There's an interesting article in the Beacon lead poisoning in St. Louis. Progress seems to be being made in some of the poorer St. Louis neighborhoods:
Beacon linkLead poisoning rates have been part of city Health Department reports for at least 39 years. During 27 of those years, the childhood lead poisoning rate has been 10 percent or higher -- and as much as 48.5 percent in 1992; 34 percent in 1972; 32.3 percent in 1973, and 31.1 percent in 2000..."Right now," [city manager for children's environmental health] Arrighi beams, "the rate of lead poisoning in the city is a little under 3 percent."



