Police received a report of flooding and an unoccupied car that may have crashed on Boundary Road shortly after 10.15pm on Friday. Watercare were notified and found the pipe had burst outside 50 Boundary Road at 11pm.
Watercare excavated the pipe and isolated the damaged section by 2.10am on Saturday, said the utility's Rex Chou. Supply is expected to be restored to all affected properties late on Sunday.
The road between Dundale Avenue and Kimber Hall Avenue has been closed, with emergency traffic management using a stop/go system allowing vehicles to still use the road.
Hundreds of households between Donovan Street and Dundale Avenue are affected. The cause of the burst is still being investigated.
"Watercare's priority was restoring the water supply," Chou said.