2. Urban India 2001
• 285 million (27.8%) of 1.02 billion
• 5161 cities
• 35 metros - million plus
• 388 large towns
• 4738 small and medium < 10 lakhs
• Projected 368 million by 2012
10. What does urbanization do to
urban groundwater?
•Increase it in the core area through leaking pipes
(50%) and uncollected sewage
•Impair quality through point/non-point pollution
•75% of surface water is polluted by untreated
municipal waste water
13. Groundwater dependence
• 75 % of urban areas in alluvial areas
depend on groundwater
• 80 % of cities in hard rock areas depend
on external surface sources of water
• - Ankit Patel,S. Krishnan
15. Karnataka
• 223 towns
• 46 completely dependant on groundwater
• 137 partially dependant on groundwater
• Bangalore (pop- 6.6million) for example
has 20 to 40 % dependence on
groundwater but is counted as non
groundwater dependant
16. The issue in cities
• Exploding water demand in cities
• Problems of urbanization : water shortage and flooding
• Need to manage water in cities holistically
Case study of a city as an example
17. Realities
• New paradigm required
• Multiple sourcing of water
• Source control for flood management
• Institutional coordination
• People’s participation in solution’s
• More space for ‘softer’ solutions like education
Water tanker Bore well
18. Water in the city
Lakes and tanks :
261 in 1960
81 in 1997
55 in 2000
Lake development authority created to
preserve and enhance surface water
bodies in city
20. Groundwater use
• Impacts surface flows – The Arkavathy
river, 4000 sq km catchment, is now dry.
• 150 MLD supply source is now finished
• This water now must come from
groundwater within the city or from another
surface source
21. Surface water
• 800 mld is pumped 300 meter high
• 80 MW of energy is used
• 200,000 bore wells pump groundwater
from 100 to 300 metre depths
• ? MW of energy
• The gw energy nexus
29. Price will determine use
• Bangalore – Rs 72/ KL for industrial water
• Resulted in resource substitution – about
100 mld less demand on BWSSB , which
presumably came from groundwater
• Open well Rs 3/per KL
• Bore well Rs 15-18 / kl
• Cauvery iv stage Rs 48 per KL
30. The monitoring..
• Each connection is metered
• Each bore well pays Rs 50 /- a month as
sanitary cess . Can bore wells be metered
and volumetrically priced?
• Will people manage groundwater better if
it is cheaper than piped supply?
31. The construct of the problem
determines the solution
• Mulbagal town : 70,000 population
• Arghyam initiative for IUWM
• Grey area according to the CGWB
• Mines and Geology suggests 600 feet as
g.w. depth
• Studies indicate g.w. at 20 feet depthBGL
in a well defined shallow aquifer enough
for Mulbagal’s needs
32. Energy cost
• Approx 60 % of the muncipality’s budget
goes for energy charges towards pumping
costs annually
33. Sustainability
• Socially-
• Technically
• Institutionally- Where are the urban gwi’s?
• Legally- Where is the law?
• Economically- What is the incentive?
• Ecologically- How do we protect aquifers
and base flows?