Pilot tests discovered high levels of lead in three water fountains at this school on Chicago's South Side. The fountains were shut down and replaced with water coolers. Cheryl Corley/NPR hide caption

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High Lead Levels Discovered In Chicago School's Drinking Fountains

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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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A Madison Water Utility Crew works to dig up and replace a broken water shutoff box in preparation for a larger pipe-lining project. Madison started using copper instead of lead pipes in the late 1920s. Cheryl Corley/NPR hide caption

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Avoiding A Future Crisis, Madison Removed Lead Water Pipes 15 Years Ago

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The village of Hoosick Falls, N.Y., sits along the Hoosick River in eastern New York. Elevated levels of a suspected carcinogen known as PFOA were found in the village's well water, which is now filtered. Hansi Lo Wang/NPR hide caption

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Elevated Levels Of Suspected Carcinogen Found In States' Drinking Water

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Virginia Tech students from professor Marc Edwards' lab and other student volunteers work on a second round of water testing for lead contamination in Elnora Carthan's home in Flint, Mich. Maggie Carolan is working with samples at the table. Logan Wallace/Virginia Tech hide caption

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Flint Residents Tired Of Talk And Tests, Eager For Solution

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Aedes aegypti mosquitoes are seen in a lab at the Fiocruz institute in the Brazilian city of Recife. Mario Tama/Getty Images hide caption

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Did A Pesticide Cause Microcephaly In Brazil? Unlikely, Say Experts

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A group of community leaders from Denver's Westwood neighborhood toured the Waterton Canyon Reservoir in late October, to learn how the city's water is filtered and treated. Courtesy of Cavities Get Around hide caption

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Selling The Health Benefits Of Denver's Tap Water — After Flint

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Pallets of bottled water are seen ready for distribution in a Flint, Mich., warehouse on Jan. 21. The warehouse is the emergency water supply for Flint residents affected by lead-contaminated water. Sarah Rice/Getty Images hide caption

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Flint Begins The Long Process Of Fixing Its Water Problem

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Grace Jerry performs her original single "E Go Happen" at a gathering of young African leaders at Montpelier, James Madison's home. The lyrics say: "Yes we can, sure we can change the world." YouTube hide caption

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