Study Reveals High Levels of ‘Forever Chemicals’ in US Hot Spots

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USA: A recent study published in the journal Nature Geoscience has uncovered significant concentrations of per- and polyfluoroalkyl substances (PFAS), also known as “forever chemicals,” in certain regions of the United States and other countries.

PFAS Contamination Hot Spots

The study, based on an analysis of over 12,000 surface water and 33,900 groundwater samples worldwide, indicates that many areas exceed recommended levels of PFAS. Professor Denis O’Carroll, a study author from the University of New South Wales, noted that a “substantial fraction” of locations contain concentrations of PFAS higher than deemed safe.

PFAS are commonly used in various household products, including nonstick cookware, food packaging, and dental floss. However, the U.S. Agency for Toxic Substances and Disease Registry has linked PFAS exposure to health issues such as increased cholesterol, reproductive problems, and certain cancers.

Distribution and Impact

The study’s map illustrates PFAS hot spots across the U.S., particularly in New England, the Midwest, and the West Coast, as well as in regions of Europe, China, and Australia. Maaike van Gerwen, director of research at the Icahn School of Medicine at Mount Sinai, highlighted the persistence of PFAS in the environment due to their slow degradation rate.

In response to these findings, the Biden administration recently announced the first enforceable drinking water standard for PFAS in the U.S. The Environmental Protection Agency (EPA) will implement limits of 4 parts per trillion for certain PFAS compounds, aiming to address long-standing concerns about contaminated drinking water.

While the study provides valuable insights into PFAS contamination, researchers caution that the extent of contamination may vary based on sampling practices. Continued research and regulatory measures are essential to mitigate the health and environmental risks associated with PFAS exposure.