Flint water crisis: What's in that contaminated water

What does it mean that residents of Flint, Michigan, consumed water with dangerously high levels of lead for years before it was recognized as a problem?

What does it mean that residents of Flint, Michigan, consumed water with dangerously high levels of lead for years before it was recognized as a problem? Here are some fast facts about just what's in the Flint water and how it came to pass.