Water Supply Scenario in Water Supply Scenario in BangaloreBangalore

- A presentation by BWSSB - A presentation by BWSSB

Presented in Water Workshop organized by Presented in Water Workshop organized by ApartmentADDA.comApartmentADDA.com

Dec-6 2009Dec-6 2009

Bangalore Water Supply and Bangalore Water Supply and Sewerage BoardSewerage Board

A statutory organization set up in 1964 under the BWSSB Act whose core functions & responsibilities include :

Providing water supply & sewerage network and sewage disposal systems

Ensuring sufficient of domestic water supply to the required standards.

Levying & collecting water/sanitation charges on a no loss/no profit basis.

BWSSB’s jurisdiction covers the Bangalore Metropolitan Area (1306 Sq. Kms out of which 455 Sq.Km is Green Belt)

BMRDA area is 8005 Sq. Kms.

Population as per 2001 Censes : 53,79,000

Population as on 2005 (As per BDA) : 62,95,000

Population as on 2025 : 94,28,000

(Projected using Graphical Method)

Population as per 2001 Censes : 53,79,000

Population as on 2005 (As per BDA) : 62,95,000

Population as on 2025 : 94,28,000

(Projected using Graphical Method)

Sl. Sl. No.No. BoundariesBoundaries Sq. Sq.

Km.Km.

11 BMABMA 12751275

22 CDPCDP 594594

33Core Area Sewerage Catchments Core Area Sewerage Catchments

(BMP Area)(BMP Area) 229229

44Peripheral Drainage Zones (8 Nos) Peripheral Drainage Zones (8 Nos) a)a) CMCCMC’’s, TMC Area - 248 Sq.Kms, TMC Area - 248 Sq.Kmb)b) Village Panchayaths Village Panchayaths –– 117 Sq.Km 117 Sq.Km

365365

Area :Area :

Bangalore Area and Bangalore Area and PopulationPopulation

Bangalore Area and Bangalore Area and PopulationPopulation

Source of Water SupplySource of Water Supply

PLAN SHOWING

THREE SOURCES

OF WATER SUPPLY

TO BANGALORE

CITY

WATER RESOURCES TO BANGALORE CITY

HESSARGHATA

CHAMRAJA SAGAR

CAUVERY WATER

PLANT

About Bangalore water About Bangalore water supplysupply

1890-19001890-1900 1896- Hesargatta WSS – untreated 1896- Hesargatta WSS – untreated waterwater

1900-19301900-1930 Hesargatta – Combined jewel filtersHesargatta – Combined jewel filters

1930-19401930-1940 T G Halli Arkavathi WSS-27 MLD T G Halli Arkavathi WSS-27 MLD

1950-19601950-1960 1952-T G Halli – 45 MLD added1952-T G Halli – 45 MLD added

1960-19701960-1970 1964 – T G Halli – 135 MLD 1964 – T G Halli – 135 MLD

1970-19801970-1980 1974 – CWSS I Stage – 135 MLD 1974 – CWSS I Stage – 135 MLD

1980-19901980-1990 1882- CWSS Stage II – 135 MLD 1882- CWSS Stage II – 135 MLD

1990-20001990-2000 1993- CWSS Stage III – 270 MLD 1993- CWSS Stage III – 270 MLD

2000-20102000-2010

2010-20202010-20202002 – CWSS Stage IV phase I -270 2002 – CWSS Stage IV phase I -270 MLD MLD

Proposed CWSS Stage IV Phase II – 500 Proposed CWSS Stage IV Phase II – 500 MLD MLD

Hessarghatta LakeHessarghatta Lake

Built in 1896

Chamaraja Sagar Reservoir

Built in 1933

Water Treatment Plant at Water Treatment Plant at T.G.HalliT.G.Halli

Built in 1933

Present Water SupplyPresent Water Supply

ProjectsProjects Year of Year of commissioningcommissioning

Installed Installed Capacity Capacity

(MLD)(MLD)

Present Present Supply Supply (MLD)(MLD)

Arkavathy (TG Halli)Arkavathy (TG Halli) 19331933 149149 6060

Cauvery Stage ICauvery Stage I 19741974 135135 135135

Cauvery Stage IICauvery Stage II 19831983 135135 135135

Cauvery Stage IIICauvery Stage III 19931993 270270 300300

Cauvery Stage IV, Cauvery Stage IV, Phase – IPhase – I 20022002 270270 270270

Total SupplyTotal Supply 959959 900900

CAUVERY RIVER - SHIVA ANICUT

WATER RESOURCES TO BANGALORE CITY

Intake Gate at NBR

Filter House at T.K.Halli

Pump House at T.K.Halli

CWSS - III Stage Pump House

Pipe Lines

Present Water Supply Scenario

Service Area Service Area : 800.29 SqKm : 800.29 SqKm

Population as on 2008 Population as on 2008 : 7.5Million : 7.5Million

Present Demand Present Demand : 1125 MLD: 1125 MLD

Present Supply Present Supply : 900 MLD: 900 MLD

The Per Capita Supply The Per Capita Supply : 110 to 120 ltrs: 110 to 120 ltrs

Water allocation from Cauvery : 19 TMCWater allocation from Cauvery : 19 TMC

Already utilised : 12 TMCAlready utilised : 12 TMC

Complete utilisation by : 2012-13Complete utilisation by : 2012-13

ALTERNATIVE SOURSES

• Recycle and reuse of wastewater for non potable uses

• Dual piping system in all new layouts

• Rain water harvesting

• Restoration of lakes to improve ground water table

City Distribution System:

• The city has about 5638 kms of distribution network ranging from 50 mm to 600 mm dia.

• Rechlorination is done at city reservoirs to maintain residual chlorine of 0.2ppm at consumer end.

• Chlorine plants installed in the city - 46 Nos

City Distribution System:

• The city has about 5638 kms of distribution network ranging from 50 mm to 600 mm dia.

• Rechlorination is done at city reservoirs to maintain residual chlorine of 0.2ppm at consumer end.

• Chlorine plants installed in the city - 46 Nos

WATER QUALITY MANAGEMENTWATER QUALITY MANAGEMENT

• Testing physical, chemical and bacteriological Testing physical, chemical and bacteriological parameters of raw water and treated water at parameters of raw water and treated water at treatment plants.treatment plants.

• Testing samples from distribution system in the Testing samples from distribution system in the city.city.

• More than 60 water samples are collected More than 60 water samples are collected every day from the distribution system and every day from the distribution system and tested.tested.

• Two mobile labs with portable testing kit collect Two mobile labs with portable testing kit collect samples from the city distribution system every samples from the city distribution system every day.day.

Customer friendly initiativesCustomer friendly initiatives– Advanced Interactive Voice Response Advanced Interactive Voice Response

System for booking complaints is functional.System for booking complaints is functional.(155313)(155313)

– Electronic Clearance System is introduced.Electronic Clearance System is introduced.

– Customer Charter launched.Customer Charter launched.

– e-Tenderinge-Tendering

– Informative Website in position.Informative Website in position.(www.bwssb.org)(www.bwssb.org)

Customer friendly initiatives

Total No. of KIOSK installed – 74 Nos

24x7 multi-utility fully automated Water bill payment KIOSK KaverEcom - with facilities for collecting cash, cheques and DDs is in operaton.

KaverEcom

Customer friendly initiatives

GEOGRAPHICAL INFORMATION GEOGRAPHICAL INFORMATION SYSTEM (GIS)SYSTEM (GIS)

• All the information of water and All the information of water and sewerage pipeline network, and all sewerage pipeline network, and all other assets of BWSSB has been other assets of BWSSB has been incorporated in GIS.incorporated in GIS.

• It is going to become a major tool It is going to become a major tool for the management of the entire for the management of the entire water supply and sanitation water supply and sanitation system, including revenue billing. system, including revenue billing.

SERVICE TO URBAN POORSERVICE TO URBAN POOR

• 10% of the urban population are living in 10% of the urban population are living in slumsslums

• Water for these slums is supplied through Water for these slums is supplied through public taps free of costpublic taps free of cost

• Few slums are provided with individual Few slums are provided with individual connections which are exempted from access connections which are exempted from access charges except for Rs. 550 towards meter charges except for Rs. 550 towards meter costcost

• The lowest tariff adopted is Rs.6/KL The lowest tariff adopted is Rs.6/KL

Initiatives 1. Unaccounted for water – Pilot project

completed in central part of Bangalore.

2. Setting of Recycling and Reuse of Waste water for potable purpose.

3. Rain water harvesting to meet demand in domestic and industrial buildings.

4. Dual pipe supply of Potable and Non-Potable water in New layouts.

Improving AccountabilityImproving Accountability

• Installation of bulk flow meters on Installation of bulk flow meters on feeder mains in the city feeder mains in the city

• Hand held terminals for spot meter Hand held terminals for spot meter readingreading

• Installation of SCADA to all the main Installation of SCADA to all the main valves, controlling point at Cauvery valves, controlling point at Cauvery BhavanBhavan

Future Water SupplyFuture Water Supply

Projected Population by 2011 : 7.34 MILLIONFuture Demand : 1576 MLDPresent Supply : 900 MLDDeficit : 676 MLD

Proposals:

Augmentation in Phase I : 100 MLDPhase – II Project : 500 MLDTotal Supply After Phase-II Project : 1500 MLD

Augmenting Water Supply to Bangalore City by 270 Million Liters Per Day

Project Started during January 1997

Water Components Commissioned during July 2002

Sewerage Components Completed Except 0.90 Kms Trunk Sewer Works out of 54 Km – completion by September 2006

Expenditure as on MAY 2006 – Rs. 1332.07 Crores

Augmenting Water Supply to Bangalore City by 270 Million Liters Per Day

Project Started during January 1997

Water Components Commissioned during July 2002

Sewerage Components Completed Except 0.90 Kms Trunk Sewer Works out of 54 Km – completion by September 2006

Expenditure as on MAY 2006 – Rs. 1332.07 Crores

Cauvery Stage – IV Phase - 1Cauvery Stage – IV Phase - 1

Bangalore Water Supply & Sewerage Project Stage – IV, Phase – II

Bangalore Water Supply & Sewerage Project Stage – IV, Phase – II

Objective of the Project is to Augment Water Supply by 500 MLD

To provide Sewerage System & Treatment Facility in the peripheral areas of Bangalore city

Distribution improvement (UFW)

Slum development, e-governance and HRD

Objective of the Project is to Augment Water Supply by 500 MLD

To provide Sewerage System & Treatment Facility in the peripheral areas of Bangalore city

Distribution improvement (UFW)

Slum development, e-governance and HRD

Cost Rs. 1759 Crores

Implementation period from 2005 – 06 to 2011 – 2012

Raw Water Transmission : 6.2 km – 2600 mm & 9.6 km – 2200 mm

Water Treatment Plant (WTP) of 500 Mld

Clear Water Pumping Stations : 3 Stages of 14 nos. each to pump 500 Mld of water

Clear water transmission system : WTP to City about 68 Kms - 2700 mm

Trunk mains to ground level service reservoirs in city 115 kms

Supervisory control and data acquisition system (SCADA)

Cost Rs. 1759 Crores

Implementation period from 2005 – 06 to 2011 – 2012

Raw Water Transmission : 6.2 km – 2600 mm & 9.6 km – 2200 mm

Water Treatment Plant (WTP) of 500 Mld

Clear Water Pumping Stations : 3 Stages of 14 nos. each to pump 500 Mld of water

Clear water transmission system : WTP to City about 68 Kms - 2700 mm

Trunk mains to ground level service reservoirs in city 115 kms

Supervisory control and data acquisition system (SCADA)

Water Supply ComponentWater Supply Component

Bangalore Water Supply & Sewerage Project Stage – IV, Phase – II

Bangalore Water Supply & Sewerage Project Stage – IV, Phase – II

Total Estimated Cost of Project

ItemsItems Amount (Rs. Crores)Amount (Rs. Crores)

Water Supply ComponentWater Supply Component 14151415

Sewerage ComponentSewerage Component 667667

Distribution Improvement ComponentDistribution Improvement Component 249249

Management ImprovementManagement Improvement 2525

Slum DevelopmentSlum Development 4949

Price EscalationPrice Escalation 184184

Physical ContingenciesPhysical Contingencies 123123

Interest During ConstructionInterest During Construction 119119

Sub-Total – JBIC Financed PortionSub-Total – JBIC Financed Portion 28312831

Land AcquisitionLand Acquisition 6161

AdministrationAdministration 202202

Taxes and DutiesTaxes and Duties 290290

Total Project CostTotal Project Cost 33843384

Funding For the Phase-2 Project

Total Estimated Cost of the Project – Rs.3384 Crores

JBIC Portion – Rs. 2831 Crores

BWSSB/GoK Portion – Rs. 553 Crores

Bangalore SanitationBangalore Sanitation

Bangalore is blessed with undulated terrain having natural gradient

Wastewater generated flows out of the city in all the four directions

Wastewater generated is collected and conveyed through the sewerage network to the treatment plants for treatment up to Secondary level and disposed to the natural course

BWSSB has setup 12 treatment plants of secondary level of various capacities all-round the city – 718 MLD Capacity

Two Tertiary treatment plants of total capacity 70 MLD has been established and treated water is reused for non potable purposes

About Bangalore sanitary About Bangalore sanitary systemsystem

1920-1920-19501950

Sewerage system existedSewerage system existed

1950-1950-19601960

Major sewerage system constructedMajor sewerage system constructed

1970-1970-19801980

K & C Valley wastewater treatment K & C Valley wastewater treatment plant ( Primary) & V- Valley STP plant ( Primary) & V- Valley STP (Primary)(Primary)

1980-1980-20002000

K & C and V Valley and Hebbal K & C and V Valley and Hebbal upgraded to secondary upgraded to secondary

2000-2000-20102010

CWSS Stage IV Phase I – 7 treatment CWSS Stage IV Phase I – 7 treatment plants & sewerage systemplants & sewerage system

Core Area Sewerage Net work

Major Valleys1 – K & C Valley2 – V Valley3 – Hebbal Valley

#

#

#

%

%

%

%

%

Hebbal Valley

Arkavathi Valley

Vrishbhavathi Valley

Challaghatta Valley

Koramangala Valley

Tavarakere Valley

Katriguppe Valley

Hebbal Minor Valley-1 Hebbal

Minor Valley-2

Agaram SPS

V-Valley STP

Madivala Mini-STP

K&C Valley STPKempambudhi

Mini-STP

Hebbal Valley STP

(38)

(36)

(35)

Area in Sq.Km. (32)

(31)

(19)(16)

(6)

(11)(5)

K-MinorValley

To Mailasandra STP

To Raja CanalSTP

Bellandur Lake

$

Major and Minor Major and Minor ValleysValleys

Area in Sq Area in Sq KmsKms

HebbalHebbal 4848

ChallaghattaChallaghatta 3636

KoramangalaKoramangala 3737

TaverekereTaverekere 1919

KathariguppeKathariguppe 1616

VrishabhavathiVrishabhavathi 3838

ArkavathiArkavathi 3535

TotalTotal 229229

Abstract of sewer statistics Abstract of sewer statistics >400mm>400mmCore AreaCore Area

ZonesZones Total Length Total Length in Km in Km

Existing Existing inside SWD inside SWD

in Kmin Km

No of No of manholes in manholes in

NosNos

HebbalHebbal 4545 99 16501650

K&CK&C 113113 3535 28572857

V ValleyV Valley 8585 1818 17461746

TotalTotal 243243 6262 62536253

Sewers less than 400 mm dia

Length – 3367 KMs

Number of Manholes – 1,21,364

Locations of existing STP`sLocations of existing STP`s

Yelahanka TTP

Jakkur STP

Hebbal STP

KR Puram STP

Kadabeesanahalli STP

K & C Valley STP

Madiwala STP

Kempambudhi STP

Mylasandra STP

V Valley STP & TTP

Nagasandra STP

Rajacanal STP

Wastewater Treatment Plants Wastewater Treatment Plants

Sl. Sl. No.No. LocationLocation

CapacitCapacity in y in MLDMLD

Treatment FacilityTreatment Facility

Under CWSS I, II, III stagesUnder CWSS I, II, III stages

1.1. Vrishabhavathi Vrishabhavathi ValleyValley 180180 Secondary – Trickling Secondary – Trickling

filters filters

2.2. K & C Valley IK & C Valley I 163163 Secondary: Activated Secondary: Activated sludge process sludge process

3.3. Hebbal ValleyHebbal Valley 6060 Secondary: Activated Secondary: Activated sludge process sludge process

4.4. MadivalaMadivala 0404Secondary: UASB + Secondary: UASB + oxidation ponds+ oxidation ponds+ constructed wetlandsconstructed wetlands

5.5. KempambudhiKempambudhi 0101 Secondary: extended Secondary: extended Aeration Aeration

6.6. YelahankaYelahanka 1010Activated sludge process Activated sludge process + filtration+ chlorination + filtration+ chlorination (Tertiary)(Tertiary)

Wastewater Treatment PlantsWastewater Treatment Plants

Sl. No.Sl. No. LocationLocationCapacity Capacity

in MLDin MLDTreatment FacilityTreatment Facility

1.1. MylasandraMylasandra 7575 Secondary – Extended Secondary – Extended aerationaeration

2.2. NagasandraNagasandra 2020Secondary -Extended Secondary -Extended aerationaeration

3.3. JakkurJakkur 1010 Secondary – UASB +Extended Secondary – UASB +Extended aerationaeration

4.4. K. R. PuramK. R. Puram 2020 Secondary – UASB +Extended Secondary – UASB +Extended aerationaeration

5.5. KadabeesanahalliKadabeesanahalli 5050Secondary-Extended aerationSecondary-Extended aeration

6.6. K & C Valley IIK & C Valley II 3030Secondary - Extended Secondary - Extended aerationaeration

7.7. K & C Valley IIIK & C Valley III 5555 Secondary – CMASSecondary – CMAS

8.8. RajacanalRajacanal 4040Secondary- Extended Secondary- Extended aerationaeration

Grand TotalGrand Total 718718Note : V. Valley 60 MLD Tertiary treatment plant is fed by 180 MLD STP

Under CWSS Stage IV Phase IUnder CWSS Stage IV Phase I

Wastewater Treatment PlantsWastewater Treatment Plants

Raw sewage characteristics

Raw sewage BOD : Average 350 mg/lit

Raw sewage suspended solids: Average 400-500 mg/lit

Treated effluent standards ( Secondary)

Treated effluent BOD : < 20 mg/lit

Treated effluent suspended solids : < 30 mg/lit

Tertiary standardsTreated effluent BOD : < 5 mg/lit Treated effluent suspended solids : < 5 mg/lit

Coliforms : < 2.2/100ml

– – Diffused Aeration SystemDiffused Aeration System

– – Diffused Aeration SystemDiffused Aeration System

– – Diffused Aeration SystemDiffused Aeration System

– – Effluent qualityEffluent quality

– – Effluent QualityEffluent Quality

Effluent Quality

V. Valley Sewage treatment Plant - Recycling Plant

V. Valley Sewage treatment Plant - Recycling Plant

V. Valley Sewage treatment Plant - Recycling Plant

VIEW OF V. VALLEY TERTIARY TREATMENT PLANT

YELAHANKA Tertiary Treatment plant (Conventional ASP followed with filtration by

Chlorination)

WATER SUPPLY TO APARTMENTS• Housing complexes having more than 50 apartment ,

_ Dual piping system is mandatory

_ STP is mandatory

_ RWH is mandatory

• GBWAS Charges in CMC areas,

_ 0 to 600 Sft-----Rs.4000/-

_ 600 to 1200 -----Rs. 8000/-

_ 1200 to 2400 -----Rs.16000/-

_ 2400 and above ---- Rs.24000/-

• Prorata charges ---- Rs.200/- Sft

Rain Water Harvesting

•Mandatory for all existing buildings on

40 X 60

•Mandatory for all new buildings on

30 X 40 and above

Population in BBMP Area

YearYear PopulatioPopulation in Lakhsn in Lakhs

Water Water Demand Demand in MLDin MLD

Water Water supply supply in MLDin MLD

Short Short fall in fall in MLDMLD

20012001 53.7953.79 870870 540540 330330

20072007 75.0075.00 12191219 870870 349349

20152015 88.0088.00 17201720 14701470 250250

20212021 100.00100.00 21252125 14701470 655655

20362036 125.00125.00 25502550 14701470 10801080