(Unsplash)

Down the toilet: Study compares pot, meth, cocaine found in sewage across Canada

More meth found in Vancouver, more cannabis in Halifax

What you flush down the toilet says a lot about you, at least to Statistics Canada.

The agency released results Monday from a year-long sewage study in five major cities, including Vancouver, where it tested the wastewater for various drugs. It began in March 2018 and ran until the spring of 2019.

Meth use was highest in Vancouver and Edmonton, the results suggest, while cannabis use was highest in Montreal and Halifax.

The average methamphetamine load across all five cities was 270 grams per million people per week, but the average in Vancouver and Edmonton was 3.7 times higher than the next cities, Montreal and Toronto.

Despite B.C.’s reputation as the most cannabis-friendly province, Vancouver had the second-lowest consumed amount of THC, the psychoactive ingredient in cannabis.

Researchers measured the amount of pot in the cities’ wastewater using a compound produced by the body when cannabis is consumed.

The average weekly load in Vancouver was 313 grams per million people, compared to 936 grams in Halifax and 833 grams in Montreal. Toronto was similar to Vancouver, at 327 grams, while Edmonton lagged behind with 244 grams.

Despite recreational cannabis becoming legal in October 2018, the study found no spike of the substance in sewage that month. The highest amounts were recorded in May and June 2018, with a smaller uptick in December.

Cocaine use was fairly steady across the five cities, with Edmonton coming in the lowest at 268 grams per million people per week while Vancouver came in on top at 425 grams.

READ MORE: Here’s a first look at Canada’s sewage tests for cannabis use

READ MORE: Statistics Canada sifting through sewage to gauge pot consumption


@katslepian

katya.slepian@bpdigital.ca

Like us on Facebook and follow us on Twitter.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

CHN, province reach ‘milestone’ tree cutting agreement, reducing annual cut by 13%

Haida Gwaii Management Council has determined new allowable annual cut of 804,000 cubic metres

Outage impacting south island GwaiiComm, Mascon customers

GwaiiTel aware of cable and internet outage; techs dispatched

VIDEO: B.C. artist filmed apocalyptic timelapse on Haida Gwaii

Tasha Lavdovsky footage symbolizes sea level rise; featured in Ora Cogan music video for ‘Sleeping’

‘Haida Modern’ doc on Robert Davidson to stream online in June

Award-winning documentary will premiere on Knowledge Network June 2

Some restaurants on Haida Gwaii hosting dine-in guests again

Queen B’s, Oceanview offering limited seating; barbershop in Queen Charlotte also reopened this week

Kelowna man charged with harming a hamster

The 20-year-old Kelowna man faces several animal cruelty charges

High tech fish transport system set up to ‘whoosh’ salmon past Big Bar landslide

Fish will spend roughly 20 seconds inside the system, moving at roughly 20 metres per second

Trudeau to seek 10 days of paid sick leave for Canadian workers, says talks are ongoing

Paid sick leave is key to keeping COVID-19 spread under control, prime minister says

Snowbirds jets will not be leaving Kamloops, just yet

The Snowbirds have been in Kamloops since May 17 when a plane crashed killing Capt. Jennifer Casey

Introducing the West Coast Traveller: A voyage of the mind

Top armchair travel content for Alaska, Yukon, BC, Alberta, Washington, Oregon and California!

COVID-19 checkpoints ‘up to them,’ Bonnie Henry says of remote B.C. villages

Support local tourism economy, but only if you’re invited in

Vancouver Island hasn’t seen a new homegrown case of COVID-19 in two weeks

Island’s low and steady transmission rate chalked up to several factors

Eight people arrested in Victoria homeless camp after enforcement order issued

Those living in tents were given until May 20 to move indoors

Most Read