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Loading interactive feature… please wait. Note that this interactive feature requires a modern web browser. In particular, older versions of Internet Explorer (prior to 10) or Internet Explorer 10 running in 'compatibility view' may not work.

The Europe-wide study including over 60 cities revealed a picture of distinct geographical and temporal patterns of drug use across European cities. There are two ways to visualise the data from this study, either viewing the data on a map or using a specially-developed charting tool. You can switch between the two views at any point. Please note that the data used for this visulisation also includes the year 2016 — the text in the Analysis has not yet been updated to reflect this.

map view screenshot
map view screenshot

How to use the charting tool? To explore the findings of the study, select the 'city' of choice and the 'target drug'. You can compare sites or explore daily and yearly trends. Weekend means refer to the mean loads detected on Friday, Saturday, Sunday and Monday. Weekday means refer to mean loads detected on the other days of the week. The findings from 2011-2016 are included in this tool.

XXX Filter sites

Filter results by selecting which sites to display from the list below. Note that not all sites have data entries for all possible drug, year and day values.

Select target drug:

Select something to visualise:

 
 

Select a year:

Select target drug:

Explore daily patterns:

Click anywhere on the map to zoom out

Click on a location to zoom in

 
 
 
 
 

How to use this map? By scrolling over the bubbles, the city name and data become visible. By zooming in on your country of interest, additional cities will show allowing further exploration of the city level data in your country of interest. To further explore the findings of the study, select the ‘target drug’ and the ‘temporal pattern’ of choice. Weekend means refer to the mean loads detected on Friday, Saturday, Sunday and Monday. Weekday means refer to mean loads detected on the other days of the week. The findings from the 2011-2016 period are included in this map. Bubble sizes are not comparable between different target drugs, but are comparable within one substance.

Additional notes:

MDMA - 2012/2013: Eindhoven exhibited abnormal high values for MDMA in 2012, 2013 and 2014, which might be due to the release of unconsumed MDMA into the sewer syste.

Amphetamine 2013: Eindhoven exhibited abnormal high values for amphetamine in 2013 (Ort et al., 2014).

Reijkjavik: comparison across years need to be made with caution as in 2016 two treatment plants were sampled (1 treatment plant in previous years)

Note: This graphical tool was amended (12 December 2016 at 15.30) to correct the values given for the weekday and weekend mean scores for cocaine for London. This was necessary because the script used to generate these data misallocated the values by one calendar day. This resulted in a small error in the mean values reported for weekday and weekend scores that has now been corrected. However, this has had no impact on the overall mean weekly score, nor the overall ranking of the cities.

Supported browsers

Please note that this interactive feature requires a recent browser. Older browsers, in particular versions of Internet Explorer prior to 10, may not function correctly.

 

europe50m.json
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data.js
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highcharts.js
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d3.v3.min.js
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d3.geo.projection.v0.min.js
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topojson.v1.min.js
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wastewater-dataV5.csv
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europe50m.json
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aight.min.js
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wastewater2016.js
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Page last updated: Tuesday, 07 February 2017