This isn’t a new story.
It just took this long for anyone with power to pretend to pay attention — and even now, with a community-funded health study confirming cancer rates at least 25 percent above the provincial average, Alberta’s response arrived within hours: normal ranges, no causal link, safe to drink.
Meanwhile, in Fort Chipewyan, they’ve been burying their people for decades. Entire families hallowed out by cancer. Children sick with autoimmune diseases. Fish pulled from the Athabasca River with tumours growing inside them. Elders who once drank straight from the creeks now hauling bottled water out on the land. The community has known what was happening. They have said so, over and over again, since before most Canadians had ever heard the name Fort Chipewyan.
The question was never whether something was wrong. The question was who was willing to say so — and who had the power to make sure no one did.
Let’s lay it out. Let the timeline speak. Let the research speak. And let the reader decide what they believe about a half-century of sickness in a community that had the misfortune of sitting downstream of the largest industrial project on earth.
The Industry Arrives: 1929
Industrial oil sands processing on the Athabasca River began in 1929, when Bitumount — Alberta’s first privately-funded commercial oil sands plant — began operating on the east bank of the Athabasca River, approximately 90 kilometres north of Fort McMurray, processing bitumen into asphalt for roofing and road paving. The plant struggled financially, was sold in 1942, taken over by the Alberta government in 1948, and eventually declared a provincial heritage site in 1974. The Bitumount project proved industrial-scale separation of bitumen from oil sands was possible — laying the groundwork for everything that followed.
In 1967, Great Canadian Oil Sands — now Suncor Energy — launches the world’s first large-scale commercial open-pit mine on the Athabasca River, approximately 250 kilometres upstream of Fort Chipewyan. This is the moment the industry goes from experimental to industrial at full scale. At the time, Fort Chipewyan is a thriving community of Mikisew Cree, Athabasca Chipewyan Dene, and Métis people — hunters, trappers, fishers, people whose entire culture and diet is built around the land and water of the Peace-Athabasca Delta. Nobody asks them about the mine. Nobody tells them what is coming.
Elders alive today remember when it began. “The river used to be blue,” one elder told researchers years later. “Now it’s brown. Nobody can fish or drink from it. This has all happened so fast.”
The Water Changes: 1970s–1980s
Through the 1970s and 1980s, community members begin noticing changes that no government study will document for another generation. The water looks different. The fish taste different. Animals that have always been plentiful begin to thin out. Muskrat populations — a cultural and dietary staple — start declining. Elders describe the changes in detail. Their observations are recorded in Traditional Ecological Knowledge but dismissed by industry and government as anecdote, not evidence.
This is the period that researchers will later call the beginning of cumulative contamination — the slow, compounding accumulation of pollutants in water, sediment, and the bodies of the animals the community depends on. It is happening. The community can see it, but no one in a position of authority is measuring it.
The industry-sponsored Regional Aquatics Monitoring Program (RAMP) is initiated in 1997 — thirty years after the first mine opens — to measure PAHs, mercury and other contaminants in Athabasca River water and sediment. It will later be repeatedly criticized by independent reviewers for inadequate study designs, the wrong questions, and a lack of public access to raw data. It is, in the words of one scientific review, not designed to detect the impacts it is supposed to be monitoring.
The Doctor Notices: 1990s–2006
Dr. John O’Connor arrives in Fort Chipewyan and begins working as the community’s fly-in physician in the late 1990s. Within his first years, he notices something he cannot explain: a community of approximately 1,200 people with a volume and variety of cancer — and autoimmune disease — that he is not seeing in his larger practice in Fort McMurray. He begins raising concerns with officials as far back as the 1990s.
“Within the first couple of years, it was plain to me that this community had a lot of illness,” O’Connor told me in my documentary Killer Water. “Cancer and autoimmune diseases, of a type and number that I really wasn’t seeing elsewhere. As the years went by, it dawned on me that this was probably preconceived — that I had touched a raw nerve, because there was no undue alarm.”
In 2006, O’Connor goes public. He tells journalists and officials that he believes the oil sands mines and tailings ponds could be causing elevated rates of rare cancers — particularly bile duct cancer, cholangiocarcinoma, a cancer so rare it typically affects one in 100,000 people — in the Fort Chipewyan population.
Health Canada’s response is to file four professional misconduct complaints against him, accusing him of causing “undue alarm.” He is investigated by the College of Physicians and Surgeons of Alberta.
He is cleared of every charge.
The First Study Confirms It: 2007–2009
2007: Dr. Kevin Timoney, an ecologist with Treeline Ecological Research, completes a water and sediment quality study commissioned by Fort Chipewyan’s own Nunee Health Authority — because the community cannot wait for government to do it. His findings are alarming. Arsenic, mercury and polycyclic aromatic hydrocarbons (PAHs) — a group of chemicals that includes known carcinogens — are present at elevated levels in water and sediment. Analysis of local walleye finds that all fish tested exceeded U.S. guidelines for mercury consumption. Timoney recommends limiting fish consumption to once a week. Children and pregnant women are advised to avoid it altogether. A separate analysis finds that a pregnant woman eating walleye from Lake Athabasca would consume on average 22 times the mercury level recommended by the World Health Organization.
2009: The Alberta Cancer Board — the provincial government’s own body — confirms that cancer rates in Fort Chipewyan are approximately 30 percent above expected. The study notes elevated rates of bile duct cancers, cancers of the blood and lymphatic system, and other rare cancers.
The government does not launch a comprehensive health investigation. It doesn’t mandate independent monitoring. It doesn’t change a single regulatory standard for the industry upstream.
Nothing substantively changes.
The “It’s Natural” Defence — And Why It Doesn’t Hold
Before going further, there is an argument worth addressing directly — because industry and government have deployed it for decades to deflect accountability, and it sounds plausible to people who don’t know the full story.
The argument goes like this: bitumen has always seeped naturally from the Athabasca riverbanks. The contamination people see in the water isn’t from the mines — it’s from geological formations that have been leaching tar into the river for millennia. The Cree and Dene peoples knew about this bitumen long before any European arrived. They used it to seal their birchbark canoes. It’s part of the natural landscape.
All of that is true. And none of it is the point.
Yes, bitumen seeps naturally from the banks of the Athabasca River. Yes, the Cree and Dene used it for waterproofing. That natural seepage — raw bitumen oozing from riverbanks — is chemically different from what is leaking from tailings ponds and spewing from industrial smokestacks. Entirely different.
Here is the distinction that industry hopes you won’t notice:
What’s in natural bitumen seepage: Heavy, viscous crude oil — the same substance that has been part of this landscape for thousands of years. The community lived with this for generations. The river was still blue. The fish were still healthy. The elders still drank from the creeks.
What’s in industrial tailings water: Oil sands process-affected water (OSPW) is not raw bitumen. It’s the chemically complex byproduct of industrial extraction — a toxic mixture that results from processing oil sands with hot water, steam, and chemical additives. It contains residual bitumen, yes, but also naphthenic acids, polycyclic aromatic hydrocarbons, heavy metals including mercury, arsenic, lead and cadmium, benzene, dissolved salts, and industrial chemical additives used in the extraction process. Many of these compounds do not exist in natural bitumen seepage at anything approaching these concentrations. They are the product of industrial chemistry, not geology.
What comes from the smokestacks: The upgrading facilities that process raw bitumen into synthetic crude oil release nitrogen oxides, sulfur dioxide, volatile organic compounds, and fine particulate matter. The 2024 Environment and Climate Change Canada and Yale University study found these emissions are 20 to 64 times higher than industry reports. These airborne pollutants settle into snowpack, wash into tributaries with spring melt, and accumulate in the watershed. None of this existed before the first mine opened in 1967.
The “it’s natural” argument is not science. It’s strategy.
The Science Builds: 2009–2013
What follows is a period in which independent scientists — working outside the industry-funded RAMP program — produce some of the most damning environmental research in Canadian history. Government and industry largely ignore it.
2009 — Dr. David Schindler and colleagues, published in the Proceedings of the National Academy of Sciences (PNAS): Oil sands development is contributing polycyclic aromatic compounds to the Athabasca River and its tributaries at concentrations that are likely toxic to fish embryos. Dissolved PAC concentrations in tributaries downstream of oil sands development are more than 20 times higher than upstream. Spring snowmelt is identified as a major pathway for contaminants reaching the river. The industry’s own monitoring program, RAMP, has not detected these patterns. The researchers call for “major changes” to how environmental impacts are monitored.
2010 — Kelly, Schindler et al., PNAS: The oil sands industry releases 13 elements classified as priority pollutants under the U.S. EPA’s Clean Water Act — including mercury, nickel, cadmium, copper, lead and zinc — into the Athabasca River and its watershed via both air and water. Concentrations of these pollutants in the snowpack near oil sands developments are significantly higher than at remote sites. In the Athabasca River downstream of development, concentrations of all 13 priority pollutants are greater than upstream. Concentrations of some pollutants at a site in Lake Athabasca near Fort Chipewyan exceed those found upstream of development. Canadian and Alberta guidelines for the protection of aquatic life are exceeded for seven of these pollutants in melted snow and water collected near or downstream of development.
This is the first peer-reviewed independent study to demonstrate that oil sands emissions are reaching Lake Athabasca — where Fort Chipewyan draws its drinking water.
2013 — Kurek et al., PNAS: Lake sediment cores from lakes surrounding Fort McMurray show that levels of polycyclic aromatic hydrocarbons began rising in the 1960s and 1970s — when oil sands development began — and have been climbing since. Elevated PAH levels are found in lakes as far as 90 kilometres from the mines. The researchers describe this as a warning of “possible future problems if PAH inputs continue to climb in tandem with oil sands production.”
The Food Becomes Unsafe: 2013–2014
2013: Alberta Health issues a consumption advisory for gull and tern eggs in the Lake Athabasca area after finding they contain high levels of mercury.
2014: The Athabasca Chipewyan First Nation and Mikisew Cree First Nation commission University of Manitoba environmental scientist Dr. Stéphane McLachlan to conduct an independent study of traditional foods. His findings are the first to directly test the flesh and organs of animals the community eats.
The results: elevated levels of arsenic, mercury and polycyclic aromatic hydrocarbons in the flesh of moose, ducks and muskrats. Arsenic and mercury levels in muskrat, duck and moose are high enough to be of concern for children. Selenium levels are high enough to be of concern for both children and adults across all wildlife species tested. Cancer rates in the study’s community participants are correlated with both employment in the oil sands and consumption of traditional foods — particularly fish.
The study notes that exposure levels are not high enough to be of immediate concern for most adults — only because many people have already stopped eating as much traditional food out of fear. The community’s diet has been changed by fear of its own land. That loss is not recorded in any cancer registry.
The study’s lead researcher is blunt: “Industry is expediting that transition to store-bought foods in Fort Chipewyan because people are concerned about the quality of traditional foods in a way they wouldn’t be in other parts of northern Canada.”
The Sickness Continues, Undocumented: 2014–2022
Through this period, the cancer cases keep accumulating. People keep leaving the community for treatment and disappearing from local statistics. Children are diagnosed. Rare cancers cluster in a community of roughly 1,000 people at rates that defy normal probability. Independent physicians and researchers continue to raise concerns.
The government-sponsored monitoring continues. The industry continues to expand. The tailings ponds keep growing — they now hold 1.4 trillion litres of toxic wastewater, covering an area larger than the city of Vancouver.
The community keeps asking for a comprehensive, independent, government-funded health study. They are told it is coming. It does not come.
2022: Imperial Oil discovers that its Kearl Mine tailings pond has been seeping — and says nothing. The leak continues for nine months. People in Fort Chipewyan, 250 kilometres downstream, continue to drink the water, hunt the animals, eat the fish.
The Spill Heard Round the World: 2023
In February 2023, the community learns what Imperial Oil has known for nine months: 5.3 million litres of contaminated wastewater — a mixture of bitumen, heavy metals, naphthenic acids and other toxic compounds — have been seeping from the Kearl Mine into the surrounding environment, eventually draining toward the Athabasca River system.
The fine: $50,000.
ACFN Chief Allan Adam calls it what it is: an environmental catastrophe that was covered up. Premier Danielle Smith dismisses it, claiming the release had no effect on local waterways or wildlife.
In April of the same year, a separate incident: approximately 6 million litres of water spill from a Suncor settling pond into the Athabasca River.
Both incidents produce the same response from Alberta: cleanup is underway, no confirmed impacts to wildlife or waterways, monitoring continues.
The Air Is Worse Than Anyone Said: 2024
A landmark study by researchers from Environment and Climate Change Canada and Yale University finds that oil sands operations are emitting between 20 and 64 times more air pollution than industry has ever reported to regulators. The discrepancy is not a measurement rounding error. It is a systematic undercount of emissions from smokestacks, upgrading facilities, tailings ponds and industrial machinery — the same sources that have been depositing contaminants onto snowpack, into tributaries, and ultimately into the Athabasca River watershed for six decades.
The researchers use aircraft-based sensors to take real-time measurements — bypassing the “bottom-up” estimation methods companies use to self-report emissions, and which this study demonstrates are wildly inaccurate.
The findings are published. Alberta continues to approve expansion.
The Community Stops Waiting: 2026
In April 2026, the Mikisew Cree First Nation announces the findings of a health study they commissioned and funded themselves — because the federal government’s promised $12 million study was to be spread over ten years, and ten years is too long when people are dying now.
The findings: cancer rates in Fort Chipewyan are at least 25 percent above the provincial average. Since 1993, 149 documented cases among Mikisew members alone. Twenty-four different types of cancer. Fourteen members diagnosed with multiple cancers. The rate is worsening decade by decade.
Chief Billy-Joe Tuccaro estimates the real number is closer to 250 to 300 — because people who leave the community for treatment are no longer counted in local data.
Alberta responds within hours: within normal ranges, no causal link, safe to drink.
It is the same answer Alberta has given since 2006. Since 2009. Since 2014. Since 2022. Since 2023.
The answer hasn’t changed because the industry hasn’t changed. The tailings have not stopped seeping. The smokestacks have not stopped releasing. The river hasn’t stopped flowing north through Fort Chipewyan and into the territories beyond.
What the Science Shows and What It Doesn’t
It is important to be precise here, because precision is what industry and government exploit when they want to avoid accountability.
What the peer-reviewed science has established: oil sands development deposits priority pollutants — including mercury, arsenic, cadmium, lead, nickel and PAHs — into the Athabasca River and its tributaries via both air and water. This has been demonstrated by multiple independent studies, including two landmark papers in the Proceedings of the National Academy of Sciences. These pollutants reach Lake Athabasca, where Fort Chipewyan draws its drinking water. They accumulate in the flesh and organs of animals the community eats. Cancer rates in Fort Chipewyan are elevated above provincial and expected averages — confirmed by the Alberta Cancer Board itself in 2009 and by the community’s own study in 2026. Air emissions from oil sands operations are 20 to 64 times higher than reported.
What hasn’t been formally established: a direct, proven causal link between oil sands pollution and the specific cancers in Fort Chipewyan has not been demonstrated in peer-reviewed science. This is not because the link doesn’t exist. It’s because no government has ever funded or completed the comprehensive, longitudinal, community-specific health study that would be required to establish it. The studies that have been promised, delayed, and defunded over thirty years are themselves the evidence of a system that doesn’t want the answer.
Dr. O’Connor put it plainly: “Why would successive independent and government assessments suggest the need for comprehensive studies? Why is Alberta still giving the same answer in 2026 that it gave in 2006? Why does a province that monitors 40 air quality and 100 water monitoring stations still not know what is making these people sick?”
The community has its own answer. They’ve had it for decades.
What Comes Next
The Mikisew Cree have made clear what happens if governments continue to do nothing: blockades. Treaty rights invoked. Oil sands operations in the Wood Buffalo area shut down.
Premier Smith is simultaneously pursuing a plan to allow oil sands companies to discharge treated toxic tailings directly into the Athabasca River — the same river system already carrying the pollutants documented in thirty years of independent research. The technology for treating the tailings has not been proven safe. The committee that recommended it was dominated by industry. One Indigenous voice sat at that table.
Downstream, the Dene Nation, the Inuvialuit, the Northwest Territory Métis Nation — all the peoples whose water comes from the same watershed — watch and wait.
And in Fort Chipewyan, they keep counting. They keep burying. They keep showing up in Ottawa with studies and evidence and grief.
The science has spoken for decades. The community has spoken for decades. The only thing that has changed is that the evidence is now impossible to dismiss — and the governments and industry that would benefit from dismissing it are trying anyway.
That, too, is part of the record now.
Brandi Morin is an award-winning Cree and Iroquois journalist from Treaty 6 territory in Alberta. Her documentary Killer Water, investigating the oil sands’ impact on Fort Chipewyan, won the 2024 Canadian Hillman Prize.
Sources:
Community Health Studies
• Mikisew Cree First Nation “Our Health, Our Future” study, April 2026 — mikisewcree.ca
• McLachlan, S. “Environmental and Human Health Implications of the Athabasca Oil Sands,” University of Manitoba, 2014
• Timoney, K. “A Study of Water and Sediment Quality as Related to Public Health Issues, Fort Chipewyan, Alberta,” Nunee Health Authority, 2007
• Alberta Cancer Board, cancer rate confirmation, 2009
Peer-Reviewed Science
• Kelly, E.N. et al. “Oil sands development contributes polycyclic aromatic compounds to the Athabasca River and its tributaries,” PNAS, 2009
• Kelly, E.N. et al. “Oil sands development contributes elements toxic at low concentrations to the Athabasca River and its tributaries,” PNAS, 2010
• Kurek, J. et al. “Legacy of a half century of Athabasca oil sands development recorded by lake ecosystems,” PNAS, 2013
• Environment and Climate Change Canada/Yale University air pollution study, 2024 — Mongabay
Journalism and Reporting
• The Narwhal, multiple investigations — thenarwhal.ca
• IndigiNews/Ricochet/The Real News Network — Brandi Morin reporting
• CBC News, multiple reports — cbc.ca
• Undark, “The Deep Toll of Tar Sands on Canada’s Indigenous People,” 2021
• Mongabay, Fort Chipewyan/Kearl spill coverage, 2024
Government and Institutional
• Canada’s National Observer, April 2026
• Federal government $12 million health study announcement, 2024 — canada.ca
• Alberta government Fort Chipewyan Working Group — alberta.ca
• Commission for Environmental Cooperation, Alberta Tailings Pond II Factual Record, 2020
• Minority Rights Group International, 2023
Brandi Morin is an award-winning Cree and Iroquois journalist from Treaty 6 territory in Alberta. Her documentary Killer Water, investigating the oil sands’ impact on Fort Chipewyan, won the 2024 Canadian Hillman Prize.
What an incredible, devastating, crucial record you’ve built. This is a tough read, but what made me sob was the fine of 50,000 dollars. Such a tiny pittance compared to the devastation Suncor and Alberta politicians have wrought on the communities affected. I’m so sad that I look forward reading about the badassery that residents will surely enact to enact to block/fight/battle this insanity.
I really hope something can be done to help these people