The Statistics Canada issued a report which measures the consumption of cannabis in large Canadian cities based on drainage analysis.
The report collected data from five major cities including Vancouver, Edmonton, Toronto, Montreal, and Halifax. Specifically, the report studies the "Metro Vancouver area", Montreal Island, City Edmonton, Toronto City, and Halifax Central.
Vancouver came dead last when it came to the amount of & # 39; use of cannabis per capita, which can & # 39; come as a shock to some. Slightly more surprising, however, is that Halifax has been the leader in the amount of & # 39; use of cannabis per capita.
B & # 39; & # 39 this in, her mind, a number of & # 39; factors weighing on the overall results. For example, the report notes that "the sewage treatment plant in & # 39; Halifax was located in the central area of the city and as a result, consumption of cannabis measured there can not represent the population full metropolitan city. "
In addition, temperature, acidity and the presence of & # 39; industrial chemicals or bacteria in the sewage system & # 39; each city may also alter the results.
Drainage Canadian Cannabis
So, how exactly are the cannabis levels measured in the wastewater?
The researchers utilized a new form of & # 39; research called "epidemiology-based wastewater" to measure metabolites that people eliminate their bodies.
"When people consume cannabis or tetrahydrocannabinol (THC), the main constituent of cannabis psychopathic, their bodies process the cannabis in & # 39; marditi (THC-COOH, in the case of & # 39; THC) which are then eliminated from the body and typically rinsed with a & # 39; municipal sewage system ", reads the report.
"Through & # 39; direct analysis of concentrations of & # 39; THC-COOH in wastewater, Statistics Canada can & # 39; estimate the total mass of & # 39; consumed cannabis."
The pilot project covered areas covered 15 plant & # 39; wastewater treatment in & # 39; five major urban centers across Canada, representing nearly 8.4 million people. As such, making the project one of, if not continuous ongoing tests WBE today.