Massive project to fix water leaks underway

BWSSB’s project in South Bangalore is surveying water leakage and fixing leaks and water thefts, to reduce the Unaccounted For Water by 40%.

40% of all the Cauvery water that gets pumped into the city – from a distance of about 140 km and to a height of 500m, at a cost of Rs 300 crores a year is said to be unaccounted for. This is either wasted as a result of leaks or is stolen or not recorded because of faulty meters, thus making it ‘Non-Revenue Water (NRW)’ or ‘Unaccounted For Water (UFW)’. BWSSB has woken up to this alarming reality and is trying to address a part of the problem through a project funded by the Japan Bank of International Co-operation (JICO).

BWSSB is implementing a Rs 153-crore project that started mid-2012. The project contracted out to L&T is scheduled to complete in June 2015, with extended O&M (Operations and Maintenance) support for three years thereafter, till 2018. Currently survey work is completed in a third of the areas where fixing of faulty meters has begun. In other areas, surveys are underway.

Flow and pressure management. Credit: www.niua.org

Venkata Raju, Chief Engineer, BWSSB shares that the project will cover an area of 52 sq.km. and will include the constituencies of Padmanabhanagar, Basavanagudi, Chamarajpet (a part of the area), Jayanagar, BTM Layout (includes Koramangala) and parts of Chickpet.

The 52 sq km is divided into ‘District Metered Areas’ (DMA) based on water pressures. Typically a single DMA will consist of 1000-3000 connections and the area is planned to be divided into 70-75 DMAs. BWSSB will go from house to house and inspect consumer meters and all known meters within the DMA will be marked for a pressure test. The pressure test will show up faulty meters and leaks based on the inflow and outflow pressures within a DMA. The project also includes detection of water theft and replacing old and non-performing pipes.

N S Mukunda, President of Citizen’s Action Forum, who has been actively pursuing water related issues in Bangalore feels that the objective of the project is to increase the revenue for BWSSB by identifying thefts and faulty meters.

Formation of hydraulically bound DMAs. Credit: www.niua.org

The project scope mentions the replacement of Ductile Iron (DI) pipes, Mild Steel (MS) pipes and PVC pipes. An L&T engineer (who does not wish to be named) says, “The old and non-performing water pipes are the ones that will be replaced”. He goes on to clarify that MS, DI and PVC pipes are used for long distance, high volume water connection pipes and the pipes in old areas like Basavanagudi, Girinagar, Jayanagar will be surveyed and replaced where found leaky/faulty. Galvanised Iron (GI) pipes used for house service connections will also be repaired and replaced where necessary, he said.

According to BWSSB, the current status of the project is that in nearly 25 DMAs the Pressure Zero Test (PZT) is complete based on which faulty meters and house service connection pipes in 12 of these DMAs have been fixed. PZT and faulty meters and house connections will be fixed in tandem, the repair/replacement of the larger pipes (DI, MS) pipes will be done only after the round of PZT tests are complete for all DMAs.

BWSSB’s pilot project to fix leaks was done in 2009. That project covered an area of 16 sq km (21 DMAs) that included 35,000 connections. The input water to the area was 84 MLD (Million Litres per Day). This project replaced nearly 19,000 consumer meters and 8644 house service connections. Close to 12,000 leaks were found and repaired. The project that cost about Rs 48 crores brought down the leakage in the area by 14 MLD. This amounts to savings of more than Rs 8 crores a year. The details are available here.

The objective of the current project in South Bangalore is to reduce the UFW from 40% to 16% at the end of three years.

Mukunda remains worried. “Even if water leaks are fixed, the need for water is only going to increase. The government moots large scale projects such as bringing water from Nethravati river that is 370 km from Bangalore which will amount to 50,000 crores (every possibility of this going up to 70,000 crores by the time the project gets approved and implemented) and other projects like ‘inter linking of rivers'” says Mukund. He dismisses such plans as not feasible since they involve costs that the public cannot afford. He feels the government should be looking at rainwater harvesting, rejuvenation of Arkavathy river and restoring lakes in Bangalore, but such projects get sidelined since it is tough to get a cut from projects that are simple and are low budget.

Comments:

  1. kumar says:

    In srinivagulu (Near Koramangala Sony world signal) many have illegally connected Kaveri connection to open well which I had complained many times to Koramangala BWSSB office but they never responded to it. If such useless officers are sitting in BWSSB then how they can detection of water theft

  2. ll kumar says:

    The leakage is right in your own backyard One can see how precious water is leaked at pumping stations and tanker filling stations.They clean the tankers with pure drinking water,Shame.A proverb in Tamil says,if you have lost your donkey look out for it in your own backyard!

  3. Muralidhar Rao says:

    Even as a Rs 48 cr leak-fixing job is under way here, BWSSB’s incompetence in going a tree & branch distribution system for the ongoing 500 MLD 4th stage is making for a leak-enhancing job of it. Perhaps, this will ensure another lucrative contract in another few years’ time, and cuts thereof to the interested parties. Great going!

  4. Mohammed Rafiq says:

    In the name of hygiene and cleanliness massive quantum of water is wasted in washing cars and automobiles, surroundings, watering plants and running water in common places. Will the elected representative and the concerned citizens come forward to sensitize the ordinary citizens in this madness of water wastage

Leave a Reply

Your email address will not be published. Required fields are marked *

Similar Story

How severe is the honking problem in Namma Bengaluru?

Noise pollution at traffic signals and busy roads is not just annoying; it can have health implications in the long term.

Car and two-wheeler horns are unrelated to vehicular motion. Yet, a closer look at our busy roads reveals a constant din caused by drivers honking relentlessly, even when unnecessary. Once serene residential areas now reverberate with the cacophony of different horn sounds. The noise at traffic signals and bottlenecks is hitting deafening levels of around 90 decibels (dB), and vehicle drivers ignore 'silence zones' near schools and hospitals. People continue to have multi-toned and high-pressure horns, which they use out of habit, while many vehicles have their silencers modified.  Numerous articles and awareness campaigns in Bengaluru and other cities have focussed…

Similar Story

City Buzz: One more stampede at Maha Kumbh | GRAP 3 in Delhi…and more

Other news: Guillain-Barré Syndrome cases in Pune, Amaravathi ORR work on and no plans to outsource free breakfast scheme in Chennai

Poor crowd management blamed for Maha Kumbh stampede The Maha Kumbh Mela stampede in the early hours of January 29th in Prayagraj led to at least 30 deaths and 60 people being injured. Large crowds flocked to the Sangam area of the Maha Kumbh, on Mauni Amavasya, a day considered auspicious for the ritual dip. There were about 10 crore pilgrims.  Just a few hours later, another stampede-like situation three kilometres away at Jhusi resulted in deaths of at least seven, including a child, said police sources. Strangely, the authorities remained silent about this incident.  Uttar Pradesh authorities drafted guidelines on…