(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

Nanwakolas Council makes donation to North Island College to support First Nation students

The money was raised at the 2019 Nanwakolas golf tournament.

LETTER: Texas man deserved to be charged for ‘rescuing’ baby seal

‘I am hopeful that there is still time to lay charges! In this instance I totally think it’s warranted’

Poetry contest started for Vancouver Island poets

“We’re such a unique group,” says founder on why she wanted to start the collective

B.C. would not send students back to school if there was ‘overwhelming risk’: Horgan

Plan has left many parents across the province worried about their children’s safety

VIDEO: A B.C business used robots to bring down concrete walls

Walco Industries is the only firm on Vancouver Island to use specialized robots for hydro-demolition

As CERB winds down, labour group asks Liberals to rethink EI

The government estimates four million people will be moved onto EI after CERB ends

Walmart to make face masks mandatory for customers across Canada

Requirement goes into effect on Wednesday, Aug. 12 across Canada

Masks to be mandatory on BC Transit, TransLink starting Aug. 24

Both BC Transit and TransLink made the announcement in separate press releases on Thursday

Penticton homes evacuated due to wildfire northwest of city

Emergency vehicles are at the scene near Sage Mesa, evacuation centre set up in Penticton

British Columbians worried as end of COVID-19 rental supplement looms

Single mom struggles as supplement was her saving grace

B.C. fish harvesters receive long-awaited details on pandemic benefits

Applications to the $470-million federal assistance programs will open Aug. 24

Most Read