Special Featured: Narcotics | Statistics based on a continental sewage survey show a clear picture of local consumers preferred environments and especially of convenient regional cities
- Stephan Martin Bischop-Vriesde

- Dec 3, 2025
- 3 min read
Updated: Dec 11, 2025
Article concept winter 2023/2024 (Central European Time) UTC+1^

Nowhere in Europe are there more cocaine residues in sewage water than in The Netherlands. There by they are also in the top 3 for found traces of MDMA and ketamine. Antwerp in particular is the absolute leader. This is evident from an annual study by the European Drug Agency EUDA, which examines sewage water in various cities. There after the Belgian Capitalists are also in the top 3 for MDMA and ketamine consumation.
The underlaying article is written, composed and established by Hanne Decré
on Wednesday the 19th of March 2025 at 13:22h.

The European Drug Agency EUDA annually compares sewage water in 128 cities spread across 26 countries. For one week between March and May 2024, sewage water samples will be analyzed daily in the cities. That corresponds to samples from approximately 68.8 million people. They are then tested for 6 types of drugs: cocaine, amphetamine, MDMA, ketamine, methamphetamine and cannabis.
Overall, more cocaine, MDMA and amphetamine residues were found in European cities.
Antwerp is the absolute leader when it comes to cocaine, followed by Tarragona, Amsterdam and Brussels. More cocaine residues were found in both Antwerp and Brussels than in 2023.
The following research analysis are explicit and therefore apply on recent annual measuring from especially European Institutes. As a matter of fact this re-documented article is written by Flamish-Belgian govern judicial functionary Hanne Decré. Thereby the presendance in how which formation the applied information got stated can not be granted as onehundred procent correct and valid. There after this measuring results dispatchment is not insulting, confronting or judging any form of civilian, touristic, employee and or cultural bonding.
[UNFMandateOfficial does seek for opportunity to outfold research outer-continental so there will be providence about actual/annual results (intercontinentally) on our platform].
Top 10 measuring points for most cocaine residues in Europe
µg/1000p/dag
Antwerpen, België 🇧🇪
199.698
Tarragona, Spanje 🇪🇸
148.291
Amsterdam, Nederland 🇳🇱
120.628
Brussel, België 🇧🇪
118.634
Zurich, Zwitserland 🇨🇭
108.639
Rotterdam, Nederland 🇳🇱
97.292
Groningen, Nederland 🇳🇱
93.269
Geneva, Zwitserland 🇨🇭
91.784
Dublin, Ierland 🇮🇪
87.554
Eindhoven, Nederland 🇳🇱
80.989 Top 10 measuring points for most cocaine residues World wide µg/1000p/dag Lebu, Chili 🇨🇱
311.011
Los Angeles, Chili 🇨🇱
262.816
Belo Horizonte, Brazilië 🇧🇷
218.965
Antwerp Zuid, België 🇧🇪
199.698
Concepción, Chili 🇨🇱 170.898
Kitchener, Canada 🇨🇦
149.015
Tarragona, Spanje 🇪🇸
148.291
Amsterdam, Nederland 🇳🇱
120.628
Brussel, België 🇧🇪
118.634
Serraria, Brazilië 🇧🇷
114.612

Top 10 measuring points for most MDMA residues in Europe µg/1000p/day Amsterdam, Nederland 🇳🇱 28.251
Antwerpen, België 🇧🇪
14.031
Utrecht, Nederland 🇳🇱
11.047
Groningen, Nederland 🇳🇱
10.617
Lissabon, Portugal 🇵🇹
8.177
Brussel, België 🇧🇪
7.697
Praag, Tsjechië 🇨🇿
5.474
Castellon, Spanje 🇪🇸
5.194
Zwolle, Nederland 🇳🇱
4.998
Barcelona, Spanje 🇪🇸 4.717 Top 10 measuring points for most ketamine residues in Europe µg/1000p/day Eindhoven, Nederland 🇳🇱
9.077
Antwerpen, België 🇧🇪
7.146
Oslo, Noorwegen 🇳🇴
6.551
Rotterdam, Nederland 🇳🇱
6.144
Barcelona, Spanje 🇪🇸
5.596
Utrecht, Nederland 🇳🇱
4.425
Dublin, Ierland 🇮🇪
4.349
Brussel, België 🇧🇪
4.338
Groningen, Nederland 🇳🇱
4.128
Top 10 measuring points for most amphetamine residues in Europe µg/1000p/day Gävle, Zweden 🇸🇪
51.828
Saarbrücken, Duitsland 🇩🇪
49.856
Bergen, Noorwegen 🇳🇴
43.006
Trondheim, Noorwegen 🇳🇴
39.443
Antwerpen, België 🇧🇪
37.609
Karlstad, Zweden 🇸🇪
36.666
Eindhoven, Nederland 🇳🇱
31.126
Utrecht, Nederland 🇳🇱
30.426
Trollhättan, Zweden 🇸🇪
27.939
Zwolle, Nederland 🇳🇱
27.217
Top 10 measuring points for most methamphetamine
residues in Europe
µg/1000p/day
Ústí nad Labem, Tsjechië
59.546 Ostrava, Tsjechië
57.704
Plzeň, Tsjechië
48.472
České Budějovice, Tsjechië
46.275
Brno, Tsjechië
41.753
Praag, Tsjechië
40.854
Dresden, Duitsland
39.964
Karlovy Vary, Tsjechië
37.195
Erfurt, Duitsland
33.494
Bratislava, Slovakije
29.537
The research noted above are explicit analysis and therefore apply on recent annual measuring from especially European Institutes. As a matter of fact this re-documented article is written by Flamish-Belgian govern judicial functionary Hanne Decré. Thereby the presendance in how which formation the applied information got stated can not be granted as onehundred procent correct and valid. There after this measuring results dispatchment is not insulting, confronting or judging any form of civilian, touristic, employee and or cultural bonding.
[UNFMandateOfficial does seek for opportunity to outfold research outer-continental so there will be providence about actual/annual results (intercontinentally) on our platform].




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