(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

Oak Bay couple honoured for 35 years volunteering

Mayor awards distinguished Oak Leaf to Bert and Doris Dinsmore

Meet the Liberal candidate for Oak Bay-Gordon Head

Roxanne Helme about ‘governance, not politics’

Hospital foundation president praises generosity of Peninsula residents

Karen Morgan said support during COVID-19, financial and otherwise, has been touching

New Democrats on Saanich Peninsula still looking to announce candidate

While BC Liberals have nominated Stephen Roberts, New Democrats have not yet announced candidate

UPDATED: West Shore RCMP locate dangerous, ‘high-risk sex offender’ thanks to help of taxi cab driver

Scott Jones wanted on a Canada-wide warrant, ‘a risk to women and girls,’ police say

QUIZ: Do you know what’s on TV?

Fall is normally the time when new television shows are released

POLL: Do you agree with the decision to call a provincial election for Oct. 24?

British Columbians will put their social distancing skills to the test when… Continue reading

Canadian ski resorts wrestle with pandemic-vs.-profit dilemma as COVID-19 persists

Few are actually restricting the total number of skiers they allow on the hill

Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

A (virtual) walk around the world by 88-year-old B.C. man

George Doi says it’s simple: ‘I like walking’

Join Black Press Media and Do Some Good

Pay it Forward program supports local businesses in their community giving

End of CERB means uncertainty for some, new system for others

As of a week ago, the CERB had paid out $79.3 billion to 8.8 million people

Horgan, Wilkinson trade barbs over MSP premiums, health care at campaign stops

Horgan called a snap election for Oct. 24 earlier this week

Most Read