StatCan study testing wastewater suggests Canadians’ drug use varies by city

Aug 26, 2019 | 2:36 PM

MONTREAL — A pilot project that analyzed wastewater in five major urban centres suggests Canadians’ drug use varies from city to city.

For example, the analysis by Statistics Canada showed cannabis levels are much higher in Montreal and Halifax than in Toronto, Vancouver and Edmonton.

But the findings reported today showed methamphetamine levels were significantly higher in the latter two cities.

To get results, the agency collected wastewater samples from treatment plants in each of the five major cities between March 2018 and February 2019 and tested them for traces of cannabis and a dozen other drugs.