Water has reached halfway up the wheels of some parked cars. Photo / Katie Harris
Wellington Water reported crews were on site by 4.30pm and had isolated the broken main.
There was no loss of service to customers within the catchment area.
"To facilitate the repair of the network main traffic management is currently being put in place to make the site safe. Once this is complete the team will proceed to expose the main and make the repair," a spokesperson said.
On Monday, a wastewater pipe burst at the intersection of Victoria and Mercer Sts. The break was in a 300mm diameter cast iron pipe that was built in the early 1900s.
Mercer St is closed and Victoria St and Willeston St have reduced lanes.
The walkway around the council building has been temporarily removed.
Businesses and people in the area have been asked to conserve as much water as they can until the repairs are completed.