|
Quantity:215 MLD Project Cost:Rs.1295 Crore
(2010-11 Announcement Scheme of Honourable Deputy Chief Minister)
 PREFATORY:
Vellore District comprises One Corporation (comprising of erstwhile 2 Municipalities, 6 Town Panchayats and 109 Habitations in 9 Village Panchayats), 11 Municipalities, 16 Town Panchayats and 5,688 Rural Habitations in 20 Panchayat Unions.
PRESENT WATER SUPPLY SCENARIO:
Palar and Ponnaiar are the two major Rivers traversing through Vellore District. Even though, they are non-perennial, the sub surface water potential fulfills the drinking water requirements. The entire Vellore District mainly depends on the above source for their drinking water needs. 84 Head Works are located in River Palar and 29 Head Works are located in Ponnaiar River.
The average rain fall in this District is in the order of 753.4 mm and that too has been scanty for the past 10 years. The frequent failure of monsoon for the past one decade and sand mining in the River beds has resulted in depletion of water table and reduction of the storage capacity of the Rivers. Moreover, the discharge of Tannery effluents and discharge of sewage and sullage let out from the Urban Towns located on either side of the Rivers has polluted the water alarmingly. This contamination has induced serious health hazards like Asthma, Chromium Ulcers and Skin diseases.
NEED FOR THE PROPOSAL:
Due to discharge of Tannery effluent, sewage and sullage into Palar River from urban areas, the existing Water Supply schemes to Urban Towns and Rural Habitations are adversely affected. Apart from this, a part of the District on the western side is also affected by high fluoride content in the ground water. As such, the water supply status of the District is not satisfactory even though River Palar and Ponnai, which are the main source for the water supply schemes, exist in this District. These Rivers are also not perennial.
In view of the above critical situation and also considering the public demand, the Hon’ble Deputy Chief Minister had announced in the Assembly during Budget session for the year 2008-2009 that the “Investigation works will be taken up during the year 2008 for CWSIS to Vellore Corporation and other Local Bodies in Vellore District with River Cauvery as source to be tapped from Mettur Dam”. In the Budget for the current year 2010-2011, the Hon’ble Deputy Chief Minister also announced that the above Mega Scheme will be taken up for execution by arranging a suitable fund tie-up.
Accordingly, TWAD Board took up Investigation works, to provide a Combined Water Supply Scheme with River Cauvery as source to Vellore Corporation & other local bodies, in Vellore District, as a permanent remedial solution.
PROJECT BENEFICIARIES:
Sl. No. |
Corporation |
Sl. No. |
Municipalities |
Sl. No. |
Town Panchayats |
1. |
Vellore Corporation:
(3 Municipalities viz., Vellore, Sathuvachari, Tharapadavedu, 6 Town Panchayats viz., Thorapadi, Allapuram, Shenbakkam, Kalinjur, Gandhi Nagar, Katpadi & 109 rural habitations) |
1. |
Thirupathur |
1. |
Natrampalli |
2. |
Jolarpet |
2. |
Udhayendiram |
3. |
Vaniyampadi |
3. |
Alangayam |
4. |
Ambur |
4. |
Odugathur |
5. |
Pernampet |
5. |
Pallikonda |
6. |
Gudiyatham |
Rural Habitations |
7. |
Melvisharam |
944 habitations |
8. |
Arcot |
|
9. |
Ranipettai |
|
10. |
Wallajah |
|
11. |
Arakkonam |
|
POPULATION & REQUIREMENT:
The population projected to 18.68 Lakhs, 21.50 Lakhs & 24.46 Lakhs for the present (2012), intermediate (2027) & ultimate (2042) stages respectively.
Demand calculated at 135 lpcd for Vellore Corporation, 90 lpcd for Municipalities, 70 lpcd for Town Panchayats and 40 lpcd for rural habitations.
The net demand now works out to 148 mld, 181 mld & 215 mld for the present (2012), intermediate (2027) & ultimate (2042) stages respectively.
DESCRIPTION OF THE PROPOSAL:
It is proposed to tap the project ultimate requirement by providing off-take well arrangements in River Cauvery near Thottilpatti Village, down stream of Mettur Dam & upstream of Chekkanur Barrage. Collected Raw Water will be pumped (23 hours) to the Treatment Plant of 181mld capacity, located at Thottilpatti Village at Head works site owned by TWAD Board (10.50 acres).
Treated water will be pumped for a total length of 80.70 km, through relay pumping through 3 Booster stations viz Komburankadu, Palakkanur & Muthampatti to a Master Balancing GLSR at Kadathur Ridge point.
From the MBGLSR, water will be gravitated for a total length of 228 km, to the beneficiaries up to Arakkonam, through sumps for urban beneficiaries & group sumps for rural habitations.
Water will be distributed to the beneficiaries by utilizing existing & proposed infrastructures.
COST OF PROPOSAL:
The cost of this scheme is Rs.1295.00 Crore. Annual Maintenance Cost is Rs.58.20 Crore.
PRESENT STAGE OF PROPOSAL:
 Government have accorded Administrative Sanction for Rs.1295 Crore for the above Scheme, vide G.O.Ms.No.319(WS1)MA&WS Dept. Dated.31.12.2010.
Package
- I
. Work Order issued
by Chief Engineer, Vellore one 30.12.2011 to M/S. Larsen & Toubro Ltd.,
ECC, Chennai. Target for completion - 07/2014
Package
- II
Work Order
issued by Chief Engineer, Vellore one 30.12.2011 to M/S. Larsen & Toubro
Ltd., ECC, Chennai. Target for completion - 07/2014.
Package
- III
Tender under
finalisation.
VELLORE CWSS –SALIENT DETAILS
Beneficiary District |
Vellore |
Beneficiaries |
Corporation -1, (3 Municipalities viz., Vellore, Sathuvachari, Tharapadavedu; 6 Town Panchayats viz., Thorapadi, Allapuram, Shenbakkam, Kalinjur, Gandhi Nagar, Katpadi & 109 habitations)
Municipalities- 11, (Thirupathur, Jolarpet, Vaniyampadi, Ambur, Pernampet, Gudiyatham, Melvisharam, Arcot, Ranipettai, Wallajah Arakkonam)
Town Panchayats - 5, (Natrampalli, Odeyendiram, Alangayam, Odugathur, Pallikonda)
Rural Habitations – 944. |
Population & Requirement |
Present (2012) |
Inter (2027) |
Ultimate (2042) |
Population |
18.68 Lakh |
21.50 Lakh |
24.46 Lakh |
Requirement (Corporation @ 135 lpcd, Municipalities @ 90 lpcd, Town Panchayats @ 70 lpcd and Rural habitations @ 40 lpcd) |
148 mld |
181 mld |
215 mld |
Source |
River Cauvery near Thottilpatti Village, down stream of Mettur Dam, upstream of Chekkanur Barrage. |
Off-take well with pump house |
50m x 12m x 20 m |
Raw water pumpset |
150 HP x 21860 lpm x 23 m – 6 Nos. (3 Nos. stand bye) |
Raw water pumping main |
1700 mm M.S. pipe - 100m |
Treatment Plant |
181 mld |
Clear Water Sump |
2Nos. x 45 LL capacity (60 minutes detention) |
Pump set (23 hours) |
455 HP Turbine x 20872 lpm x 74 m (6 Nos.+3 stand bye) |
Pumping Main |
1500 mm M.S. pipe - 7150m |
Booster Station I (60 minutes detention)(LS 7150m) |
2Nos. x 45 LL capacity - Komburankadu
Pumpset: 670 HP Turbine x20872 lpm x 110 m.(6Nos.+3 stand bye)
Pumping Main: 1500 mm M.S. pipe - 7200m |
Booster Station II (60 minutes detention)
(LS 14350m) |
2Nos. x 45 LL capacity – Palakkanur
Pumpset: 625HP Turbine x 20872 lpm x 102 m.(6Nos.+3 stand bye)
Pumping Main: 1500 mm M.S. pipe - 44160m |
Booster Station III (60 minutes detention)
(LS 58510m) |
2Nos. x 45 LL capacity -- Muthampatti
Pumpset: 485HP Turbine x 20872 lpm x 79 m.(6Nos.+3 stand bye)
Pumping Main: 1500 mm M.S. pipe - 22190 m |
Master Balancing GLSR (60 minutes det.)(@ LS 80700m) |
2Nos. x 45 LL capacity – Kadathur
Ground Level; 466.58m (Ridge:475.73) |
Break Pressure Tanks (3Nos.- 10 minutes detention) |
12.20 LL capacity @ LS 165965 m
8.90 LL capacity @ LS 212800 m &
0.60 LL capacity @ LS 260400 m |
Tail end sump |
4.75 LL capacity @ LS 308630m @ Arakkonam(GL: 89.120m) |
Gravity Main |
1600 mm to 700 mm MS pipes - 161.30 Km
600 mm to 200 mm DI pipes – 66.63 Km |
Sump at Beneficiaries |
Capacity varying from 0.10 LL to 57.00 LL – 151 Nos. |
Branch Gravity Main to sump |
700 mm MS pipes – 1.58 km
600 mm to 100 mm DI pipes – 159.42 Km (24 Branches from GM) |
Br.Pumping from sump to OHT |
500 mm to 100 mm DI pipes – 56.56 km
200 mm to 50 mm PVC pipes – 610.47 km |
New OHT |
35 Nos. (Urban – 31 Nos & Rural – 4 Nos) |
New D’system |
313.06 km |
Installation Cost |
Rs.1295.00 crore |
Annual Maintenance |
Rs.58.20 crore |
Per Capita Cost |
Rs.6931 |
Cost per 1000 Litres |
Rs.25.13 |
Rural Component |
Rs.272.15 crore |
Urban Component |
Rs.1022.85 crore |
|