Statistics Canada sifting through sewage to gauge pot consumption

Agency says sales data tracks legal marijuana but this will track illicit sales too

Statistics Canada sifting through sewage to gauge pot consumption

The federal government is taking a somewhat noxious approach to studying just how much pot Canadians are consuming: researching our sewage.

Statistics Canada will spend up to $600,000 a year for a contractor to regularly test waste water from 15 to 20 municipalities across the country for traces of THC, the active ingredient in marijuana, and other drugs.

The survey could be the best way to collect precise data on the amount of pot Canadians consume, according to Anthony Peluso, an assistant director at Statistics Canada.

“We want to have a good indication of actual consumption numbers,” said Peluso. “Sometimes we do get quantities, but we’re not sure.”

READ: B.C. government marijuana stores will compete with private sellers

Peluso said that by using the same methodology from sewage analysis surveys in Europe that have proven accurate in the past, Statistics Canada believes it will be able to fill some of its information gap that way.

After cannabis is metabolized by the body, traces of THC are left behind in human waste. Samples of waste water from sewage treatment plants can then be collected and tested for the substance.

The waste water would be collected over the course of one week every month for at least one year with the possibility of expanding to three if the results are useful, according to Statistics Canada’s contract proposal.

Six municipalities covering a combined population of nearly eight million people are already on board with the survey. But Statistics Canada would not say which municipalities have signed on.

Peluso indicated that the survey may also help the federal government track pot purchased on the black market even after the drug is legalized in July.

“It is possible that if we’re able to get the consumption numbers and figure out what legal sales are, we might be able to get some estimate of illegal consumption as well,” he said.

That’s because the waste water tests will show how much marijuana is actually consumed, while legal sales data will only show how much pot is bought on the official market.

The technology used to track marijuana consumption in waste water can also be used to detect other drugs like cocaine and methamphetamines. Peluso said Statistics Canada is planning on taking advantage of that data as well.

“The methodology is there. It handles cannabis and it handles everything else for roughly the same price,” he said. “You’d be a fool to say no from a statistical point of view.”

DATTA Engineering Inc., a civil engineering and infrastructure firm based in Ottawa, has already indicated interest in the contract.

Bidding for the contract closes Feb. 26.

Levi Garber, The Canadian Press


@katslepian

katya.slepian@bpdigital.ca

Like us on Facebook and follow us on Twitter.

marijuana

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

Just Posted

FILE – A COVID-19 vaccine being prepared. (Olivia Sullivan/Sound Publishing)
B.C. seniors 80 years and older to get COVID vaccine details over next 2 weeks: Henry

Province is expanding vaccine workforce as officials ramp up age-based rollout

Parskville Fire Department Fire Engine. (PQB News file photo)
Parksville council supports increase in tax credit allowance for volunteer firefighters

Petition for move raised by Courtenay-Alberni MP Gord Johns

(PQB News file photo)
Qualicum Beach council to vote Feb. 24 on chief election officer

Once appointment is approved, byelection will be held for open councillor spot

Dr. Bonnie Henry leaves the podium after a news conference at the legislature in Victoria on Friday, January 22, 2021. THE CANADIAN PRESS/Chad Hipolito
B.C. reports 559 new cases of COVID-19, one death

4,677 cases of the virus remain active in the province; 238 people are in hospital

Vancouver Canucks left wing Antoine Roussel (26) tries to get a shot past Edmonton Oilers goaltender Mike Smith (41) during second period NHL action in Vancouver, Tuesday, Feb. 23, 2021. THE CANADIAN PRESS/Jonathan Hayward
Canucks cough up 3-0 lead, fall 4-3 to visiting Edmonton Oilers

Vancouver falls to 8-13-2 on the NHL season

Jessica McCallum-Miller receives her signed oath of office from city chief administrative officer Heather Avison on Nov. 5, 2018 after being elected to Terrace City Council. McCallum-Miller resigned on Feb. 22, 2021, saying she felt unsupported and unheard by council. (Black Press Media File Photo)
Terrace’s 1st Indigenous councillor resigns citing ‘systemic and internalized racism,’ sexism

McCallum-Miller said in a Facebook post she felt unheard and unsupported by council

Temporary changes to allow for wholesale pricing for the hospitality industry were implemented June 2020 and set to expire March 31.	(Pixabay photo)
Pubs, restaurants to pay wholesale prices on liquor permanently in COVID-recovery

Pre-pandemic, restaurateurs and tourism operators paid full retail price on most liquor purchases

Wade Dyck with Luna, a dog who went missing near the Chasm for 17 days following a rollover on Feb. 5. (Photo submitted).
Dog missing for 17 days through cold snap reunited with owner in northern B.C.

Family ecstatic to have the Pyrenees-Shepherd cross back home.

Quesnel RCMP confirmed they are investigating a residential break-in at a home on the Barkerville Highway. (File image)
Thieves make off with $300K in Cariboo miner’s retirement gold

Tim Klemen is offering a reward for the return of his gold

Cowichan Tribes members line up at a drive-up clinic on Wednesday, Jan. 13 to receive the first doses of the COVID-19 vaccine in the region. (Kevin Rothbauer/Citizen)
Cowichan Tribes COVID-19 death count hits four

Second doses of Pfizer vaccine expected on March 8 as community count hits 230 since Dec. 31

Ghislaine Maxwell was arrested in New Hampshire. Image: The Canadian Press
Epstein associate Ghislaine Maxwell makes third attempt at bail on sex charges

Maxwell claims she will renounce her U.K. and French citizenships if freed

Most Read