Diapositive 1

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(No Transcript)
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Quels instruments pour gérer les prélèvements
diffus en France ? Examen à partir de la
nouvelle loi sur leau et denquêtes conduites
dans la plaine du Roussillon Which instruments
to manage individual withdrawals in France? An
analysis based on the new water act and on
surveys conducted in Roussillon Marielle
Montginoul, Cemagref, France
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Introduction

• Which type of instruments to manage individual
  withdrawals?
• Methodology
• State of the art of French regulation
• Interviews with institutional actors
• 76 farm surveys

France, Roussillon aquifer
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Which instruments to manage water demand?
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Which instruments to manage water demand?
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The case of individual irrigation
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The case of urban water pricing (1)
Water price increase
m3 /year
800
700
600
500
400
300
200
100
0
1991
1992
1993
1994
1995
1996
1998
1999
2000
2001
Evolution of drinking water demand for two
households
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The case of urban water pricing (2)
Water consumption (m3/year)
Water pricing P1
Profitability area
Volmin(p)
Groundwater depth
0
dmax
d
Influence of pricing on the profitability of
borehole construction
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Conclusion (1)

• Designing finetune water instruments to be well
  accepted and efficient
• Difficulty to implement instruments before water
  resource becomes overexploited (crisis)
• A preference for increase in water supply
  (interbasin transfers, reservoirs)
• Prerequisite to effective implementation of all
  economic instruments
• Monitoring of groundwater access points
  (boreholes) water use metering
• Legal provision in place but enforcement problems

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Conclusion (2)

• What can we learn from other countries ?
• Control of domestic boreholes (no regulation in
  France if lt 1000 m3/year)
• Illegal boreholes controlling drilling companies
• Collective penalties or associations of
  individual borehole owners how does it work in
  practice ?