HYDRAULIC ENGINEER’S DEPARTMENT

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.

Water Supply Objective

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

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

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

Vehar

Tansa

TANSA

Modak Sagar

Modak Sagar

Modak Sagar

U Vaitarna

Bhatsa

Future Sources

Source Yield (MLD) Distance (Km)

Gargai (through Modak Sagar) 440 130

Pinjal 865 195

Damanganga (through Pinjal) 1586 195

TOTAL 2891

Middle Vaitarna site

Gargai

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

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

Panjrapur Filter Plant

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

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.

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

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

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

o Water supply by gravity is not possible to Slum Colonies in elevated areas

o Policy adopted: Ground storage tank at lower

elevation, Pumping system and pumped delivery main to be constructed by the corporation at its cost.

o Installation to be handed over to the association of

slum dwellers for O & M. o Association is also responsible for payment of water

charges bill.

o If 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

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

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.

Sr

No.Tests

Acceptable Max. permissible Min

1 Turbidity (JTU) 5.0 10.0 0.4

2 Colour (Hazent) 5.0 25.0 <1

3 pH 7.0 to 8.5 6.5 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

10 Manganese (mg/l) 0.1 0.3 0.0

11 Alumnium (mg/l) 0.0 0.2 0.0

IS:10500:2012 Mumbai Water

Quality of Mumbai’s Water

•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

Entire

Operation & Maintenance

is Departmental

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

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.

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

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