The CDC has a good site on lead exposure: https://www.cdc.gov/nceh/lead/prevention/sources.htm https://www.cdc.gov/nceh/lead/prevention/sources.htm The bigges

The CDC has a good site on lead exposure: https://www.cdc.gov/nceh/lead/prevention/sources.htm https://www.cdc.gov/nceh/lead/prevention/sources.htm The biggest concerns are lead paint in older homes, contaminated soil, food and cosmetics, and toys and other consumer products.