The Environmental Protection Agency (EPA) has set nationwide restrictions on six varieties of perfluoroalkyl and polyfluoroalkyl substances (PFAS) in drinking water, marking the first time such limits have been established.
PFAS, a group of chemicals, have been linked to increased risks of specific cancers, heart disease, elevated cholesterol levels, thyroid disorders, low birth weight, and reproductive problems, including reduced fertility.
According to the Department of Health and Human Services, most individuals in the United States have detectable levels of PFAS in their bloodstream.
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On Wednesday, the EPA revealed new regulations stating that levels of PFOA and PFOS—two PFAS types commonly found in nonstick or stain-resistant items like food packaging and firefighting foam—must not surpass 4 parts per trillion in public drinking water.
Additionally, three more PFAS chemicals—PFNA, PFHxS, and GenX—will be limited to 10 parts per trillion. PFNA and PFHxS are older versions of PFAS, while GenX chemicals are newer alternatives to PFOA.
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“One hundred million people will be healthier and safer because of this action,” EPA Administrator Michael Regan said Tuesday on a media call, referring to the number of people served by the water systems needing upgrades.
Starting from Wednesday, public water systems that currently do not monitor PFAS have a three-year window to begin doing so.
If PFAS is detected at levels exceeding the EPA limits, these systems will have an additional two years to acquire and implement new technologies to reduce PFAS levels in their drinking water.