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Toronto city staff refuse to work at 2 indoor pools due to high humidity

Click to play video: 'Southwestern Ontario blasted with another heat wave'
Southwestern Ontario blasted with another heat wave
WATCH: Southwestern Ontario blasted with another heat wave – Jul 28, 2025

City staff at two indoor pools in Toronto are refusing to work citing high humidity levels, according to the union.

CUPE Local 79, the union representing City of Toronto’s inside workers, said indoor humidex readings at two pools — Main Square and Birchmount — have been recorded between 40 C and 45 C this week.

The union said that threshold requires increased staffing levels, and the presence of medics when humidex reaches over 45 C under health and safety policies.

“The extreme heat conditions stem from malfunctioning Dectron units, which regulate humidity in indoor pool environments,” the union said.

“As a result, workers are exercising their right to refuse unsafe work under Ontario’s Occupational Health and Safety Act.”

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On Tuesday, the City temporarily closed Birchmount Pool. The pool remains closed as of Wednesday morning.

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A notice on the door early Wednesday read: “The pool is closed due to mechanical issues.”

The union told Global News Birchmount Pool will remain closed on Wednesday but that Main Square is reopening.

“This latest series of work refusals follows similar incidents at the City’s outdoor pools, where staff were also exposed to dangerously high humidex levels without proper preparations or supports to prevent heat-related injuries,” the union said.

Last month, Mayor Olivia Chow apologized for the closure of some city pools during that heat wave. The City of Toronto had temporarily closed some outdoor pools at the end of June due to humidex values being higher that 45 C.

In a statement to Global News, Mayor Chow’s office said it has reached out to the union “and have already agreed to work with them to resolve their specific concerns and ensure the indoor pools stay open.”

“Torontonians need places to keep cool during heat waves,” Chow’s office said. “Pools need to be open in safe condition for both residents and workers.”

Click to play video: 'Mayor Olivia Chow issues apology for city’s heatwave response'
Mayor Olivia Chow issues apology for city’s heatwave response

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