In 2014 this Europe-wide study, which includes over 50 cities, showed distinct geographical and temporal patterns of drug use across European cities. The results provide a valuable snapshot of the drug flow through the cities involved, revealing marked geographical and spatial variations.
Explore the interactive tool.
In 2010, the Europe-wide network (Sewage Analysis CORE Group — Europe) was established to standardise the approach to wastewater analysis and to coordinate national studies. Following the success of an initial study in 19 European cities a comparable study was undertaken covering 23 cities in 11 European countries in 2012 and 42 cities in 21 European countries in 2013.