New research shows that London has the highest concentration of cocaine in its sewage than the rest of Europe.
The daily average concentration of the drug in London’s sewage was 737mg per 1,000 people in 2015 – the highest level found in an analysis of over 50 cities across Europe.
However, the capital fell below Amsterdam in the list when taking into account weekend samples only.
The survey showed London had the fourth highest daily concentration of ecstasy.
However, no traces were recorded in the city for the other three drugs tested – cannabis, methamphetamine and amphetamine.
The European Monitoring Centre for Drugs and Drug Addiction said waste water analysis is a ‘rapidly developing scientific discipline with the potential for monitoring real-time population-level trends in illicit drug use’.