FOCUS ON BENGALURU CITY

The

Charting our Water Future” looks at four case studies: China,

Brazil (Sao Paulo), India and South Africa. Below is each countries projected water consumption

Country Current

Supply*

Demand in

2030*

China 618 818

Brazil 18.7 20.2

India 740 1500

South Africa 15 17.7

*Billions of meters cubed

e

5

The challenges before BWSSBa) Diminishing water resources (Arkavathi source) b) Increased Water Demandc) Inequitable distributiond) Water Quality (catchment to consumer)e) Aged Assetsf) High level of NRW (Non Revenue Water)g) Water Securityh) Climate change and it’s impact on water resourcesi) Aged sewer age systemj) Revision of tariffk) New water resources for augmentingl) Capacity building

PLAN SHOWING THREE SOURCES OF WATER SUPPLY TO

BANGALORE CITY

Across the River

Year of

Commission

ing

Optimu

m

Drawal

Assumed

flow

Arkavathy1896 36

Arkavathy 1933 148 50

Cauvery I stage 1973 135 135

Cauvery II stage 1982 135 135

Cauvery III stage 1993 270 270

Cauvery stage IV

Phase I 2004 270 270

Cauvery stage IV

Phase II 2012 500 215

TOTAL 1494 1075

BEYOND CWSS WHAT NEXT ?

In MLD

Bruhat Bangalore Mahanagara palika

Jurisdiction map

Population of Bengaluru has crossed 1.00 croreand is still increaseing very badly

Old resources are completely non dependent ieHessaragatta & TG hally under Arkavathyriver

Water allocation to Bangalore from Cauvery is only 1-85 tmc But GOK has alloted additional 17 tmc from it’sallocation

Ground water situation is very bad , water table depleting 1-2m every year

Hessarghatta Lake

Intake Tower

Sheshadri Iyers Volute Siphon

Hesarghatta Aqueduct

Soladevanahalli Pump house

THIPPAGONDANAHALLI

Water Treatment Plant - T.G. Halli

T.G. Halli Reservoir view

Shiva Anikat

Intake

Loss of water from intaketo treatment plant

Loss of water in treatmentprocess

Loss of water intransmission mains

Loss of water indistribution mains (trunk,feeder, distribution,service mains) due toageing, corrosion, bursts,damage, etc.

Loss of water due toillegal connection, metertampering etc

Tree of water resources recycling

Categories of wastewater reuse

BIRDS EYE VIEW OF YELAHNAKA RECYCLING PLANT

Name & Location of

the plant

Capacity of

the plant

Proposed for which

recycled water to be

used

Status

1. Bangalore Golf

Club

1.00

MLD

Water for Lawns and

other non potable use

Functioning from

last 14 years

2. Lalbagh 1.50

MLD

Water for Lawns and

to replenish water to

the Lalbagh lake

Functioning from

last 7 years

3. Karnataka Golf

Club

1.50

MLD

Water for Lawns and

other non potable use

Functioning from

last 10 years

4. Cubbon Park 1-50

MLD

Water for Lawns of

Vidhanasoudha

Cubbon Park and

other non potable use

Functioning from

last 6years

RECENTLY INSTALLED RECYCLING PLANT AT BANGALORE (UNDER PRIVATE SECTOR)

Toilet – 26.8%

Clothes Washer – 21.7%Shower – 16.7%

Faucet – 15.7%

Bath – 1.7%

Dishwasher – 1.4%

Leaks – 13.7% Other – 2.3%

Source: Awwa Research Foundation (1999)

Wash laundry & dishes with full loads

Always turn off running water

Take shorter showers

Eliminate any and all leaks

Reduce the flow of toilets & showerheads

Report leaking sinks and toilets.

Zero discharge of sewage into Storm Water Drain In view of various Technical, social, institutions problems, present the

sewage generated in the city is not conveyed to sewage treatment plateven though there is adequate treatment capacity of STP’s inside theBMA area.

K & C Valley STP diffused aeration pump

30 MLD STP at K & C Valley

1. Inadequate carrying capacity

2. Corroded & damaged sewers

3. Sewers with reverse / flat gradient

4. Sewers not linked to system

5. Sewers not provided in certain areas

6. Sewers displaced during floods

7. Sewers connected to drains directly

8. Manholes damaged for irrigation

9. Manholes overflowing due to blockage by the solidwastes dumped into manholes

10. Manholes and sewers encroached

Zero Discharge of Raw Sewage into Storm Water Drains

Clean living Environment

Reduction in damaged Assets

Improved water quality in Lakes

Improved Ground Water Quality

Improvement in fish life and aquatic ecology

Improved Aesthetics

Improvement in Public Health & quality of life

Appreciation of property values

Socio-Economic Improvement

Schematic presentation of an onsite grey water

treatment and reuse system for an individual house

GRAY WATER

ALTERNATE SOURCES HAVE TO BE identified such as ;

Reduction of Unaccounted for water

Reuse of waste water (sewage) for potable and non potable uses

Rain water harvesting , micro and macro level

Efficient management of water by utility

Conservation of water by using highly efficient plumbing fixtures by consumers

Industries must embark on water audit