Picture: @JHBWater

Johannesburg - Water supplies were expected to be fully restored around lunchtime on Thursday, following a burst pipe that left city's northern areas without water for three days. 

Joburg Water said engineers continued to work on what it called the "largest repair job in its history". 

''Reservoirs have been partially opened to charge the lines. This is done on a slow pace to avoid any further bursts. Some of the areas have already started to get water. We estimate that all affected areas should have water by 1 pm,'' said Joburg Water early Thursday. 

Affected areas include Sandton, Alexandra, Bryanston, Morningside and Linbro Park. Supply to high lying areas could take longer to restore, Joburg Water said. 

MCC for Environment and Infrastructure Services Nico de Jager said the pipe burst took place 35 metres deep at an unstable land site at Linbro Park landfill site.