Toronto Public Health officially determined that a TTC cooling tower is the main origin of a Legionnaires' disease outbreak in Toronto. Local officials issued a recent statement establishing the cooling tower as the initial source of the regional illness outbreak.

Several media organizations including CBC, Global News, Toronto Star, and SSBCrack shared the confirmation from public health officials. The public update specifically named the TTC cooling tower as the underlying origin of the bacterial cases in Toronto. Public health officials stated that the TTC cooling tower remains the known origin of the disease cases.