Do US Ambient Air Lead Levels Have a Significant Impact on Childhood Blood Lead Levels: Results of a National Study

<table>Cumulative percentage of children with BLL ≥ 10 <i>μ</i>g/dL by county, 2000–2007.</table>

Journal of Environmental and Public Health

Figure 2: Do US Ambient Air Lead Levels Have a Significant Impact on Childhood Blood Lead Levels: Results of a National Study 