Published in the journal Nature Geoscience on April 8, the study revealed that higher concentrations of perfluoroalkyl substances (PFAS) were detected in drinking water in specific regions of the U.S.
PFAS, also known as "forever chemicals" due to their slow degradation, are a group of chemicals utilized in industrial processes and the production of consumer goods. The primary chemicals in this group are perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS). These chemicals can infiltrate human bodies through various means, including drinking water.
The study, conducted by researchers from the University of New South Wales (UNSW) in Sydney, analyzed a global dataset of 273 studies dating back to 2004. The data encompassed over 12,000 samples of surface water and more than 33,900 samples of groundwater.
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"We scoured every possible source for PFAS concentrations in water data, including scientific journals and governmental reports and websites," Denis O'Carroll, a UNSW engineering professor and senior author of the study, informed Fox News Digital. "We juxtaposed PFAS concentrations in these water samples with international regulations and compared the types of PFAS analyzed to what we discovered in consumer products."
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The study found that nearly 70% of the samples exceeded Canada’s minimum safety standards for PFAS (30 nanograms per liter), while 6% surpassed the European Union’s standard (100 ng per liter). In the U.S., PFAS "hot spots" were primarily located in the Midwest, New England, and the West Coast, although the chemicals were also detected in other regions across the country. Internationally, high levels of PFAS were found in Australia, Europe, and China.
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"To date, no one has examined the global extent of PFAS in our waters and compared it to international drinking water standards," O’Carroll stated. "Our study discovered that a significant fraction of sampled waters exceeded PFAS drinking water guidance values, with the extent of exceedance depending on the jurisdiction and PFAS source."
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Dr. Mark Fischer, regional medical director of International SOS, a health and security risk mitigation company based in London, highlighted that most Americans also have these chemicals in their blood. "Although the use of these chemicals has declined in recent years, they are difficult to break down, so they are still found in some food, water and consumer products, as well as within the soil and the environment," Fischer, who was not involved in the UNSW study, told Fox News Digital.
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According to the Centers for Disease Control and Prevention, most people in the U.S. have been exposed to these chemicals, likely through contaminated food or drinking water. Health risks associated with PFAS include cancers, elevated liver enzymes, lower birth weight, and higher cholesterol, Fischer noted. Other potential dangers include heart issues, plus immune and developmental damage, according to the Environmental Protection Agency (EPA).
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"PFAS contamination has been identified in drinking water in all 50 states, according to the Environmental Working Group," Fischer said. "That said, the levels of these chemicals vary throughout states and cities."
The study did have some limitations, the researchers acknowledged. "We have measured a much wider range of PFAS in consumer products than in our waters," said O’Carroll. "As such, we don’t really have a great idea of the range of PFAS in our waters."
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The data was also limited to what the researchers could find, he noted. "While we had data for over 45,000 water samples, even more data would be useful, especially for parts of the world where we had limited data."
The actual amount of PFAS in water could be higher than what the study results imply, O’Carroll added. "Current monitoring practices probably underestimate PFAS in the environment, given the limited suite of PFAS that are typically quantified but deemed of regulatory concern," he said.
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These are just one of the many types of chemicals that are used in daily life, O’Carroll noted. "As a society, we need to consider the chemicals we use and reduce our use of some," he advised. "Just because we can cheaply use a chemical doesn’t mean we should."
On April 10, the EPA finalized new limits on the amount of PFAS permitted in drinking water. The new standards could reduce exposure for 100 million people, potentially preventing thousands of deaths and tens of thousands of serious illnesses, the agency said in a news release. This is the "first-ever national, legally enforceable drinking water standard" to protect people from the health risks of PFAS, the agency stated.
The 66,000 public drinking water systems in the U.S. will have three years to reduce PFAS levels to meet the new standards, according to the release. The EPA also announced $1 billion in new funding, provided through the Bipartisan Infrastructure Law, to enable PFAS testing and treatment of public water systems and private wells.
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