Slide 1

Action taken by BWSSB in preventing pollution of Lakes

Bangalore Valley System Well defined valleys

4 Major valleys Koramangala Challaghatta Hebbal Vrishabhavathi Minor valleys Arkavathi, Kathriguppe and Kethamaranahalli (Vrishabhavathi Valley) Taverekere (Koramangala valley)

BANGALORES CASCADING LAKES SERIES

Un planned growth of city Un sewered pockets such as slums and erstwhile CMC areasDamage of main sewersBlockages and overflows in the sewer systemDirect letting out of raw wastewater into storm water drainage system from un-sewered as well as sewered pocketsLack of adequate infrastructure facilitiesDumping of solid waste within the drainage zonesReasons for pollution of Lakes

Sewerage management in BangaloreFacts

Total sewage generated in Bangalore 1000 MLD Sewerage connections 8 Lakh Sewerage networkLaterals (< 300 mm dia) 3367 KmsTrunk Sewers (>300 mm dia) 302 Kms Number of plants 14 Sewage treatment capacity 721 MLD Average Present treatment 453 MLD

Measures for abating Lake PollutionReplacement/ Rehabilitation/ Up gradation of old sewerage net work Laterals and Trunk sewers in core city Creation of New Sewerage Net Work Erstwhile CMC area 2300 Kms 110 Villages 2000 KmsTotal 4300 Kms3) Creation of Additional Treatment capacity to treat wastewater produced in the new areas

Environmental Action Plan A Replacement and Rehabilitation of existing sewers Total length 33 Kms Cost Rs. 47 Crores under NRCP Work is completedOn going projects

On going projectsEnvironmental Action Plan B Replacement and Rehabilitation of existing sewers Total length 70 Kms Taken up under 8 packages Cost Rs. 176 Crores under JnNURM & JICA Project period 2010-2013

On going projectsZero Flow in Hebbal drainage zone Length 19 Kms Taken up under 3 packages Cost Rs. 35 Crores under BWSSB funds & Mega city funds Project period 2010-2013

On going projectsProviding UGD Facilities to 8 ULBs in BBMP area Estimated Cost: Rs. 1098.15 Crore Amount put to bid: Rs. 966.21 Crore Awarded Cost: Rs. 1191.79 Crore Funding:JnNURM - World Bank Project Period: 4 Years Length of pipeline to be laid: 2300 Kms Number of packages:24

On going projects - progressSl No. ULBs Total Pipe laying Qty to be achieved in KmsProgress achieved in Kms Percentage Completion Date 1Yelahanka CMC60.2857.8295.92%Feb-132Byatarayanapura CMC468.81269.4657.47%Feb-143Mahadevapura CMC357.11155.8143.63%Sep-154Krishnarajapuram CMC314.85246.9178.42%Feb-145Bommanahalli CMC466.91260.8455.86%Feb-146Rajarajeshwarinagar CMC 117.2278.3766.85%Feb-147Kengeri TMC57.6214.124.47%Sep-148Dasarahalli CMC470.92374.6179.54%Feb-14TOTAL 2313.721457.9163.01%Sep-15

Construction of new treatment plants 11 Numbers under JICA assistance 339 MLD Capacity with nutrient removal treatment process 300 MLD plant at V Valley at a cost of Rs. 396 Crore Environmental Action Plan C Cost Rs. 360 Crores Length 109 Kms Water supply and Sanitation to 110 Villages Awaiting clearance from Central Government

Future projects

Treatment plants proposed under CWSS Stage IV Phase IINameCapacity in MLDProcess (Including BNR)Raja Canal40Extended Aeration (EA)Horamavu Agara20Sequential Batch Reactor (SBR)Nagasandra20SBRChikkabanavara5SBRKadugodi6SBRKachohalli3Membrane Bio ReactorKengeri60Activated Sludge Process (ASP) K & C Valley60ASPBellandur Amanikere90ASPDoddabele20SBRYellemallappa Chetty Kere15SBRTotal339

MonthAverage daily inflow in ML2006200720082009201020112012January 198.89246.07210.01307.00303.28271.98259.98February233.55247.32216.15316.33318.15251.02277.56March236.92234.59264.28313.87330.55261.97275.28April269.88264.22305.91277.75276.15274.92270.90May310.17276.99294.20251.55323.67251.50249.71June224.34299.24304.44244.93307.66279.12285.55July245.12289.05278.76236.87308.70304.51356.58August253.33327.73301.85275.66306.78285.22354.27September295.74268.33257.06292.62285.64252.68356.13October301.31247.88261.78271.95297.04304.74383.27November288.76238.10264.39265.12301.92309.28379.74December245.59217.67303.05269.91275.20249.00384.29Average258.72263.18272.75276.72302.88274.81320.50

Quantity of used water treated in the existing treatment plants

Monthly Average inflow to treatment plants in MLDTreatment Plant and capacityJanuary-13February-13March-13V Valley 180 MLD68.1767.1874.45Mailasandra 75 MLD47.1448.9952.58Nagasandra 20 MLD7.245.687.34Hebbal 60 MLD STP18.2534.1634.16Yelahanka 10 MLD STP4.285.215.51Jakkur 10 MLD STP4.444.704.91Raja Canal 40 MLD STP 19.0028.0439.35K R Purum 20 MLD STP9.8912.3812.18Kadabeesanahalli 50 MLD27.4436.4336.12K & C Valley 218 MLD144.85148.09149.64K & C Valley 30 MLD28.8928.8130.27Lal Bagh 1.50 MLD1.201.081.08Cubbon Park 1.50 MLD1.061.250.85Madivala 4 MLD3.793.793.79Kempambudhi 1 MLD1.001.001.00Total - 721 MLD386.64426.76453.22

Benefits after the completion of UGD works under KMRP

Erstwhile ULBName of the LakeNo. of lakesYelahankaAttur, Puttenahalli, Yelahanka, Allalasandra, Jakkur, Shivanahalli6BytarayanpuraChikkabanavara, Singapura, Abbegeri, Vidrayanapura, Doddabommasandra, Tindlu, Hebbal, Nagavara, Jakkur, Rachenahalli, Amruthahalli, Hennur, Byrathikhane, Kalkere, Rampura15

Erstwhile ULBName of the LakeNo. of lakesMahadeva pura & K R PurumMunekollal, Sadaramangala, Bhattrahalli, Vengeankere, Ramamurthy Nagar, Basavapura, Yellemallappa Chetty, Kaggadasapura, Vibhuthipura, Varthur, Mahadevapura, Ganghadhar, Doddakundenahalli, Kundenahalli, Rajupallya, Benniganahalli, Sigehalli, Siddapura18

Benefits after the completion of UGD works under KMRP

Erstwhile ULBName of the LakeNo. of lakesBommana halliJaraganahalli, Chunchanaghatta, Puttenahalli, Kothunur, Arekere, Hulimavu, Madivala, Agaram, Varthur, Begur, Chikkabegur, Singasandra, Kadagi Singasandra, Somasundra palya, Garvibhavpalya, Hosapalya16R R Nagar & KengeriMallathahalli, Hosakere, Kengeri, Dubasapalya, Halgevadrahalli5

Benefits after the completion of UGD works under KMRP

Erstwhile ULBName of the LakeNo. of lakesDasarahalliDasarahalli, Doddabidrakallu, Herohalli, Laggere, Shivapura, Pillappakatte, Bagalkunte, Mallasandra, Chikkabanavara, Nelegadaranahalli10Total70

Benefits after the completion of UGD works under KMRP

Thank You