(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

Crib challenge cup winners

55 plus zone 4 winners

Truck broken into, parked by local hotel

Trailer stolen from Ponoka area

Several players from Rimbey are on the West Central Tigers hockey team.

West Central Tigers tie Airdrie 3-3 in Rimbey, Saturday. Treena Mielke Photo

VIDEO: Province’s top court sides with Alberta on federal carbon tax

Today’s decision is the first to side with a province against the federal government

Father and two children, from Southern Alberta, killed in fatal crash in B.C.

The single vehicle crash occured near Kamloops on Highway 5A

Teck CEO says Frontier withdrawal a result of tensions over climate, reconciliation

Don Lindsay speaks at mining conference, a day after announcing suspension of oilsands project

Harvey Weinstein found guilty of sex crimes in landmark #MeToo trial

The cases against the Hollywood mogul started the #MeToo movement

CRA puts focus on paper returns as tax-filing season opens

The federal tax collector expects to handle about two million paper returns this calendar year out of roughly 26 million filings

Teck withdraws application for Frontier mine, citing discourse over climate change

The Vancouver-based company said it will take a $1.13-billion writedown on the Frontier project in Alberta

Violent ends to past Indigenous protests haunt Trudeau government

Trudeau adopted a more assertive tone Friday, insisting the barricade must come down

Blockades remain in place as Wet’suwet’en hereditary chiefs returning to B.C.

Hereditary Chief Woos said they are ready to engage in nation-to-nation talks with the B.C.

Two goals by Ben King pushes Rebels over Tri-city

7-5 game a high-scoring, runaway according to Rebels forward Chris Douglas

Most Read