Water Scarcity and Water Policy in Mexico
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Water Scarcity and Water Policy in Mexico Gianluca Facchini Master thesis for the Master of Philosophy in Economics degree Department of Economics University of Oslo 04.05.2009 Acknowledgements Firstly, I am deeply grateful to my supervisor, Prof. Olav Bjerkholt, for having supported me everytime I needed with useful advices and lots of patience. I would like to thank ATL Interamericana S. de R.L. de C.V, and in particular Ernesto Krüger, Rubèn Isaac Leòn Ramos and Leonardo Montes Vizueth for all the advices and assistance you gave me in Mexico over the last two months. I also thank all my friends for having shared with me nice moments here in Norway, even through the most unpleasant periods. A special thank goes to my friend Tessa Lyn Anderson for her priceless proofreading at the last minute. All remaining errors are mine, of course. Gianluca Facchini April, 2009 i Dedication I dedicate this work to my family, for the unconditional love they gave to me and the unceasing moral support over these two years of studying, and to Mariana, my girlfriend. Gianluca Facchini April, 2009 ii List of abbreviations CEHI: Caribbean Environmental Health Institute CNA: Conagua, Comision Nacional del Agua CONAPO: Consejo Nacional de Poblacion GDP: Gross Domestic Product DF: Districto Federal ED: Electrodialysis EEA: European Environmental Agency FAO: Food and Agriculture Organization FCE: Comision Federal de Electricidad HDI: Human Development Index IDA: International Desalination Association IMF: International Monetary Fund INE: National Institute of Ecology INEGI: Instituto Nacional de Estadistica y Geografia IRWR: Internal Renewable Water Resources LAN: National Water Law MSF: Multi-stage flash evaporation NF: Nano filtration PEMEX: Petroleos Mexicanos PIB: Producto Interno Bruto (GDP in English) REPDA: Registro Publico de Derechos del Agua RO: Reverse Osmosis SAGARPA: Secreteria de Agricultura, Ganaderia, Desarrollo Rural, Pesca y Alimentacion SECTUR: Secretaria de Turismo SEMARNAT: Secretaria de medio ambiente y recursos naturales SMN: Servicio Meteorologico Nacional UN: United Nations UNAM: Universidad Nacional Autonoma de Mexico UNESCO: United Nations Educational, Scientific and Cultural Organization USA: United States of America VC: Vapor compression WRAP: Water Right Adjustment Program WUA: Water user association ZMCM: Zona Metropolitana de la Ciudad de Mexico iii List of figures Figure 1. Historical monthly mean normal precipitation (1941-2006) ................................................ 10 Figure 2. Distribution of water in the country in proportion to the population and the GDP (PIB in Spanish) ................................................................................................................................................ 11 Figure 3. Hydrological-Administrative regions of Mexico .................................................................. 12 Figure 4. Water uses in Mexico. Evolution of water availability in Mexico ....................................... 13 Figure 5. Average availability in different countries ........................................................................... 13 Figure 6. Map of the over-exploited aquifers ....................................................................................... 16 figure 7. Superficial waters .................................................................................................................. 17 Figure 8. Comparison between the land surface of irrigation and technified rain-fed districts ........... 19 Figure 9. Impact of energy consumption Tariff for groundwater pumping in Mexico ........................ 24 Figure 10. Geographic distribution of the electricity subsidy in agriculture, 2002 .............................. 27 Figure 11. Relationship between the volumes extracted and granted .................................................. 28 figure 12. Distribution of the irrigation technologies ........................................................................... 30 figure 13. Effects of the subsidy for the aquifers ................................................................................. 31 iv List of tables Table.1 Main economic indexes of Mexico, 2001-2007 ........................................................................ 5 Table.2 Tourist visitors in Mexico, 2007 ............................................................................................... 7 Table.3 Hydrological and Administrative areas ................................................................................... 12 Table.4 Hurricanes in Mexico, 1980-2006 ........................................................................................... 14 Table.5 Number of over-exploited aquifers ......................................................................................... 16 Table.6 Wastewater produced, treated and re-used, 1995-2012 .......................................................... 22 Table.7 Wastewater produced, treated and re-used, 2007 .................................................................... 22 Table.8 Users and amount of subsidy of the Tariff 09 ......................................................................... 25 Table.9 Distribution of the subsidy among the users ........................................................................... 25 Table.10 Distribution of the subsidy/Tariff 09 - GINI coefficient ....................................................... 26 Table.11T-student`s distribution between volume granted and volume extracted ............................... 28 Table.14 Average growing population of the metropolitan area (millions) ......................................... 42 Table.15 Average availability of water/Administrative region, 2001-2007 ......................................... 44 Table.16 Total amount of water supplied, 2000-2006 ......................................................................... 44 Table.17 Tariff of water for human domestic use, Federal District, 2006 ........................................... 47 Table.18 Costs, price and benefits of the water utilities....................................................................... 48 Table.19 National Inventory of desalination plants in Mexico (2003)................................................. 56 Table.20 Desalination plants per process and location ........................................................................ 56 Table.21 the cost of desalinated water to selected cities ...................................................................... 58 v Table of contents Acknowledgements .................................................................................................................................. i Dedication ............................................................................................................................................... ii List of abbreviations .............................................................................................................................. iii List of figures ......................................................................................................................................... iv List of tables ............................................................................................................................................ v Table of contents .................................................................................................................................... vi INTRODUCTION. Objectives and Research questions ......................................................................... 1 CHAPTER 1. Overview of the mexican economy: the three sectors ...................................................... 3 1.1 Economic Index summary ............................................................................................................ 3 1.2 The Oil sector ................................................................................................................................ 4 1.3 The Remittance ............................................................................................................................. 6 1.4 The Tourism sector ....................................................................................................................... 7 CHAPTER 2. Statistics of water: Water scarcity in Mexico .................................................................. 8 2.1 Demographic summary ................................................................................................................. 8 2.2 Average precipitation .................................................................................................................. 10 2.3 Distribution of water in the country ............................................................................................ 10 2.4 Water uses ................................................................................................................................... 11 2.5 Water availability per capita ....................................................................................................... 13 2.6 Risks related to meteorological events ........................................................................................ 14 2.7 Basins and aquifers: Solutions for the water scarcity ................................................................. 15 2.8 Superficial waters: Rivers and lakes ..........................................................................................