Before Flint: How Americans Chose Lead Poisoning

The United States, unlike other Western nations, did not take a firm stance on lead-based products until much later--despite knowing the health risks. 
Electrolytically refined pure (99.989 %) superficially oxidized lead nodules and a high purity (99.989 %) 1 cm3 lead cube for comparison.

Lead: Our Four-Thousand Year Old Pollutant

The history of lead pollution goes back 4000 years.