Mumbai's Water Supply - Sources, Distribution

Mumbai Water Supply PPT

1. HYDRAULIC ENGINEER’S DEPARTMENT

2. MCGM- A Glimpse of Size & Scope of Operations
 MCGM is the Local Authority for Mumbai which is India’s financial capital
Mumbai is Maharashtra’s state capital – A city with very high population
and structural density (Population density of 27,209 persons per Sq.
Km. )
 A coastal city with massive reclamation.
 MCGM caters to an area of 437.71 Sq. Km.
 A population 12.5Million people (2011) – Slum Population 5.25 Millions
 MCGM has an employee strength of 1,40,000
 Annual Budget (2015-16) of Rs.34000 Crores.

3. Water Supply Objective
To provide uninterrupted,
safe & adequate water supply
to the citizens of Mumbai on
365 x 24 x 7 basis

4. Present Sources
Year Source Yield (MLD) Distance (Km)
1860 Vehar 110 20
1872 Tulsi 18 30
1892-1945 Tansa 400 110
1954 Vaitarna 455 130
1972 Upper Vaitarna 635 180
1980 Bhatsa I 455 130
1989 Bhatsa II 455 130
1998 Bhatsa III 455 130
2007 Bhatsa III A 355 130
2008 Bhatsa III B 300 130
2015 Middle Vaitarna 455 150
TOTAL 4093

5. Water Demand

•Present population 13.5 Million
•Present demand 4300 MLD
•Present Supply (gross) 4093 MLD
•En-route supply 150 MLD
•Transmission constraints 200 MLD
•Net available supply 3750 MLD
•Projected population(2041) 17.24 Million
•Projected demand (2041) 6000 MLD

7. Vehar

8. Tansa
TANSA

9. Modak Sagar

10. Modak Sagar

11. Modak Sagar

12. U Vaitarna

13. Bhatsa

14. Future Sources
Source Yield (MLD) Distance (Km)
Gargai (through Modak Sagar) 440 130
Pinjal 865 195
Damanganga (through Pinjal) 1586 195
TOTAL 2891

15. Middle Vaitarna site

16. Gargai

17. Transmission System - WTP & Storage
•Trunk Conveyance : Tunnel and Transmission Mains
(Range 5500 mm to 2450 mm): 1000 KMS
•Trunk mains (Outlets / Inlets) 2450mm to
1200mm:500 Km
•Major Water Treatment Plan
Bhandup : 1910 Mld + 900 Mld (Constructed in MV)
Panjarapur : 1365 Mld
Vehar : 110 Mld
Tulsi : 18 Mld
•Major Pumping stations: Pise, Panjarapur, Bhandup,
Raoli
•2 Master Balancing Reservoirs : Yewai 118 MLD &
Bhandup 246 MLD
•Service Reservoirs : 27
•Length of water mains : 6000 Kms

19. WATER SUPPLY SCNARIO
No. of daily operated valves : 850
Supply hours : 2 to 24 Hrs
Average Pressures Trunk Mains : 50 MWC to 80
MWC - 1000 KM
Feeder Mains : 20 MWC to 50 MWC – 500 Km
Distribution Mains : 3 MWC to 15 MWC - 6000 KM
Pipe Material for Trunk & Feeder Mains : Mild Steel,
Ductile Iron & Cast Iron
Distribution Mains : C.I., D.I., P.E
Connections Metered : 383,306 Un Metered :
100,000
Non functional meters : 50%
Island City is partially and Suburbs are fully metered
Water billed (Year 2015) : 2200 MLD
Un-metered (estimated) : 600 MLD

20. Panjrapur Filter Plant

21. Tunnel Conveyance in MCGM water supply
Modak sagar to Bifucation Chamber 2950mm, 7Km Horse Shoe 1954 ; 3500mm, 7Km circular 2014

Kalher-Kolshet below Kasheli creek 3650mm, 1.5Km Circular 1971

Mulund-Kandivali (E-W) tunnel 2500mm, 5.8 Km Semi-Cicular 1972

Saddle tunnel at Bhandup 5000mm 1 Km, Horse-Shoe 1981

Race course – Malbar Hill 3000mm, 4Km Circular 1987

Bombay II tunnel below Kasheli creek 3500mm, 0.7Km Circular 1992

Kings circle – Shiwadi tunnel 3000mm, 4Km Circular 1996

Ruparel – Race course 3000mm, 5Km Circular 2000

Bhandup – Malad – Liberty Garden 3000mm, 9Km Circular 2005

Liberty Garden – Charkop 3000mm, 3Km Circular 2006

Kilachand – SK Patil – Cross Maidan , 2250mm ,6 Km circular 2012

Veravali – City Mall – Yari Road , 2250mm , 6 Km circular 2012

Maroshi – Vakola – Mahim – Ruparel 3000mm, 12 Km circular 2014

Powai – Veravali 2250mm 2Km ; Powai – Ghatkopar 2250mm 4Km in progress

Gundavali– Kapurbawadi– Bhandup 5500mm, 14 Km circular completed to be commissioned 2016

22. ELIGIBILITY FOR GROUP CONNECTION IN SLUMS
•Present criteria
oEligibility – Structure prior to 1.1.2000
oProof of Residence prior to 1.1.2000
Metered water connection granted for a group of
minimum 5-Residance with a tap in GWP.

•This results in water pilferage / theft and illegal
tampering of water mains by families not
eligible for water connections.
•There is illegal trading of water by
unscrupulous elements in the society
Proposal to grant water connection to all
applicants irrespective of Tenure or proof of
existensce prior to any particular date is under
consideration.

23. Tariff structure consists of: – TAXES (on CV) (Un-metered premises)
CHARGES (Metered Premises)

– Water Tax (R) 0.253 % / (NR) 0.459 % to 1.837 %
– Sewerage Tax (R) 0.163 % / (NR) 0.296 % to 1.185 %
– Water Benefit Tax (R) 0.069 % / (NR) 0.126 % to 0.504 %
– Sewerage Benefit Tax (R) 0.043 %/ (NR) 0.078 % to 0.311 %

Water Benefit Tax & Sewerage Benefit Tax are levied to all premises
irrespective of Meter / Un-metered supply and used for Cap-ex &
Upgrading of services.

Metered premises levied Water Charges Rs. / KL as under ( from
16.06.15):
1 Slums 3.49 / KL (3.87 / KL in case of pump supply to elevated
slums)
2 Resi. C.H.S. Bungalows / Row Houses 4.66 / KL
3 Dispensaries, Hospitals, Maternity Homes 18.66 / KL
4 Commercial Establishments, BEST 34.99 / KL
5 Industries, Railways, BARC 46.65 / KL
6 Bulk Consumers, Star Hotels, Race Course 69.98 / KL
7 Aerated Drinks / Bottled water 97.2 / KL

24. Mumbai Water Supply Scenario.. Continue

Billed Estimate Residential : 1950 MLD (Metered)

Estimated Un-metered (R) : 600 MLD

Industrial : 80 MLD

Commercial : 180 MLD


Meter Category

Domestic (non slum) Residential : 87,414

Domestic (slum) Residential : 2,30,525

Commercial : 59,933

Industrial : 5,434

25. REVENUE GENERATION (2015 -2016)


Annual Revenue Demand – 1465.30 Cr. (WC + SC + RENT)


Annual Revenue Recovery – 1241.53 Cr.


Cost of Production of Water - Rs. 15.21 per KL
Municipal Corporation has its independent Act: MMC Act 1888

Tariff structure is proposed by the Municipal Commissioner and approved
by the standing committee.

Present Tariff structure is revised & effective from 16.06.2016.

Standing Committee has also authorized the Municipal Commissioner to
revise the Tariff to a maximum of 8% every year based on the actual
increase in

 Admin expenses Energy Bulk Water Charges O & M Expenses

26. oWater supply by gravity is not possible to Slum
Colonies in elevated areas

oPolicy adopted: Ground storage tank at lower
elevation, Pumping system and pumped delivery main
to be constructed by the corporation at its cost.

oInstallation to be handed over to the association of
slum dwellers for O & M.

oAssociation is also responsible for payment of water
charges bill.

oIf Association is not able to maintain the scheme MCGM
takes over and additional O & M charges are levied on
the consumers.
WATER SUPPLY TO SLUM SETTLEMENTS ON
ELEVATED LOCATIONS

27. Control Stations monitored by SCADA
Communication thro’ VSAT
Polling 1 min (min) to 30 min (max)

Parameters Monitored

–Flows

–Pressures

–Levels

–Pump Status at Plants

–Residual Chlorine

–Turbidity

28. Quality Control

Well equipped laboratories at treatment plants.

Central laboratory to monitor water quality of
samples collected from different parts of city.

As per WHO Standards, 1200 samples per month
(1 sample per month for 10000 population)
-4000 samples collected monthly.

Area from where unfit samples are received
attended for preventive-measures.

Use of mobile chlorinators in the area affected by
water-borne disease.

29. Sr
No.
Tests
AcceptableMax. permissibleMin
1 Turbidity (JTU)5.0 10.0 0.4
2 Colour (Hazent)5.0 25.0 <1
3 pH 7.0 to 8.56.5 to 8.5 7.2
4 Total Solids (mg/l)500.0 2000.0 20.0
5 Chlorides (mg/l)250.0 1000.0 9.0
6 Alkalinity (mg/l)200.0 600.0 25.0
7 Hardness (mg/l)300.0 600.0 34.0
8 Magnesium (mg/l)30.0 100.0 2.6
9 Iron (mg/l) 0.3 1.0 0.0
10Manganese (mg/l)0.1 0.3 0.0
11Alumnium (mg/l)0.0 0.2 0.0
IS:10500:2012 Mumbai Water Quality of Mumbai’s Water

30. •Mumbai water supply is one of the largest water supply
schemes in Asia & seventh in the world.
•Tansa dam then longest messonary dam in world (2743.2
Mtrs).
•Modak Sagar dam, first concrete gravity dam in India
designed & executed by Municipal Engineers. Also first time
pre cooled concrete in India.
•Bhandup Treatment Works is the Largest in Asia.
•3000 mm dia. Tunnels used for conveyance of water.
• Daily 800 nos. of valves are operated for monitoring water
supply
Salient Features

31. Entire
Operation & Maintenance
is Departmental

32. Water Production Cost
Sr. No Description
Cost (Rs. Per 1000
Ltr.)
1 Employee 3.5
2 Electric Power 5
3 Maint. & inventories 2.5
4 Interest on Loan 0
5 Administration 2
6 Royalty & Fees 2
Total 15

33. Problems faced by the department
•Leakage & Contamination
•Intermittent water supply
•60 to 100 years old distribution network
•Unexpected release of no development
zone
•SRA scheme with additional FSI
•Increase in demand due to influx to the
city
•Development has come up to the foot of
service reservoirs, hence water does not
gravitate.

36. H.E.
Dy. H.E.
(P & C)
Dy. H.E.
(Construction)

Dy. H.E.
(City)

Dy. H.E.
(Western
Suburbs)

Dy. H.E.
(Eastern
Suburbs)

Dy. H.E.
(Operations)

Dy. H.E.
(Maintenance)

Dy. H.E.
(Bhandup
Complex)

Dy. H.E.
(Pise
Panjarapur
Complex)

Dy. H.E.
(Stores)

Organization Set Up

37. Deputy Hydraulic Engineers

1.Planning & Control

2.Construction

3.City

4.Western Suburbs

5.Eastern Suburbs

6.Operations

7.Maintenance

8.Bhandup Complex

9.Pise Panjrapur
Complex

10.Stores