1) A report by NITI Aayog and BBC states that Bengaluru will run out of groundwater by 2020 due to overextraction. 2) Bengaluru historically relied on a shallow aquifer for water but open wells tapping this source are now closed as the water table has dropped significantly. 3) Extraction of groundwater through deep borewells is not sustainable and traditional well digging communities are promoting recharging the aquifers through methods like recharge wells to improve the city's water security.

1. BANGALORE TO RUN OUT OF GROUND WATER BY 2020 :
NITI AAYOG/BBC

2. bengaluru & water

3. traditional open wells
At first, All was Well

4. Bengaluru: decades ago

5. modern Bengaluru

6. borewells

7. the demise
Wells and Lakes : Shallow Aquifer

8. extraction

9. the math works out
+ 970mm of rain annually
+ 2500-3000 MLD
endowment
- 600 MLD extraction
+ 100 MLD - 200 MLD
recharge : FIX this!!
+ reduces Flooding

10. here is what we can do

11. recharge wells

12. Digging an
open well
step by step
First the soil
is
excavated
to the
desired
depth. You
may
encounter
rock or
water
inflow/seep
age.

13. The soil is
excavated to
the required
depth
Concrete
rings are
lowered in
one by one
into the well
Aggregate or
jelly stones
line the gaps
between the
rings
This
reinforces
the well
structure

14. in a gated community

15. clean up old wells - and use
them for recharge

16. in a home

17. MILLION WELLS PROJECT
Over a 100k already!

18. the Bhovi community
traditional well diggers

19. spreading awareness

20. ON SOCIAL MEDIA
Offline, and even online!

21. helping map the city’s
aquifers

22. COMING TOGETHER
Driving a common agenda together

23. It Takes A Village….
http://bengaluru.urbanwaters.in/

24. WATER SUFFICIENCY = RESILIENCE
A MILLION WELLS AND THE WELL
DIGGERS FOR BENGALURU
Shubha Ramachandran
water@biome-solutions.com

26. GROUND WATER
- historically dependent
on the shallow aquifer
- shallow ground water –
a distant memory
- open wells – now closed
/ filled up/ dust bins
- borewells as deep as
2000ft : no water , hard
water
- traditional well digging
community - Bovis

27. BENGALURU

28. groundwater recharge