Sewer samples show Haligonians use more cannabis than other Canadians
The results of a pilot study that measures how much cannabis has moved through human bodies and been flushed down the toilet add to the evidence that Haligonians consume more cannabis than other Canadians.
Statistics Canada is turning to new methods of measuring cannabis consumption after noting that people are likely to under-report pot use because of stigma and a reluctance to divulge black-market purchases. Testing for chemical components of cannabis that have gone down the drain could help to paint a more accurate picture, the organization says.
Using a technique called wastewater-based epidemiology (WBE), Statistics Canada says it has estimated the total mass of cannabis consumed in Halifax, Montreal, Toronto, Edmonton, and Vancouver from March to August 2018.
A report released Thursday shows that Halifax surpassed each of the four other cities in the average amount of cannabis consumed per person, per week, at about 1,300 micrograms.