Rainwater across the entire planet is no longer safe, scientists say. Contamination from toxic 'forever chemicalsâ is ubiquitous.
Rnvironmental research led by scientists at Stockholm University reveals that rainwater across every region of Earth now contains toxic per- and polyfluoroalkyl substances (PFAS) at levels exceeding safety limits set by major health agencies.
Known as 'forever chemicals' due to their extreme resistance to natural degradation, these synthetic compounds have circulated through the global water cycle, contaminating even the most pristine and isolated regions, including Antarctica and the Tibetan Plateau.
The widespread dispersal means natural precipitation everywhere on the planet is no longer safe to consume without specialized purification.
PFAS chemicals have been widely manufactured for decades in products like nonstick cookware, waterproof gear, and firefighting foams, leaching into waterways and cycling into the atmosphere via ocean spray.
Exposure to these persistent pollutants is linked to severe long-term health risks, including various forms of cancer, compromised immune systems, decreased fertility, and developmental delays in children.
As global regulatory bodies scramble to tighten drinking water standards, environmental health experts warn that humanity has crossed a critical boundary, leaving atmospheric contamination virtually impossible to reverse with current technologies.
source: Cousins, I. T., Johansson, J. H., Salter, M. E., Sha, B., & Scheringer, M. (2022). Outside the safe operating space of a new planetary boundary for per- and polyfluoroalkyl substances (PFAS). Environmental Science & Technology, 56(16), 11172-11179.