In the 49507 ZIP code east of U.S. 131, between Franklin
and 28th streets, more than 15 percent of children ages
1 and 2 tested for elevated levels of lead last year.
Citywide, 11 percent of children 5 and under have more
than five micrograms per deciliter of blood..."
http://www.mlive.com/news/grand-rapids/index.ssf/2016/03/more_kids_in_grand_rapids_are.html