U.S. EPA warns of "forever chemicals" in fertilizer


By Xia Lin
  • World
  • Wednesday, 15 Jan 2025

NEW YORK, Jan. 14 (Xinhua) -- For the first time, the U.S. Environmental Protection Agency (EPA) on Tuesday warned that "forever chemicals" present in sewage sludge that is used as fertilizer can pose human health risks.

In an extensive study the agency said that, while the general food supply isn't threatened, the risk from contaminated fertilizer could in some cases exceed the EPA's safety thresholds "sometimes by several orders of magnitude."

A growing body of research has shown that the sludge can be contaminated with manmade chemicals known as per- and polyfluoroalkyl substances, or PFAS, which are used widely in everyday items like nonstick cookware and stain-resistant carpets.

"The chemicals, which are linked to a range of illnesses including an increased risk of cancer, do not break down in the environment, and, when tainted sludge is used as fertilizer on farmland, it can contaminate the soil, groundwater, crops and livestock," said The New York Times in its report about the warning.

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