HYDRAULIC ENGINEER’S DEPARTMENT MCGM- A Glimpse of Size & Scope of Operations

 MCGM is the Local Authority for which is India’s financial capital

 Mumbai is ’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 – , 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 WATER SUPPLY TO SLUM SETTLEMENTS ON ELEVATED LOCATIONS 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. 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. Quality of Mumbai’s Water

Sr Tests IS:10500:2012 Mumbai Water No. 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 Salient Features

•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 Entire Operation & Maintenance is Departmental Water Production Cost

Cost (Rs. Per 1000 Sr. No Description 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.

Organization Set Up

H.E.

Dy. H.E. Dy. H.E. Dy. H.E. Dy. H.E. Dy. H.E. Dy. H.E. Dy. H.E. Dy. H.E. (Pise Dy. H.E. Dy. H.E. (Western (Eastern (Bhandup (Construction) (City) (Operations) (Maintenance) Panjarapur (Stores) (P & C) Suburbs) Suburbs) Complex) Complex)

Deputy Hydraulic Engineers

1. Planning & Control 7. Maintenance

8. Bhandup Complex 2. Construction

9. Pise Panjrapur 3. City Complex

4. 10. Stores

5.

6. Operations