"...In 2016, the U.S. Environmental Protection Agency (EPA) adopted a voluntary drinking water guideline of 70 ppt of PFOA and PFOS, individually and in total. To put this in perspective, one part-per-trillion (ppt) is approximately a one drop in an Olympic-sized swimming pool.
...The epidemiological studies on the human health effects of PFAS exposure levels and potency are inconsistent, and may have substantial methodological limitations that make it difficult to determine whether there are true associations. This is particularly true of the short-chain compounds...
Fast facts
- ...Low levels of PFAS are commonly found in the blood of people and animals all over the world and are present at low levels in a variety of products.
- The EPA concluded there is “suggestive” evidence of carcinogenicity of PFOS and PFOA in humans, among other concerns, based largely on findings in high-dose animal studies. This was a hazard-based conclusion, irrespective of dose. The CDC has stated the health effects at low environmental levels of PFAS are “uncertain” and that “more research is needed” to assess the human health effects of exposure to PFAS.”
- In 2017, the International Agency for Research on Cancer (IARC), a division of the World Health Organization (WHO), concluded PFOA is “possibly carcinogenic to humans.”...Read all.
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