Major Water Supply Schemes 235

Sunday , 28th February 2021

Schemes
Providing CWSS to 698 Rural Habitations in Nangava...

Schemes

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Providing CWSS to 698 Rural Habitations in Nangavalli and Mecheri Unions, with Bulk Provision for 6 Town Panchayats in Salem District.

Quantity to be drawn	:	23.45 mld
Source	:	Cauvery river @ Mettur
Mettur	:	Offtake Well (23.45 mld)

Estimate cost	:	Rs.158.64 Crore
AM cost	:	Rs.6.90 Crore
Per Capita cost	:	Rs.5309/-
Cost/KL	:	Rs.21.66

Fund tie up:

i) For Town Panchayats – 80:20 ii) For rural habitations – NRDWP/SMS

Prefatory:

Nangavalli and Mecheri unions are located in the Northwestern part of Salem district. The main occupation of the people is agriculture. There are 326 habitations in Nangavalli union and 372 habitations in Mecheri union.

The Honorable Chief Minister of Tamil Nadu has announced that Drinking water facilities will be provided for Nangavalli and Mecheri Blocks in Salem District during the Collectors Conference held at Chennai on 17.12.2012 vide announcement No 168 with Cauvery River as source, will be taken up for investigation during 2013-14.Accordingly a CWSS has been proposed to provide Cauvery River water to 698 rural Habitations in along with bulk Provision for 6 town panchayats in Nangavalli and Mecheri unions.

Scope of the Project:

it is proposed to cover the following beneficiaries in Salem District.

S.No	Urban Beneficiaries	Rural Beneficiaries
S.No	Urban Beneficiaries	Union	No. of Habs
	Town Panchayats- 6 Nos.	Nangavalli	326
1	Nangavalli	Mecheri	372
2	Mecheri
3	Veerakkal Pudur
4	P.N.Patty
5	Vanavasi
6	Jalakandapuram .
		TOTAL	698

Existing Water Supply Arrangements:

At present water supply is being provided to the habitations of Mecheri and Nangavalli unions from Kadayampatty CWSS, Irupali CWSS and Salem Attur CWSS in addition to the ground water sources (viz) Bore well hand pumps and major Power pump schemes. These schemes are now functioning in rural habitations which cannot cater the entire need of the population.

Population and Demand:

The intermediate (2025) and ultimate population (2035) of Nangavalli union is 98444 and 114965 and Mecheri union is 120272 and 135231. with base year as 2015. The demand has been arrived with a pro-rata supply of 55 lpcd after deducting the existing level of supply.

The intermediate (2025) and ultimate population (2035) of above 6 town pancahayts is 123500 and 142500 with base year as 2015. The demand has been arrived with a pro-rata supply of 135 lpcd. after deducting the existing level of supply.

By adopting 18 hours of pumping, the total quantity of clear water requirement for the base year (2015), intermediate year (2025) and ultimate year (2035) will be 15.90 MLD, 18.67 MLD and 22.33 MLD respectively after deducting the existing level of water supply of the 698 habitations and 6 town panchayats.

Population and demand statement is as follows

S.No	Name of Union	Population			LPCD	Net Demand after deducting existing supply
		Base Year	Inter mediate	Ultimate		Base Year	Intermediate	Ultimate
		2015	2025	2035		2015	2025	2035
1	NANGAVALLI	84351	98444	114965	55	3597341	4202460	4912780
2	MECHERI	107055	120272	135231	55	4512085	5069654	5701516
3	TOWN PTS- 6 Nos	107400	123500	142500	135	3361000	4198500	5498500
	Sub - Total	298806	342216	392696		11470426	13470614	16112796
	INDUSTRIAL DEMAND @10%					1147064	1347094	1611314
	FIRE FIGHTING DEMAND @ 5%					630857	740889	886213
	TRANSMISSION LOSS @20%					2649662	3111712	3722040
	TOTAL					15898081	18670381	22332435
	Clear Water					15.90	18.67	22.33
	Raw Water @ 5% Extra For Wash Water					16692985	19603900	23449057
	Quantity in MLD					16.69	19.60	23.45

Brief Description of the Proposal:

It is proposed to construct a off-take well cum raw water pump house of size 12.0m x7.0m at the River bank of river Cauvery near Reddiyur in the downstream of Mettur dam south of Thottilpatti. Raw water is proposed to be pumped by means of 3 Nos of Vertical Turbine pumpsets of duty 9076 lpm against a total head of 100m through 700mm dia MS pipes for a length of 4400 m up to booster station at Thalaiyur and 700 mm dia MS PIPE for a length of 6780m from booster station to treatment plant. It is proposed to construct a full scale Treatment plant of capacity 23.45 MLD for Ultimate Stage at Veerakkal .Treated water will be conveyed to the 75 Nos of Service reservoirs proposed to be constructed and 617 Nos of existing service reservoirs by means of pumping main at total length of 574.50 Km. It is proposed to provide distribution network for a length of 27.10Km with 128Nos Public fountain.

Rates:

PWD and TWAD Board Schedule of Rates for the year 2013-14 have been adopted

Cost of the project:

The cost of the Combined Water Supply Scheme works out Rs. 158.64 Crores to install and Rs. 6.90 Crores to maintain annually.

The per capita cost and cost per 1,000 litres are furnished below:
i. Per Capita Cost : Rs. 5309/-
ii. Cost per 1000 Litres : Rs. 21.66

Funding:

Beneficiary-wise Project Cost, and the mode of funding suggested are given below.

S.No	Beneficiaries	Proportionate Project	Mode of Funding Proposed
1	Nangavalli.TP	3.58	80%MNP 20% ULB Contribution
2	Mecheri TP	13.60
3	Veerakkal Pudur TP	4.68
4	P.N.Patty TP	1.78
5	Vanavasi TP	3.31
6	Jalakandapuram TP	9.04
7	Rural Habns 698 Nos	122.65	NRDWP/SMS
	Total	158.64

Now it is proposed to pose MNP components for availing NABARD Loan.

Maintenance:

On completion the scheme will be maintained by the Contractor’s for the period of 54 Years and after that the Scheme will be maintained by TWAD Board

Present Stage:

The work order for the scheme has been issued on 19.08.2015 and commenced on 20.08.2015.So far 94% of work has been completed and expenditure incurred is Rs.97.43 Cr.(61%) . The scheme is under trial testing from 23.06.2018.The scheme is proposed to be completed by 08/2018 and after 6 months trial run the scheme will be put in to beneficial use of the public.

Salient Details:

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