Mayor Karen Weaver takes a sip of water at the House Democratic Steering & Policy Committee hearing titled, "The Flint Water Crisis: Lessons for Protecting America's Children." Gabriella Demczuk/Getty Images hide caption

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Flint Mayor: 'Everybody Played A Role In This Disaster'

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Where Lead Lurks And Why Even Small Amounts Matter

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Dr. Alan Leviton (L), Dr. Herbert Needleman, and Dr. David Bellinger (R) at the Charles A. Dana Foundation Award ceremony in 1989. Needleman won an award for his research on lead poisoning. Photo courtesy of David Bellinger/Photo courtesy of David Bellinger hide caption

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Lead Poisoning: A Doctor's Lifelong Crusade To Save Children From It

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Lead in the drinking water in Flint, Mich., has caused a massive public health crisis and prompted President Obama to declare a federal state of emergency there. Carlos Osorio/AP hide caption

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Educators In Flint Step Up Efforts To Reach Youngest Victims Of Tainted Water

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Chicago's North Broadway Street has been undergoing water main upgrades in the past few weeks, with more work scheduled this year. The upgrades are part of the city's 10-year plan to replace 900 miles of water pipes. Cheryl Corley/NPR hide caption

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Chicago's Upgrades To Aging Water Lines May Disturb Lead Pipes

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Hector Moreno checks a basement for lead paint in Baltimore. He is an environmental assessor with Green and Healthy Homes. Jennifer Ludden/NPR hide caption

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Baltimore Struggles To Protect Children From Lead Paint

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Signs warn not to drink the lead-contaminated water from a water fountain in Flint, Mich. Jacquelyn Martin/AP hide caption

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America's 'Lead Wars' Go Beyond Flint, Mich.: 'It's Now Really Everywhere'

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Ashara Manns says she has to plan her meals around how much bottled water she has. Rebecca Kruth for NPR hide caption

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Doctors In Flint, Mich., Push A Healthy Diet To Fight Lead Exposure

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A Flint resident cries out during the filing of a class action lawsuit against city and state government officials on Monday, Nov. 16, 2015. JAKE MAY/MLIVE.COM /Landov hide caption

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A production facility that created lead paint and other lead products once stood at Almond and Cumberland Streets, across Aramingo Avenue in Philadelphia. Kimberly Paynter/WHYY hide caption

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Calls Continue For EPA To Clean Up Former Lead Production Site In Philly

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Residents of Flint, Mich. (shown here in January), have been protesting the quality and cost of the city's tap water for more than a year. Steve Carmody/Michigan Radio hide caption

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High Lead Levels In Michigan Kids After City Switches Water Source

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Kids and teens should get two to three quarts of water per day, via food or drink, research suggests. iStockphoto hide caption

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Got Water? Most Kids, Teens Don't Drink Enough

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Gado Labbo holds her 5-year-old son, Yusuf, at a clinic in Dareta, Nigeria. In 2010, when Yusuf first entered the clinic, he had a blood lead level 30 times higher than the amount the Centers for Disease Control and Prevention considers dangerous. David Gilkey/NPR hide caption

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A child wearing the traditional eyeliner kajal peeps from behind a door in Allahabad, India. Rajesh Kumar Singh/AP hide caption

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