Analysis of water quality downstream of Atlanta shows that some pollutants from the city are still detectable more than 500 kilometers away.
Atlanta, one of the fastest growing metropolitan areas in the eastern United States, already sprawls across an area larger than the state of Delaware and is home to more than 3.8 million people. Upstream from Atlanta, the water in the Chattahoochee River is clean; downriver, the chemical signs of human habitation and industrial activity abound, says W. Berry Lyons, a hydrologist at Ohio State University in Columbus.
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