This dataset includes the number of newly identified (incident) children with elevated blood lead levels (BLL), the number of children screened, and the percent of children screened with elevated BLLs. The ZIP code data is for 2015 and the census tract data is for 2013-2015. Cell counts with missing values are those with less than six observations, which was truncated to ensure confidentiality. Cells with values of zero were included. Trouble downloading or have questions about this City dataset? Visit the [OpenDataPhilly Discussion Group](http://www.phila.gov/data/discuss/)