The European Monitoring Centre for Drugs and Drug Addiction release data every year showing the levels of certain illicit drugs found in the wastewater of select European cities.
London has Europe’s highest concentration of cocaine in sewage, research shows. Experts said the UK capital was ahead of Zurich, with the EU’s drug agency putting the average daily concentration of cocaine in London’s waste water at 894.9mg per 1,000 people in 2016.
The chart below shows the levels of cocaine found in wastewater in selected European cities in 2016.
Citizens of the U.K. capital do more cocaine than people in any other city in Europe during the work week.
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