Vox – “The city of Flint, Michigan, is in the midst of a terrible and rightly shocking lead poisoning crisis. The number of kids testing positive for elevated lead levels in their bloodstreams has doubled in the past few years, after the city switched to a new, cheaper water source. This is an extreme case, but the problem of lead exposure among children is not a local Flint story. If you look at public health data, you begin to realize two things. The first is that it’s actually really hard to get good data on which kids do and don’t experience lead exposure, and which parents should worry about the issue. Second: The data that is available shows that lead exposure is a pervasive issue in the United States. In some places outside of Flint, more than half of children test positive for lead poisoning…”

• See also CDC’s data – Childhood Lead Poisoning Data, Statistics, and Surveillance