Rainwater harvesting efforts in Bangalore_BWSSB_2013

The presentation highlights the various initiatives of BWSSB in promoting RWH in Bangalore. These include rain barrels, recharging an open well and other initiations.

1. •City on a ridge line between 860 to 920 metres above
MSL
•City falls into 2 river basins –Cauvery and Palar
•Allocation from Cauvery is limited and therefore a
physical limit to water that can be drawn from river.
•River Arkavathy –
–First source now almost dry and the reservoirs
(Hessarghatta and T.G.Halli) on it no longer reliable.
–35 + 135 = 170 MLD no longer available to Bangalore.
Bangalore Geographical Setting

2. Cauvery river basin –
Bangalore
Redcolouristhe Arkavathybasin, nowdrying

3. Water Sources for Bangalore City
Bangalore
Water Sources for Bangalore
TRANSMISSION PIPE
LINE INSIDE CITY
5 No’s
TRANSMISSION PIPE
LINE FROM WTP

4. Population growth
Population Growth

5. •First city water utility to be set up in India BWSSB -
1964
•First to use an Increasing Block Tariff and also a pro-
poor approach
•One of the highest heads & distance to pump water
100 Kms& 500 M.
•Embodied energy 1.80 units per KL of water to pump.
•One of the costliest waters in India. Production cost
Rs 32/KL
•Now is the notified authority for the city as part of
creation of the Groundwater Authority in the State.
Bangalore Water –Some Firsts

6. •High price of water –both in energy and cost.
•Physical limit to availability 1350 MLD
•Rapid expansion of city 3 million people added
between 2001 and 2011 (present population > 9
million)
•Fast growing non-domestic and industrial demand
from mainly service and manufacturing sectors
•Rainfallpatternwelldistributed,idealforRWH
–AverageAnnual-970mm
–Minimum/Maximuminamonth-2.70/195mm
The Bangalore Context

7. I. Steep Decline in Water levels
2. Decreased Yield in Bore wells
3. Failure of Bore wells.
4. Ground Water Quality Deterioration
Consequence of Over Exploitation of Ground Water

8. Bangalore-The culture of the well

9. Schematic of Roof top RWH

10. The Slogan-EveryRoof A Catchment

11. Direct use of harvested rain water through
sumps
-receiving and delivery piping system
-filters
-sump for collecting rain water
-pumping system
Artificial recharge to groundwater through
scientifically planned structure
Pattern of RWH Programme

12. RainBarrel: Easiest way to begin RWH

13. Recharging an open well

14. Action to Implement Rain Water Harvesting
•Specifications
•Legislative backing Training Programme
•Mass Awareness Programme
•Logistical support and Help desk
•Rain Water Harvesting Theme Park

15. Specifications
-Storage or recharge to be created for
-Roof area -20 litresper square metre
-Paved area -10 litresper square metre
-Recharge well to be a minimum depth of 3 metres
Amendment to BWSSB Act by adding para72-A vide
Gazette notification 2009 making RWH mandatory.
Formation of HELP DESK in with association of KSCST.
Mass Awareness Programmeswith publicity campaign
Training Programmes
Implementation of RWH –Initiation by BWSSB

16. 55 Training programmesin association with KSCST.
1600 BWSSB Plumbers, individuals trained
70 Public Awareness & Abhiyanaprogrammesconducted
Publicity & promotional materials distributed.
T V Programmes& Radio Programmesconducted
RWH system initiated on all Govt. and BWSSB Buildings
including Residences of CM and other dignitaries
More than 51,000 Houses implemented RWH
Initiation by BWSSB

17. A file photo of School Children Jatha

18. 60 Days Rain Water Harvesting 13th Abhiyana
programmeon 14-06-2010

19. 9th Popular Lectures and Success Stories on RWH

20. 50th RWH Training programmeconducted for
Plumbers/Contractors/Others on 12-03-2013.

21. Muniappa, the well digger
who has dug more than
2000 recharge wells
Learning skills have been imparted to plumbers

22. •Recharge well in the channel or off the channel
•Arrangements to remove silt and leaves before water
enters recharge well
•Rate of recharge decide on the number of recharge wells
necessary for the catchment
Open wells and bore-
wells are being revived
Demonstration units

23. Implementation Of RWH in BWSSB Office

24. •Technical details to the visitors and to public via helpline
•Idea is to implement RWH in Scientific way and similar
manner throughout city.
•Collecting Feed back/opinion from Visitors about the
technical details provided
•Conducting Training programmeto Engineers, Architects,
contractors, plumbers etc,…
•Create awareness among public and school & college
students
•Conducting Orientation programmeto Officials.
Functions of Helpdesk

25. Category of Building Recharging
ground
Storage &
Use
Domestic Buildings 33700 3879
Commercial Buildings 5863 860
Partially commercial Building2130 368
Industries 87 27
Apartments 5078 612
Commercial High rise Building172 51
Others 138 23
Government Building 125 55
Total 45153 5875
Status of category wise RWH implemented Structure

26. Rainwater Harvesting Theme Park

27. Rainwater Harvesting Theme Park

28. Aerial View of Theme Park

29. March 2011 to October
2013
During
November-13
Total No of Publics 5061 44
Total No of VIPs 1226 20
Total no of Press Reporter 48 0
Schools
No of Schools 146 4
No of Students 8668 177
College
No of College 57 1
No of Students 1342 40
Total No Telephone calls 1045 3
Feedback Information 81 0
No. of other Govt.
Officials
213
0
Total no of Visitors 16639 281
Grand Total: from Mar-11 to Nov-13 16920
Total visitors from Mar-2011 to Nov-2013—16,920
Sir M.VisvesvarayaRWH Theme Park Visitors

30. Porous
Pathways
Green
storm-
water
drains
RWH Theme Park features

31. Storage
Ground
Recharge
Storage Structures

32. Popup
Global Resource
Leaf SlideReferb india
Rainy
FFL & Sand bed
Wall mounted filters

33. Dr. A. Ravindra, IAS, Ex Chief Secretary, Advisor to the Chief
Minister visited the park on 13-3-2012

34. School children being given a know how on Rain
Water Harvesting at theme park

35. Foreign delegates from Bangladesh, Australia, France, Ethiopia,
Paris on 19-01-2012 at the park with helpdesk engineer

36. •RWH implemented 51000
–Recharging ground 86%
–Storage and use 14%
•Evaluation of 1000 RWH systems by CSD during
January 2012.
–About 90% installations are as per BWSSB guidelines
–Remaining 10% for space constrain could not meet as
per guidelines
Results & Findings

37. •Water conservation and recharge
•Spawned a new industry
•Livelihoods
-Jobs created for plumbers, semi skilled
workers and well diggers
•Innovation
–Spawned design of filters and first rain
separators
–More than 50 filter options are now available
creating an industry
Impact of RWH on

38. •Public have realised value of RWH system for
their needs which reduces dependency on
BWSSB and conventional sources
•People have put in their monies to harvest
rain creating a sense of ownership which will
ensure that they take care of their systems
•Public have understood the value of water
Responsibility

39. Bangalore is one of the important cities where water
problem has escalated because of population explosion
and Growth.
Many cities in country are facing similar problems
Bye-laws are simplest and most likely to be taken up in
all the 213 towns of Karnataka shortly
Rainwater theme park is the first of its kind in country
and will likely to be replicated in many cities as per the
Parliamentary standing Committee recommendation
Programme implemented by BWSSB will go a long way in
serving as a model for other cities in the state and the
country
Replicabilityof Programme

40. •Storing water for future productive views
•Sustainability of Ground Water Resources
through RWH and Artificial Recharge
•Less dependency on stakeholder Water supply
•Reduce stress on surface water
•Availability of water (Water Vende)
•Cost of harvested rain water < Re. 1/KL.
•Simple and long lasting system.
•Improve Ground water Quality
Sustainability

41. •Technical specifications, simple regulations
•Legislative support
•Theme park, first of its kind
•People involvement
•Integrated, cohesive system, easy to
understand
Uniqueness of BWSSB’s RWH

42. SriDIPGogoiM.P.,Hon’bleChairmanofParliamentary
StandingCommitteeon“WaterResources”,visitedParkon
03-02-2013&writinghisopinionaboutthePark

43. GroupphotoofParliamentaryCommitteeon“Water
Resources”,withBWSSBOfficialsandCentralGround
WaterBoardOfficialson03-02-2013

44. Photo : Norma Angelica Hernandez Bernal