In the Cauvery Phase II, stage IV project, 500 MLD (million litres per day) will be supplied to the entire city. This will be divided among ten reservoirs, which will supply water to areas surrounding them. The project is expected to be complete in March 2012. Reservoir construction work is in progress and about 50% of pipeline work is complete, say BWSSB officials.
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Reservoirs are being built in GKVK campus in Vidyaranyapura (which will be allocated 151 MLD), Hegenahalli reservoir near Peenya (98 MLD), Jambu Savari Gudda in JP Nagar (27 MLD), Central Jail in Bilekahalli ward (43 MLD), Hoodi, off of Whitefield (30 MLD), Aero Engine Reservoir (AER) in New Thippasandra (75 MLD), OMBR (47 MLD), Machili Betta Reservoir (MBR) in Maruthi Seva Nagar (14 MLD) and HBR reservoir (15 MLD). A new reservoir is being planned in Ramamurthy Nagar, but the allocation for this has not been decided. This addition has been made due to demand, says Narayan, Chief Engineer (Cauvery Project).
Construction of seven reservoirs is directly under the Cauvery project; rest will be built by other departments of BWSSB and integrated, says G M Shivaraju, Executive Engineer (Cauvery). "Minor changes will be made in allocation according to demand and feasibility," he says.
Water supply route
On reaching the city, waterline from Tataguni pumping station will be diverted in two directions – west and east. In the west side, water will be supplied to GKVK and Hegenahalli reservoirs. Hegenahalli reservoir already draws water from Cauvery phase I. After phase II completion, its phase I line will be diverted to a new reservoir being built in Uttarahalli. Uttarahalli reservoir will supply 40 MLD water to areas such as Poornaprajna layout, Kadirenahalli etc.
In the east side, water will be first pumped to Jambu Savari Gudda reservoir. From here, water will flow by the force of gravity to Central Jail, Hoodi and AER reservoirs. One line will go to B Narayanapura pumping station near KR Puram. This station will pump water to Ramamurthy Nagar and OMBR layout reservoirs. From OMBR, water will flow to MBR and HBR reservoirs by gravity.
So who is going to get the new water next year?
Here are details of allocation from the reservoirs to surrounding areas. This information was obtained from BBMP Corporators.
GKVK reservoir: Of 151 MLD, 36 MLD will go towards Airport, industries etc. The remaining 115 MLD will be supplied to GKVK, other areas in Vidyaranyapura ward and parts of Bommasandra.
Hegenahalli (98 MLD): Domestic supply lines will go to Hegenahalli, Sunkadkatte, Vijnana Nagara, Peenya etc. One line will to the international airport. Some lines will go to Peenya and other industrial areas.
Jambu Savari Gudda (27 MLD): Areas include HSR layout, part of BTM layout, JP Nagar 5th and 6th phase etc. "All areas that need water have been covered, there are no issues. All decisions were made by BWSSB," says JP Nagar Corporator N Chandrashekhar Raju.
Central Jail (43 MLD): Bilekahalli, Bommanahalli, Electronic City companies, etc.
Hoodi (30 MLD): Four areas – Ayyappa Nagar, Sadaramangala, Kodigehalli and Hoodi – are going to be getting water. These are old CMC areas. "Water supply is needed in other areas also. I’ve spoken to BWSSB officials and ministers about this, but they said that it would take time to supply to these areas. They will have to depend on borewell water for now," says Hoodi Corporator B A Basavaraju.
Aero Engine Reservoir (75 MLD): Will supply to New Thippasandra, CV Raman Nagar, Benniganahalli and Jeevan Bheema Nagar. BEML located in New Thippasandra ward will also get water.
OMBR Layout (47 MLD): Will go to CV Raman Nagar, Banaswadi, Ramamurthy Nagar etc.
Machili Betta (14 MLD): located in Maruthi Seva Nagar ward. Will supply to Kammanahalli, Maruthi Seva Nagar etc
HBR Layout (15 MLD): Will go to HBR layout, HRBR layout, Kammanahalli etc. ⊕