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 1:26 What is botulism? 1:32 How to prevent mosquito bites 4:57 Everything you need to know about IVF 1:11 What is ‘factitious disorder imposed on another,' or FDIA? 0:34 FDA expands eye drop recall to include 27 additional products