Although Monday’s water cut imposed in parts of the Island city, thanks to leakages detected on the Tansa (east) pipeline, will be restored soon, but here is a bigger reason to worry.
Two major pipelines, Tansa (east) and Tansa (west) are crumbling and the civic body’s still doesn’t have a solution to this problem.
Even though Tansa pipelines outside the city limits are being replaced, albeit at a snail’s pace, the civic body still doesn’t have any plan to replace those that lie within the city.
Both these pipelines are about 120 years old, making these lines vulnerable to corrosion, resulting in leakages and pipeline bursts, which lead to frequent water cuts.
Currently, these pipelines run between Mahim and Nana Chowk and supply water in areas such as Colaba, Fort, Bhuleshwar, Malabar Hill, Grant Road, Kherwadi, Girgaon, Walkeshwar, Dadar, Worli, Prabhadevi, Chinchpokli, Parel, Mahim and Matunga.
Ramesh Bambale, civic hydraulic engineer, said, “Replacing these pipelines is difficult, owing to their size. Taking such huge trenches on roads to replace them, which are already narrow and choc-a-bloc with traffic, is very difficult.”
Bambale said that the civic body is scouting for a technology to strengthen and rehabilitate pipelines without having to replace them altogether.
A civic official said, “The technology is called pipe-in-a-pipe technology, which enables us to insert a new pipe into the existing pipe without removing the existing pipe. However, India still doesn’t have companies which specialise in this technology and scouting for firms for this job is difficult.”
The civic body, meanwhile, is hoping that the Marol-Maroshi to Ruparel College tunnel, which will be commissioner either in late 2012 or early 2013, will considerably ease water woes in the Island city. This tunnel will be joined with the existing Ruparel to Malabar Hill tunnel.
However, this will just be a partial solution to water problems in areas such as Dadar, Worli, Prabhadevi, Chinchpokli, Parel, Mahim and Matunga as water will continue to get water through these Tansa pipelines.
“Water supply in Malabar Hill, Colaba, Bhuleshwar and Grant Road will improve after the tunnel is operational. However, both G South and G North will continue to get water through these crumbling pipelines, which will be a cause of worry,” said a civic official.