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The 15 most toxic places to live

Riachuelo Basin

Photo: FJTU/Flickr

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Riachuelo Basin, Argentina

The Riachuelo Basin is a waterway whose name is synonymous with pollution. More than 3,500 factories operate along the banks of the river, a landscape that also includes 13 slums, numerous illegal sewage pipes running directly into the river, and 42 open garbage dumps.