June 29, 2016 10:36 am Over 5,000 Water Systems Failing to Test for Lead The Natural Resources Defense Council reports more than 18 million Americans got their drinking water from systems with lead violations in 2015. US & World Videos 1:45 NYPD enters Columbia University in riot gear to clear protest 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 2:04 Arrests made, camps removed during pro-Palestinian protest at UConn 1:01 Biden administration plans to reclassify marijuana as a Schedule III drug