postnatal exposure to chlorpyrifos may cause persistent effects into adulthood along with epidemiology studies which have evaluated prenatal chlorpyrifos exposure in mother-infant pairs and reported associations with neur­o­de­vel­op­ment outcomes in infants and children. . (8) Chlorpyrifos has long been of concern to EPA. Residential uses of chlorpyrifos ended in 2000 after EPA found unsafe exposures to children. EPA also discontinued use of chlorpyrifos on tomatoes and restricted its use on apples and grapes in 2000, and obtained no-spray buffers around schools, homes, playfields, day cares, hospitals, and other public places, ranging from 10 to 100 feet. In 2015, EPA proposed to ban all chlorpyrifos food tolerances, based on unsafe drinking water contamination, which would end use of chlorpyrifos on food in the United States. After updating the risk assessment for chlorpyrifos in November 2016 to protect against prenatal exposures associated with brain impacts, EPA found that expected residues from use on food crops exceeded the safety standard, and additionally the majority of estimated drinking water exposures from currently allowed uses of chlorpyrifos also exceeded acceptable levels, reinforcing the need to revoke all food tolerances for the pesticide. (9) Chlorpyrifos threatens the healthy development of children. Children experience greater exposure to chlorpyrifos and other pesticides because, relative to adults, they eat and drink more proportional to their body weight. A growing body of evidence shows that prenatal exposure to very low levels of chlorpyrifos can lead to lasting and possibly permanent neurological impairments. In November 2016, EPA released a revised human health risk assessment for chlorpyrifos that confirmed that there are no acceptable uses for the pesticide, all food uses exceed acceptable levels, with children ages 1 to 2 exposed to levels of chlorpyrifos that are 140 times what the EPA considers acceptable. (10) Chlorpyrifos threatens agricultural workers. Farm workers are