The civic body has decommissioned the pipeline running below Sanjeevani building in Govandi and has diverted water supply to the other line that was laid.
On Monday, one resident had drowned and 14 others were injured after the 40-year-old pipeline burst and flooded the ground floor of the building.
Civic officials admitted that water was released through the pipeline when the burst took place.
On Wednesday, HT had reported how a part of the pipeline was also running below a school, Plus Point Merit High School.
“After the Govandi incident, we have permanently decommissioned the water supply through the 40-year-old pipeline by fixing covers. The supply has now been diverted,” said Rajiv Jalota, additional municipal commissioner, adding that they were waiting for the inquiry reports to determine the exact cause of the incident.
On Tuesday, a four-member committee was appointed by the civic administration to look into why the pipeline underneath the building was active when an alternative water supply route had been laid in 2008.
According to civic rules, an active water pipeline cannot run beneath a building, and if a building has to be constructed above a pipeline, water supply through it must be stopped.
The Slum Rehabilitation Authority (SRA), the regulatory body under which the building was constructed, also called for a team to be appointed to examine the structural stability of the eight-storey building.