Europe Samples Sewage Water to Find Its Biggest Drug Cities

Antwerp, Belgium Photograph by David Sanger/Corbis

The Belgian city of Antwerp is known for its Gothic cathedral and its skilled diamond cutters. It may also have a little-noticed drug problem. A new study revealed traces of cocaine, amphetamines, cannabis, and ecstasy in Antwerp’s sewage—all at levels among the highest of 42 European cities tested.

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