Residents in an Etobicoke neighbourhood woke up to find their street had been turned into a river on Sunday morning.
The water main break flooded Martin Grove Road around 7:30 a.m., between Saralou Court and Rathburn Road.
The road is currently closed as crews fix the break.
It is not clear yet if any homes have been flooded.
Police also say a sink hole has formed in the area.