Infographic. Cannabis residues in wastewater in selected European cities: most recent data (updated June 2024)

This resource is part of the European Drug Report 2024, the EMCDDA's annual overview of the drug situation in Europe.

Cannabis residues in wastewater in selected European cities: most recent data

Red = increase | Green = decrease | Yellow = stable, with respect to previous value | Blue = no previous data

Mean daily amounts of THC-COOH in milligrams per 1000 population. In most cities, sampling was carried out over a week between March and May 2023.
Taking into account statistical errors, values that differ less than 10 % from the previous value are considered stable in this figure.
Source: Sewage Analysis Core Group Europe (SCORE)
For the complete data set and analysis, see Wastewater analysis and drugs – a European multi-city study.

 

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Originally published in

European Drug Report 2024: Trends and Developments

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