A new study finds that hundreds of young children in the Washington D.C. area experienced potentially damaging amounts of lead in their blood when lead levels were rising in the city’s tap water.
In some neighborhoods, the number of toddlers and infants with blood-lead concentrations that can cause irreversible IQ loss and developmental delays more than doubled after lead began leaching into the city’s drinking water in 2001, according to the findings to be published in Environmental Science and Technology journal.