by Public Employees for Environmental Responsibility, Childrens Health Defense:
New research shows disturbingly high levels of per- and polyfluoroalkyl chemicals, or PFAS, in widely used pesticides. When the pesticides are sprayed on plants, the chemicals enter the food supply through contaminated soils.
New research has documented disturbingly high levels of per- and polyfluoroalkyl substances (PFAS) in widely used pesticides.
These findings contradict previous statements by the U.S. Environmental Protection Agency (EPA) that PFAS are not used in registered pesticide products and has prompted Public Employees for Environmental Responsibility (PEER) to urge that EPA act immediately to ban the use of any pesticide containing PFAS.
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Published this week in the Journal of Hazardous Materials Letters the study, “Targeted Analysis and Total Oxidizable Precursor Assay of Several Pesticides for PFAS,” found:
- PFOS (one of the two legacy PFAS that is no longer manufactured in the United States) in 6 out of 10 tested insecticides at incredibly high levels, ranging from 3,920,000 to 19,200,000 parts per trillion (ppt). By contrast, this June EPA updated its Health Advisory for PFOS to 0.02 ppt.
- These PFAS are being taken up into the roots and shoots of plants, which means that they are entering our food supply through contaminated soils. Given that PFAS are “forever chemicals,” this contamination will last long after PFAS is removed from pesticides.
- A non-targeted PFAS analysis indicates that there are far more additional unknown PFAS in 7 out of 10 tested insecticides.
“If the intent was to spread PFAS contamination across the globe there would be few more effective methods than lacing pesticides with PFAS,” stated PEER Science Policy Director Kyla Bennett, a scientist and attorney formerly with EPA, noting that one of the pesticides containing PFAS is malathion, one of the most commonly applied insecticides in the world.
“These findings point to an appalling regulatory breakdown by EPA.”
On Sept. 1, EPA moved to remove 12 PFAS from its approved list of inert ingredients for pesticides. Its announcement stated that “these PFAS are no longer used in any registered pesticide products … ” However, this new study demonstrates that the PFAS problem in pesticides goes far beyond the inert ingredients.
This contamination does not spring from contaminated barrels but from the ingredients of the pesticides themselves, possibly added as dispersants to aid in the even spreading of the agents on plant surfaces.
“This research has alarming implications that demand immediate regulatory action: EPA must test all pesticides, and immediately ban the use of pesticides that contain PFAS,” added Bennett, arguing that EPA can no longer rely on voluntary manufacturer testing.
“The level of absorption by plants suggests that a person could absorb a lifetime dose of PFAS from eating one salad made with produce treated with these pesticides.”
Moreover, the study’s detection of unknown PFAS suggests that many of the PFAS being found fall outside the very narrow definition that EPA is developing for regulatory purposes.
PEER has been urging EPA to address all PFAS, as a category, rather than continuing its present chemical-by-chemical approach for the hundreds of PFAS currently in use and the unknown number of these chemicals in development.
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