They are endocrine disruptors. The levels are not subclinical. > Hormones work at very small doses (part per billion ranges). Endocrine disruption can thereby

They are endocrine disruptors. The levels are not subclinical. > Hormones work at very small doses (part per billion ranges). Endocrine disruption can thereby also occur from low-dose exposure to exogenous hormones or hormonally active chemicals such as bisphenol A. [...] Furthermore, since endogenous hormones are already present in the body in biologically active concentrations, additional exposure to relatively small amounts of exogenous hormonally active substances can disrupt the proper functioning of the body's endocrine system. Thus, an endocrine disruptor can elicit adverse effects at much lower doses than a toxicity, acting through a different mechanism. https://en.wikipedia.org/wiki/Endocrine_disruptor https://en.wikipedia.org/wiki/Endocrine_disruptor > Between 2016 and 2022, the agency worked off an advisory health limit of 70 parts per trillion (ppt) for PFOS and PFOA, two compounds commonly produced and used for decades. Last year, after science showed virtually no level of exposure to drinking water is safe, the EPA set non-enforceable “advisory health limits” of 0.02 ppt and 0.004 ppt for PFOA and PFOS, respectively. > The new legal limits for PFOS and PFOA is 4 ppt each, levels that science shows are still dangerous to drink. Public health advocates say the discrepancy is likely the result of industry pressure on the EPA and an inability of PFAS tests that regulators use to check water for the chemicals at levels as low as 0.02 ppt. https://www.earthisland.org/journal/index.php/articles/entry/epa-sets-limits-on-6-toxic-pfas-or-forever-chemicals-in-drinking-water https://www.earthisland.org/journal/index.php/articles/entry...