POLICY
NOTE - 2003-04
XIV.
CHENNAI METROPOLITAN WATER SUPPLY AND SEWERAGE BOARD
The
main objective of the Chennai Metropolitan Water Supply and Sewerage
Board is for exclusively
attending to the growing needs of
and for Planned Development and appropriate regulation of water supply and
Sewerage services in the Chennai
Metropolitan area, with particular reference to the protection of public
health.
1.
WATER MANAGEMENT PLAN
Chennai
Metropolitan Water Supply and Sewerage Board would execute the Water
Management Plan to augment the source of water supply, both from surface and
ground water with a strategy to
improve the per capita water supply and assure reliable quantity of water
supply to industries. The plan
would also envisage conjunctive use of surface and ground water.
The
following are the highlights of the proposed water management plan:-
1.
Based on the storage availability in the lakes as on 1st
January of each year and also the ground water table in the wellfields, a
strategy would be evolved to fix the quantum of supply to be given in each
month to the city and to the industries so as to maintain a minimum storage in
the lakes till the beginning of
next monsoon i.e. 1st of October.
2.
The above strategy would also depend on the availability of water in
Kandaleru and Somaseela/Srisailam Reservoirs of Telugu Ganga Project.
3.
In augmentation of water supply sources, the works of Chennai Water
Supply Augmentation Project - I, to draw 180 mld of water from Veeranam lake,
which has been conceived during last year would be executed expeditiously as
planned.
4.
Construction of Check dam across
Palar near Vayalur in Kancheepuram District is one of the items of work under
Chennai Water Supply Augmentation Project II.
After detailed investigation by PWD, this component is now proposed to
be linked with Chennai Water Supply augmentation Project I for conveying water
through the pipe line being laid under Chennai Water Supply Augmentation
Project I near Mangalam.
5.
The Kolavoy Lake near Chengalpattu would be tapped for drawal of water
for Chennai City and this would be implemented in the year 2003-04 and
completed by September 2004.
6.
The works contemplated under Second Chennai Project with World Bank
assistance are nearing completion and the additional works such as ; (1) Providing chlorinators, (2) Refurbishment of Kilpauk
Water Treatment Plant, (3) Installation of bulk meters, (4) Procurement of lab
equipment, (5) Procurement of Tools and Tackles; and (6) Implementation of GIS
& ISTP in a pilot area are being proposed for implementation.
7.
Metrowater is planning to seek further World Bank assistance as
“Third Chennai Project” for about Rs.600 Crores (or) US$ 125 Millions
towards (1) systemic improvements in water supply in Chennai city, (2)
provision of infrastructure facility to draw additional ground water from A.K.
Basin; (3) extending information system and technology planning in the left
out areas (ISTP); (4)
implementation of Geographic Information system (GIS); (5) under Unaccounted
for water carrying Leak Detection and Rectification Works in leftout areas;
(6) provision of water supply infrastructure facilities in the AUAs and DUAs
and (7) Construction of Sewage Treatment Plants in 7 Urban Local Bodies.
8.
Construction of checkdam at Thirukandalam across Kortaliar, the
refurbishment of Vallur anicut, desilting
and improvement of Ambattur Eri, Korattur Eri and Rettai
Eri at Madhavaram and fencing of Porur Eri will be taken up.
9.
As a conservation measure, the concept of Rain water harvesting would
be further popularised, so as to make it a genuine, participatory People’s
movement and also the amended provisions in the Ground Water Regulation Act
would enable to regulate the ground water extraction.
10.
The public buildings and Government Hospitals would be made self
sufficient in their water needs
by providing with Reverse Osmosis Plants to treat locally available
brackish water for use wherever feasible. This would decrease the
dependability on the piped water supply.
11.
As a flood alleviation
programme the sewerage improvement works contemplated under Chennai City River
Conservation Project are programmed to be completed before the onset of the
North - East monsoon.
12.
The capacity of the 4 Sewage Treatment Plants at Kodungaiyur,
Nesapakkam, Koyambedu and Perungudi will be increased from 268 mld to 532 mld.
13.
The sewage overflow into storm water drain and city water ways from the
sewer system would be prevented on implementation of the on-going Chennai City
River Conservation Project.
14.
Metrowater has planned to provide 100 MLD Sea water desalination plant
on BOOT basis to have a reliable source of water supply as a drought proofing
plan.
15.
Metrowater has planned to achieve 100% water and sewerage connections over the
next three years in a phased manner. As
part of the strategy and as per instructions of the Hon’ble
Chief Minister
the low
income disadvantaged
people living
below poverty line are being provided with sewer connection on payment
of a nominal fee of Rs.100 each, as against the prescribed normal fee of
Rs.3390 per connection. The Urban poor
above poverty line
living in slums are being given sewer and water connections at a concessional
cost of 50% of the prescribed connection charges. In the interest of
sanitation and clean hygiene, these measures have been taken at a cost of
Rs.8.5 Crores.
16.
In order to treat additional water to be drawn from Andhra Pradesh
under Telugu Ganga Water Supply Project the work of construction of an
additional 530 mld Water Treatment Plant at Chembarambakkam with part
assistance from the French Government has been commenced and works are in
progress and programmed to be completed by January 2005.
17.
The work on 50 MLD Tertiary Treated Reverse Osmosis (TTRO) plant to
ensure uninterrupted and exclusive supply of water to industries would be
commenced in the current year.
18.
To reduce the seepage and leakage in the Baby Canal from Poondi
Reservoir to Upper Supply Channel at Tamaraipakkam and in the link canal near
Redhills (Mclean Canal) their lining will be taken up.
2. STATUS
ON CHENNAI CITY WATER SUPPLY IN 2003
The North-East monsoon in the year 2002 was normal in Chennai City; but
in the catchment areas of the lakes supplying water to Chennai City, the
rainfall was deficient. As
against the normal annual rain fall of 1400mm, the catchment areas received a
rainfall of about 1100mm only. In
the year 2001, these areas received a rainfall of 1400mm.
Besides, in 2001, water from Kandaleru reservoir in Andhra Pradesh to
an extent of about 3.26 tmc (thousand million cubic feet) was also available.
With this, daily supply of water was maintained at normal levels in the
year 2002.
The combined storage of three lakes viz. Poondi, Cholavaram and
Redhills in January 2003 was only about 39%.
With this storage, it would have been possible for Metrowater to
maintain daily water supply till April 2003.
Due to deficient rainfall in Andhra Pradesh, the present storage in
Srisailam, Somasila and Kandaleru are also very poor.
Also the current water level in these reservoirs is below the drawable
level. Based on the request of
the Hon'ble Chief Minister of Tamil Nadu, Andhra Pradesh Government has agreed
to spare water from the expected flows from the South-West monsoon after July
2003, if the storage position improves.
Considering this difficult situation and
in order to ensure supply of drinking water to the residents, Metrowater has
implemented supply of water on alternate days through the distribution
pipelines, commencing from 18.01.2003.
Alternate day's supply is so maintained
as to ensure that water reaches the tail-end areas.
However tanker lorry water supply is also being maintained for
defective and unserved streets, to the extent required.
About 275 MLD is supplied on supply days through pipeline and 25 MLD on
nonsupply days for maintaining lorry water supply.
The drawal from Redhills Lake is also supplemented by Ground water
extraction from Well fields to an extent of about 80 MLD, which will be
increased to 100 MLD progressively.
It is also proposed to hire additional
75 numbers of private agricultural wells to yield about 25 MLD of additional
water to stabilise the drawal at 100 MLD during summer.
Infrastructure improvements to Well fields is proposed to be taken up
at a cost of Rs.12.58 crores for providing additional pipelines and pumpsets
to convey the additional water from agricultural wells.
A Contingency Plan has been drawn up at
a cost of Rs.55 crores to execute the additional works required to supplement
the available water from the reservoirs.
3.
LINING
OF BABY CANAL AND LINK CANAL
During the current year it has been
programmed to take up the lining
of baby canal from Poondi to Upper Supply Channel for a length of 15.65 K.M.
at a cost of Rs. 280/- lakhs to minimise the seepage losses while transferring
water from Poondi lake to Cholavaram lake through upper supply channel.
Similarly the last reach of link canal from Poondi to Red Hills for a
length of 6.25 K.M. at a cost of Rs.500/- lakhs will also be taken up for
lining.
4.
CHENNAI WATER SUPPLY AUGMENTATION
PROJECT – I
The
Chennai Water Supply Augmentation Project – 1 for the drawal, treatment,
conveyance and distribution of 180 MLD water from the Veeranam lake to Chennai
City at a total cost of Rs.720 crores has
been taken up for implementation by the Chennai Metropolitan Water Supply
& Sewerage Board. Works have
been commenced and are expected to be completed by June 2004.
Construction of Check dam across
Palar near Vayalur in Kancheepuram District is one of the items of work under
Chennai Water Supply Augmentation Project II.
After detailed investigation by PWD, this component is now proposed to
be linked with Chennai Water Supply Augmentation Project I for conveying water
through the pipe line being laid under Chennai Water Supply Augmentation
Project I as additional work near Mangalam.
The anticipated yield is 20 MLD. the
total investment cost is Rs. 95
crores.
5. MEASURES TO
AUGMENT WATER SUPPLY FROM KOLAVOY LAKE NEAR CHENGALPATTU.
The
Kolavoy Lake located near Chengleput is proposed to be considered for Chennai
City Water Supply needs. The expected yield after meeting the present ayacut
irrigation requirement is 20 MLD. Since
Kolavoy Lake is presently polluted due to discharge of sewage from the
Chengleput Town, interception,
diversion and treatment of the sewage have been formulated at a cost of about
Rs. 5.00 crores. Cleaning the
Kolavoy Lake using “Bio Remediation’’
technique (as adopted for cleaning Ooty and Kodaikanal Lakes)
has been proposed at a cost of about Rs.10.00 crores. The tentative
cost of drawal of water from Kolavoy lake, conveyance, treatment at Mangalam
near Thirukalukundram and pumping
into 1875 mm dia MS Pipeline of Chennai Water Supply Augmentation Project-1
for transmission to Chennai City works out to Rs.14.20 crores and these two
items of works will be taken up shortly.
6. SECOND CHENNAI
PROJECT
The
Second Chennai Water Supply Project, taken up in 1996 at a cost of Rs.778.79
crores is in an advanced stage of implementation.
In order to ensure equitable distribution of water in Chennai City, 7
new water distribution stations have been commissioned. Work on the
transmission mains is also completed. Out of 16 distribution zones, in 8 zones
namely Patel Nagar, Ekkattuthangal, Pallipattu, Nandanam, Kolathur, Vyasarpadi,
Choolaimedu, Kannapparthidal strengthening
of distribution system were completed and the 3 zones viz. Valluvarkottam,
Mylapore, Velachery are programmed to be
completed by May 2003.
7.
ADDITIONAL WORKS PROGRAMMED UNDER
SAVINGS IN SECOND
CHENNAI PROJECT
The
following additional works programmed to be implemented under the savings
available in Second Chennai Project before March 2004;
(1) Providing chlorinators, (2) Refurbishment of Kilpauk Water
Treatment Plant, (3) Installation of bulk meters, (4) Procurement of lab
equipment, (5) Procurement of Tools and Tackles; and (6) Implementation of GIS
& ISTP in a pilot area.
(a)
Providing Chlorinators:-
In
order to provide chlorination in the water distribution stations to maintain
required residual chlorine of 0.2 ppm at the consumer end, chlorinators have
been proposed to be provided in 15 water distribution stations before March
2004.
(b)
Refurbishment
of Kilpauk Water Treatment Plant:
The
existing water treatment plant at Kilpauk is functioning from the year 1914
and several improvements have been made during the past years. However the entire water treatment plant is being
refurbished. Therefore
refurbishment of Kilpauk Water Treatment Plant would be taken up during the
current year for which work order has been issued and the work is programmed
to be completed by March 2004.
(c)
Installation
of bulk meters.
The
bulk meters of about 56 Nos. of sizes varying from 100mm to 1200mm would be
provided in all the water treatment plants, water distribution stations, and
wellfields to measure the quantity of water received and outgoing to enable to
assess the efficiency of the unit.
(d)
Procurement
of lab equipment:
The
existing laboratory facilities would be strengthened with modern equipment’s
for testing the water and sewage qualities.
(e)
Procurement
of Tools and Tackles
The
existing Water Treatment Plants and Water Distribution Stations would be
provided with tools, testing equipment, and health and safety equipments in
order to have planned preventive maintenance.
(f)
Implementation
of GIS
A
pilot project for Geographical Information System (GIS) was under
implementation in one of the 10 Areas viz. Area V under ongoing Second Chennai
Project. The GIS project aims to
asset mapping of all under ground assets (pipelines, water connections etc)
and visible assets. The area of
net work covered is about 30 sq. km. at a cost of Rs.35.00 millions.
The work comprises of (1) preparation of a Digital Base map; (2)
Procurement of GIS software; and (3) Selection of Contract for Asset Survey
and Asset Mapping.
(g)
Implementation
of ISTP
Under
the ongoing Second Chennai Project, the Information System and Technology
Planning (ISTP) for online billing and collection, financial accounting and
stores accounting is under implementation as pilot project in CMWSSB's Head
Office and in one of the Area Office viz., Area Office - V and its 19 depot offices. This work is
programmed to be completed by September 2003 at a cost of Rs.30.09 Millions.
The
ISTP work comprises of providing Sun server, Thin Client Terminals, personal
computers, Uninterrupted Power Supply (UPS), Printers, communication
equipment, and supply of Enterprises Resource Planning (ERP) software, General
purpose software such as Solaris operating system, windows operating system,
Microsoft office, MS exchange, and network software.
8.
THIRD CHENNAI PROJECT
Metrowater has planned to seek further World Bank assistance as
“Third Chennai Project” for about Rs.600 Crores (or) US$ 125 Millions
towards (1) systemic improvements in water supply in Chennai city, (2)
provision of infrastructure facility to draw additional ground water from A.K.
Basin; (3) extending Information system and technology planning (ISTP) to all
areas; (4) Implementing
Geographic Information system (GIS) in the entire operational area; (5) Under
Unaccounted for water carrying out Leak Detection and Rectification Works in
left out areas; (6) provision of Water supply infrastructure facilities in the
AUAs and DUAs and (7) Construction of Sewage Treatment Plants in 7 Urban Local
Bodies.
The
above proposal includes construction of checkdam at Thirukandalam across
Kortaliar, the refurbishment of
Vallur anicut, desilting and
improvement of Ambattur Eri, Korattur Eri and Rettai
Eri at Madhavaram and fencing of Porur Eri at a combined cost of about
Rs.100 crores.
(a)
Strengthening of water Distribution system in the left out 5 zones
Under
Second Chennai Project out of 16 zones, 11 zones have been taken up for
strengthening and completed. This
has resulted in improved service levels in the 11 zones whereas the service
level in the remaining 5 zones continues
to be in the earlier status with higher number of defective streets. Hence it
is proposed to take up the strengthening of the water distribution system in
the remaining 5 Zones also viz. Anna Poonga, Kilpauk, Triplicane, Southern
Headworks and KK Nagar.
(b)
Infrastructure facility to draw additional ground water from
Araniyar Kortaliar Basin
Under the Second Chennai Project, the
consultancy study by M/s. Scott Wilson Ltd
to reassess the Groundwater Potential and introducing Transferable
Water Rights in Araniyar Kortalayar Basin is under progress.
The
ongoing study so far conducted indicate the possibility of extraction of
additional ground water in A.K. basin. Therefore
it is proposed to provide infrastructure facilities to draw additional ground
water from the A.K. Basin by providing borewells, pumpsets, transmission
mains, Booster stations
(c)
Information System and
Technology Planning (ISTP)
Under
the ongoing Second Chennai Project, the Information System and Technology
Planning (ISTP) is under implementation as pilot study in CMWSSB's Head Office
and in one of the Area Office viz., Area Office - V and its 19 depot offices.
In
order to extend similar facility to the remaining consumers of the Chennai
city, it is proposed to provide ISTP in all the remaining 9 Area Offices
including 140 depot offices, 2 Regional Offices, Sewerage Treatment Plants,
Quality Control Wing, and Resources Centre.
This will enable total online computerised functions covering all
functions such as billing,collection, financial accounting, complaints
monitoring, preventive maintenance and asset management etc.
Further
all the consumers in Chennai city can pay their taxes and charges in any one
of the Depot offices of Metrowater.
(d)
Geographical Information System (GIS)
A
pilot project for Geographical Information System (GIS) was under
implementation in one of the 10 Areas viz. Area V under ongoing Second Chennai
Project. Now it is proposed to extend the above G.I.S. to the entire
operational jurisdiction of CMWSSB in Chennai City i.e the remaining 9 areas
covering about 140 sq.km.
(e)
Unaccounted for water in left out areas
In
order to maintain the water supply in Chennai city, this has been divided into
159 Divisions. The total length
of the water distribution pipeline net work is about 2300 kms. and the number
of existing water connections is about 3.12 lakhs.
The
studies indicated that there was considerable loss of water in the system both
in the mains and in house service connections.
Hence the Leak Detection and Rectification works to reduce the level of
unaccounted of water in phases with World Bank funding were taken up under
Second Chennai Project. Under
this project, 2,34,000 Nos. of house service connections would be renewed and
so far about 2,17,000 Nos. have been completed and the remaining will be
completed by May 2003. Renewal of
chokedup mains for a length of 591 kms contemplated and 550 kms completed and
further works are in progress.
It
is proposed to take up renewal of choked up AC/PVC/CI mains in the left out
areas for a length of about 300 kms. and to renew the balance house service
connections of about 80,000 Nos.
(f)
Water supply infrastructure facilities in Adjacent Urbanised Areas
(AUA) and Distant Urbanised Areas (DUA)
A master plan for providing water supply to 20 AUAs are to be taken up
shortly by consultants with funding by World Bank.
Pending finalisation of Master Plan, works in 12 local bodies have been
completed towards strengthening of transmission mains and storage capacity.
The works completed earlier are only towards strengthening of
transmission mains and storage capacity.
The distribution system in most of the local bodies is to be provided
so as to effect house service connection.
In
view of the augmentation of source of water supply planned now
the water supply needs of AUAs and DUAs will be met by 2004 by
strengthening the distribution system and water supply distribution stations..
(g)
Sewage treatment plants in
urban local bodies (7 Nos.)
At
present only Chennai city and
part of Tiruvotriyur are having sewerage system in the CMA.
The sewerage system for Alandur and Valasarawalkam Town Panchayat is
under implementation. Hence it is
proposed to provide sewerage system for the following 7 Urban Municipal Local
Bodies, where the density of population is more withinin CMA.
1.
Tiruvotriyur (remaining parts) (AUA)
5. Mahdavaram (AUA)
2.
Ambattur (AUA)
6. Tambaram (DUA)
3.
Avadi (AUA)
7. Pallavaram (DUA)
4.
Kathivakkam (AUA)
The
present ongoing sewerage scheme in Alandur and Valasarawalkam is based on
public private partnership. The
householders in the local bodies contribute about 20% of the cost of the
scheme and the remaining 80% is the share of local body/Government.
On the same basis to encourage public-private partnership, the sewerage
scheme for the above local bodies is proposed to be implemented.
The
collection system and pumping station cost would be borne by consumers and
local bodies. The cost of
treatment plant is proposed to be funded under this project.
9 .CHEMBARAMBAKKAM 530 MLD
WATER TREATMENT PLANT.
Presently, Chennai city has two water treatment plants one at Redhills
of 300 mld capacity and another at Kilpauk of 327 mld capacity.
In
order to treat additional water to be drawn, under Krishna Water Supply Phase
II Project,
additional treatment plant of
530 mld capacity is proposed to be constructed at Chembarambakkam
with part assistance from
French Government. The contract has been awarded.
Work is under progress and will be completed by Jan .2005.
10. IMPLEMENTATION
OF THE GROUND WATER REGULATION ACT
On
the basis of clear evidence of seawater intrusion in the Minjur aquifer of the
A.K. Basin located North of Chennai, the Government of Tamil Nadu enacted the
Chennai Metropolitan Area Ground Water Regulation Act in order to regulate and
control extraction, use and transport of ground water.
The Act came into force from 15.2.1988 and is being implemented by
Metrowater Board in co-ordination with the Collectors of Kancheepuram and
Tiruvallure Districts covering Chennai City and 243 scheduled Revenue
villages.
To
realise more benefits the existing Ground Water Regulation Act has been
amended as detailed below.
1.
Strengthening the provisions
of enforcement
2.
Inclusion of 59 Revenue villages in the Taluks of Uthukottai, Ponneri,
Tambaram and Sriperumpudur in addition to the existing list of 243 Revenue
villages in Kancheepuram and Tiruvallure Districts.
3.
Enhancing the penalty from
Rs,2000/- to Rs.5000/-on violation of
the provisions of the Act.
4.
Making the installation of
Rainwater Harvesting structures in all new and existing buildings mandatory.
5.
Use of re-cycled water for non-drinking purposes both in industrial uses and select domestic uses.
6.
Bringing in restrictions on the depth of bore wells.
11.
RAIN
WATER HARVESTING
Chennai City receives an average rain fall of about 1100 to 1400mm per
annum. Considering
the importance of Rainwater Harvesting and
conserving the precious ground water resource, the Board has established a
fully dedicated "Rainwater Harvesting Cell".
This Rain water Harvesting Cell provides
awareness on Rain Water Harvesting and offers technical assistance free
of cost in Rain Water Harvesting
and also provide cost effective solutions to the Chennai residents.
During the year 2002-2003, free RWH Training was offered by the RWH
Cell to individuals, N.G.O’s Resident Associations, Practicing Engineers,
Masons and Plumbers in 28 batches. Apart
from this as part of out door campaign, Presentations and Lectures were given
in 35 places which include Schools, Colleges, Polytechnics, Welfare
Associations, N.G.O’s and other Institutions.
To
demonstrate to the people various methods of Rain Water Harvesting that could
be practised in all types of buildings, Metrowater has created demonstration
structures in public places such as Raj Bhavan, Museum complex, Children Park,
Lady Willington School etc. and a new Rain Centre has been set up in Anna
Nagar where simple and cost effective working models are exhibited. Similarly, an information kiosk in High Court complex has
been erected for providing information and guidance to the public.
Further information dissemination through Audio-Visual media such as
jingles and short films containing messages from the Hon’ble Chief Minister
is made periodically.
In order to reinforce the regulatory mechanisms for making
the citizens to install Rainwater Harvesting structures in their respective
premises, the building Rules have been amended so as to make the same
mandatory for all the new buildings at the time of construction itself and for
the existing buildings also within a time frame of one year. The water and
sewer connections are effected only on completion of Rain Water Harvesting in
new buildings. This is gaining
momentum as people’s movement.
Consequent to the above efforts, 70,000
Rain Water Harvesting structures have been installed in 34000 buildings. The
rest of the city will be covered before November 2003.
I2.
SEWERAGE SYSTEM IMPROVEMENTS:
At present the existing sewerage system
covers about 97% of Chennai City. The
present level of coverage extends to a total
length of 2300 kms.
1.
To improve the environment and the public health status of economically
disadvantaged people residing in slums, Metro Water has decided to provide
each dwelling with water supply and connections.
To achieve this objective, Metrowater has reduced the cost
of water connection charges by 50% of the existing rates. (i.e. from Rs.1930
to Rs. 965) to all living in notified slum agglomerations. However, as per the
instructions of the Hon’ble Chief Minister, in respect of persons who are below the poverty line, irrespective of their being
in slum agglomeration or not, the sewer connection is being provided at a fee
of Rs.100 per connection, as against the normal fee of Rs.3390. So far about
23000 applications have been received, of which 2600
connections provided. The
balance connections will be effected before the onset of North-East Monsoon.
This will cost Rs. 8.5 Crores.
2.
The capacity of the 4 Sewage Treatment Plants at Kodungaiyur,
Nesapakkam, Koyambedu and Perungudi will be increased from 268 mld to 532 mld
at a cost of Rs.117 Crores.
3.
The sewage overflow into storm water drain and city water ways from the
sewer system would be prevented on implementation of the on-going Chennai City
River Conservation Project.
13. FLOOD ALLEVIATION
PROGRAMME
Following
the inspection of flood affected areas in the city, Hon'ble Chief Minister
instructed that the sewerage improvement works including laying of larger
capacity pipeline and improving the capacity of sewage pumping stations should
be speeded up and completed by August
2003, before the onset of the North-East Monsoon.
This project at a cost of Rs.125 Crores will provide much needed relief
to residents of North Chennai and other low lying areas of the City.
14. 100 MLD SEA WATER
DESALINATION PLANT
In
order to bridge the gap in water availability for Chennai City, it is proposed
to provide sea water desalination plant for 100 MLD capacity on Build, Own,
Operate and Transfer (BOOT) basis as a drought proofing measure.
Feasibility study and preparation of tender documents have been taken
up. The proposal is for international competitive bidding with
latest technology available like using multistage flash process, multieffect
distillation process, and using the excess steam available with TNEB in Ennore
Thermal Power Plant is also under consideration.
15. CONSTRUCTION OF
50MLD TERTIARY TREATED REVERSE OSMOSIS
PLANT (TT/RO PLANT)
Tenders
received for construction of a 50MLD Tertiary Treated/Reverse Osmosis Plant at
Kodungaiyur to treat the secondary treated sewage available in the existing
sewage treatment plant at Kodungaiyur are being processed. This water will be
supplied to the industries in the Manali area to meet their increasing water
demands. The project cost is Rs.160 Crores.
16.
CHENNAI CITY RIVERS CONSERVATION
PROJECT
1.
The Chennai City Rivers Conservation Project continues to be
implemented with part grant from Government of India, and is on schedule.
The long term objective of the project is holistically to improve the
water ways and sewerage disposal network.
2. This comprises of “Interception, Diversion and Treatment of Sewage” in the city and enhancing the capacity of the existing Sewage Treatment Plants. The works are planned to be executed in 16 packages. Tenders have been settled for 14 packages and works are in progress. Tenders for the remaining 2 packages are under evaluation. Government of India have released Rs.111.90 crores till date as grant against an expenditure of about Rs.120 crores. The entire project will be completed by December 2004.
