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This week EPA’s Science Advisory Board issued its final
report on EPA’s assessment of the risks associated with
drinking water containing two of the hundreds of forever chemicals
collectively known as PFAS. Unless you have a PhD in toxicology
most of that report will be over your head (as it was mine).
The bottom line of the report is that the Science Advisory Board
believes there is strong evidence that PFAS cause adverse health
effects and, on that basis, very stringent limits on the amounts of
at least two of those PFAS in our drinking water are
Some of you may recall that in June, EPA issued drinking water
health advisory levels for these two PFAS of 0.004 parts per
trillion (ppt) for PFOA and 0.02 ppt for PFOS. Those levels were
several orders of magnitude stricter than the 70 ppt level that the
Obama administration set for combined levels of the PFAS pair.
Based on what the Science Advisory Board has told EPA I expect
that the enforceable drinking water standards EPA intends to set
later this year may not be zero but they will challenge the limits
As with most consequential Government actions, litigation over
the standards is likely whatever they are but expect a lot of water
treatment upgrades in the meantime and continued fear about the
PFAS already consumed.
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