Montreal Quebec - Service on the green line was restored Saturday morning after multiple disruptions on the Metro over a 24 hour period caused chaos for public transit users.
 
The Societe de transport de Montreal (STM) said in an update on social media at 06:30 that the trains were back up and running between Angrignon and Berri-UQAM stations.
 
Service was interrupted at 10:30, Friday.
 
The cause of the interruption was an early-morning water main break in Westmount.
 
The pipe burst on Maisonneuve Boulevard, between Elm and Greene avenues near Lionel-Groulx station, sending gushing water underground and onto the Metro tracks, the STM said.
 
"Emergency action was taken to try to limit water infiltration and pump out as much as possible, but the problem persists, mainly because of the high flow rate from the aqueduct network," the STM said in a notice on its website Friday evening.
 
Hordes of people were forced above ground to catch a shuttle bus.
 
Joe Lofaro.