaminants.
The U.S. Environmental Protection Agency (EPA) said it intends to rescind limits set under President Joe Biden in April 2024 on four types of harmful per- and polyfluoroalkyl (PFAS) chemicals widely found in drinking water — perfluorononanoic acid (PFNA), perfluorohexane sulfonate (PFHxS), perfluorobutane sulfonate (PFBS) and GenX.
The EPA will keep the limits of 4 parts per trillion in drinking water for two other types of PFAS, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), the agency said in a statement.
But, in another move drawing criticism from health advocates, the agency said it will delay the deadline for drinking water systems to comply from 2029 to 2031.
“This is a public health betrayal, plain and simple,” said Melanie Benesh, vice president for government affairs at the nonprofit Environmental Working Group.
“Science is clear: PFAS are dangerous even in tiny amounts. The agency must protect all Americans, not just from two chemicals, but from the entire class of harmful PFAS.”
The four PFAS chemicals the EPA plans to roll back regulations for “are the ones currently in use because industry developed them to replace PFOA and PFOS, so they are the chemicals most likely to increase contamination in the future,” Betsy Southerland, a former EPA senior scientist and a former director in the agency’s Office of Water, said in a statement.
PFAS are types of chemicals that have long been used in a wide variety of products and industrial processes, but many have been linked to health problems that include certain cancers and immune system and reproductive harms.
Countries around the world have been pushing companies to eliminate the use of PFAS, known to be particularly dangerous, such as PFOS and PFOA, but the chemicals remain difficult to eradicate.
A recent study found residents of a Michigan community polluted with PFAS from a paper mill continue to have high levels of the chemicals in their blood, even though the mill closed down 25 years ago.
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