The first images have been released of a 36-inch pipe bursting, leaving about 250,000 people without water for hours.
Scottish Water customers at around 100,000 properties in Glasgow and East Dunbartonshire were hit by a burst pipeline in Milngavie on Tuesday.
The incident occurred on Auchenhowie Road, where the 36-inch main line is located, and closures in the area remain in place.
Major excavation work is now underway to restore the main water main, leaving Glasgow Road and Auchenhowie Road closed for approximately two weeks.
The incident affected performance attendees at Lewis Capaldi’s OVO Hydro concert on Tuesday evening, with the venue forced to close toilets due to water shortages.
Georgina Reid, Corporate Affairs Manager for the west of Scottish Water, said: “Our first priority was to secure the site and restore the water supply to the 100,000 affected properties in various parts of Glasgow.
“This is a very busy commuter route and the damage is significant.
“Our teams will be working through the night tonight and our priority now is to complete the repairs and reopen the roads as soon as possible.
“Drivers should expect some delays, especially during peak times, and follow the diversions.
“Some local residents may experience a little more noise this evening and tonight and we sincerely apologize for the inconvenience and disturbance this may cause.”
Customers have been warned that while supplies are being restored, some may experience discolorations in their water.
Scottish Water advises that this is normal and people should run their kitchen faucet with cold water at reduced pressure until it runs clear.
If white water comes out of the tap, this is air in the water supply after the interruption and will settle within 24 to 48 hours.