U.S. water systems repeatedly exceed federal lead standards

Following the lead-tainted drinking water crisis in Flint, Michigan an Associated Press investigation into EPA records found nearly 1,400 water systems providing tap water to almost 4 million Americans exceeded acceptable levels of lead at least once between 2013 and 2015. AP Reporter Meghan Hoyer, who co-wrote a story on the investigation, joined Hari Sreenivasan to discuss the problem.