What levels of perchlorate were detected in infant formula and how do they compare to the RfD?
According to the CDC study, the average perchlorate concentration of milk-based powder infant formula studied was 1.72 ppb. To put this into perspective, this level is more than eight times lower than the level determined by the EPA to be safe in drinking water. Using the estimates for exposure described in the CDC study, infants who consume formula containing these average levels and prepared with perchlorate-free water would not exceed the RfD.
