Featured Research

from universities, journals, and other organizations

Wastewater reveals drug consumption picture

Date:
May 27, 2014
Source:
EAWAG: Swiss Federal Institute of Aquatic Science and Technology
Summary:
In 2013, wastewater samples from European cities were tested for drug traces for the third time. Basel, Berne, Geneva, St. Gallen and Zurich were among the 42 cities which took part in the study. Over the course of a week, the wastewater of around 1.4 million people in Switzerland was tested for cocaine, amphetamine, crystal meth and ecstasy. Results showed differences between cities, and between weekends and weekdays.

Sampling wastewater at the Werdhölzli wastewater treatment plant in Zurich.
Credit: Eawag, Peter Penicka

In 2013, wastewater samples from European cities were tested for drug traces for the third time. Basel, Berne, Geneva, St. Gallen and Zurich were among the 42 cities which took part in the study. Over the course of a week, the wastewater of around 1.4 million people in Switzerland was tested for cocaine, amphetamine, crystal meth and ecstasy. The findings are published today in the peer-reviewed journal Addiction. Along with the Swiss Federal Institute of Aquatic Science and Technology Eawag, the work involved over 20 other research bodies and laboratories.

Related Articles


High levels of cocaine in Zurich

Zurich had the third highest cocaine use after Antwerp (Belgium) and Amsterdam (The Netherlands) during the week in which the study took place. Taking account of estimates with regard to purity and metabolism, around 1.6 kilogrammes of cocaine are used every day in Zurich. With the exception of Berne, the other Swiss cities are also above the European average, with Basel and Geneva in 9th and 10th place, St. Gallen in 12th place, and Berne at number 15. Whether it is that the cocaine being used in Switzerland has a comparatively high level of purity, or there is a higher use per head or more users than was previously estimated from other studies is yet unknown. In contrast, the figures for the designer drug crystal meth sit well below the average. The forerunners in this case are the Czech cities of Prague and Budweis, and Oslo, capital of Norway. (Detailed tables can be found in the aforementioned article.)

Ecstasy -- primarily at weekends

The wastewater analysis enables the reconstruction of a snapshot mapping drug use over time. As one might expect, the use of the recreational drug ecstasy varies dramatically between normal workdays and the weekend (see graph). With cocaine, the difference between workdays and weekends is smaller, but nevertheless still statistically significant. This indicates that cocaine is also used during the week -- and to some extent on a daily basis by addicts.

Unfortunately, the analysis figures for cannabis in Switzerland did not meet the stringent requirements for the participating laboratories. As Switzerland is known to have a high level of cannabis use, this data would have been particularly interesting. Topping the chart for cannabis are Novi Sad (Serbia), Amsterdam and Paris.

Long term: closer monitoring

From the standpoint of the first author of the study, engineer Christoph Ort from the Swiss Federal Institute of Aquatic Science and Technology Eawag, the "league table" of cities is not the central issue. For him, what is of far greater importance is the objective of obtaining comparative data much more quickly than is currently possible with national drug monitoring programmes. The small numbers of cases, for example, imply that these programmes cannot adequately indicate how many people use a drug in a particular region. When combined with data from other studies and statistics (e.g. surveys at parties, Addiction Monitoring in Switzerland, Global Drug Survey), the wastewater data, on the other hand, allows trends to be identified and confirmed more rapidly: the rise in ecstasy and cocaine levels found in the wastewater study from 2012 to 2013 is, for example, consistent with the substance analysis data of Saferparty.ch, run by the City of Zurich youth organisation, Streetwork. The rise is attributed to an increase in the purity of the cocaine and to higher-dose ecstasy pills. "Wastewater analyses offer the potential of improved quantification of substance use within a geographically defined area," affirms Alexander Bücheli from Safer Nightlife Switzerland. "It is still very difficult to draw conclusions as to the actual numbers of users, however, as this requires a series of assumptions to be made." It is hoped that future transdisciplinary projects will close this gap.


Story Source:

The above story is based on materials provided by EAWAG: Swiss Federal Institute of Aquatic Science and Technology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Christoph Ort, Alexander L. N. van Nuijs, Jean-Daniel Berset, Lubertus Bijlsma, Sara Castiglioni, Adrian Covaci, Pim de Voogt, Erik Emke, Despo Fatta-Kassinos, Paul Griffiths, Félix Hernández, Iria González-Mariño, Roman Grabic, Barbara Kasprzyk-Hordern, Nicola Mastroianni, Axel Meierjohann, Thomas Nefau, Marcus Östman, Yolanda Pico, Ines Racamonde, Malcolm Reid, Jaroslav Slobodnik, Senka Terzic, Nikolaos Thomaidis, Kevin V. Thomas. Spatial differences and temporal changes in illicit drug use in Europe quantified by wastewater analysis. Addiction, 2014; DOI: 10.1111/add.12570

Cite This Page:

EAWAG: Swiss Federal Institute of Aquatic Science and Technology. "Wastewater reveals drug consumption picture." ScienceDaily. ScienceDaily, 27 May 2014. <www.sciencedaily.com/releases/2014/05/140527085447.htm>.
EAWAG: Swiss Federal Institute of Aquatic Science and Technology. (2014, May 27). Wastewater reveals drug consumption picture. ScienceDaily. Retrieved February 28, 2015 from www.sciencedaily.com/releases/2014/05/140527085447.htm
EAWAG: Swiss Federal Institute of Aquatic Science and Technology. "Wastewater reveals drug consumption picture." ScienceDaily. www.sciencedaily.com/releases/2014/05/140527085447.htm (accessed February 28, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, February 28, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could a $34 Smartphone Device Improve HIV Diagnosis in Africa?

Could a $34 Smartphone Device Improve HIV Diagnosis in Africa?

Reuters - Innovations Video Online (Feb. 27, 2015) — A dongle that plugs into a Smartphone mimics a lab-based blood test for HIV and syphilis and can detect the diseases in 15 minutes, say researchers. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Doctor Says Head Transplants Possible Within Two Years

Doctor Says Head Transplants Possible Within Two Years

Buzz60 (Feb. 27, 2015) — An Italian doctor is saying he could stick someone&apos;s head onto someone else&apos;s body. Patrick Jones (@Patrick_E_Jones) reports. Video provided by Buzz60
Powered by NewsLook.com
How Your Dentist Could Help Screen You For Diabetes

How Your Dentist Could Help Screen You For Diabetes

Newsy (Feb. 27, 2015) — A new study from researchers at New York University suggests dentists could soon use blood samples taken from patients&apos; mouths to test for diabetes. Video provided by Newsy
Powered by NewsLook.com
The Best Tips to Makeover Your Health

The Best Tips to Makeover Your Health

Buzz60 (Feb. 27, 2015) — If you&apos;re looking to boost your health this season, there are a few quick and easy steps to prompt you for success. Krystin Goodwin (@Krystingoodwin) has the best tips to give your health a makeover this spring! Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins