"Aamjiwnaang First Nation has spent decades battling Sarnia’s industrial emissions. Documents show the Ontario government knew stricter pollution rules were needed long before it acted"
"Last spring, Aamjiwnaang First Nation hit a breaking point.
For weeks, enormous amounts of benzene had been leaking from a plastics plant across the road from the southwestern Ontario community’s band office. Long-term exposure to low levels of benzene causes cancers like leukemia. If you breathe in a lot of it at once, the carcinogen can also make you feel very sick, very quickly — and people in Aamjiwnaang were breathing in levels of benzene hundreds of times higher than what health-based guidelines recommend.
Sore throats, nausea, dizziness and headaches struck members of the Anishinaabe community, located alongside a cluster of petroleum and petrochemical plants in an area of Sarnia, Ont., known as Chemical Valley. A few wound up in the emergency room due to “noxious exposure,” the local hospital said at the time. The nation sent staff home from the band office and warned families to stay away from a playground. On April 25, 2024, the nation triggered a state of emergency, a watershed moment that made headlines across the country."
Emma McIntosh reports for The Narwhal June 25, 2025, with photography by Carlos Osorio.
Advertisement 
