Baby formula / foods could not have heavy metals
Bullets could be made from copper or steel to prevent lead poisoning in animal food chains
Cities/towns could develop a city rent escrow account program, grade rental properties, create a tenants union, have training on healthy housing, and reward good landlords
Citizens could check their environment / drinking water
Lead poisoning awareness campaigns and preventative actions could happen across the world
U.S. water utilities could establish a timeline for lead pipes replacement