The Israeli Experience Drought and Water Management
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Learning center: Efficient management of food production systems under water and land constraints Israel Delegation to The CSD-16 United Nations Commission on Sustainable Development NYC, May 2008 1 State of Israel The Ministry of National Infrastructures Water Authority DroughtDrought andand WaterWater ManagementManagement - TheThe IsraeliIsraeli ExperienceExperience Michael Zaide Water Authority CSD16 May 2008 2 1 Israel – General Data Middle East, Semi arid area Established 1948 (this year-60th birthday) Area: 20,770 km2 Regime: Democracy population 7.2 millions. Minorities 20% GDP 31,800 US$/Cap Agriculture 2% of the GDP Soon a member of the OECD 3 Outline Background Water Crises Change of Policy Principles of management and planning Lessons from the Israeli experience 4 2 The Extent of Water Shortage 165 m3/y/capita – 33 % of “Shortage Red Line” by the UN definition 2020 – Domestic and Municipal needs only (~ 1000 MCM) 5 The Extent of Water Shortage ¾ Israel is situated at the edge of the desert. ¾ Within 200 Km rainfall drops from over 700 mm/year to 150 mm/year. ¾ Fluctuations in rainfall are very extreme. ¾ Series of drought years are a common Phenomena 6 3 Map of Aquifers in Israel Kinneret basins Western Galilee Aquifer - 110 650 580 Carmel Aquifer - 25 Eastern basins ? 130 The Coastal Aquifer - 250 Mountain Aquifer - 320 Total annual potential production (average) – 1,555 MCM Negev Basin 70 TBS – 1355 Arava Basin TBS – 1285 2008: 970 (~76% ) 7 Replenishment Data 1932-2008 1600 1400 1200 1000 800 600 400 200 0 1932 1936 1940 1944 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 1996 2000 2004 2008 Kinneret Mountain Aquifer Coastal Aquifer Western Gallilee 8 4 Replenishment Data 1932-2008 Replenishment Data Min : 601 Max: 3687 Average:1391 STD: 464 MCM 4000 3750 3500 3250 3000 2750 2500 2250 2000 מלמ " 1750 ש 1500 MCM 1250 1000 750 500 250 0 1932 1937 1942 1947 1952 1957 1962 1967 1972 1977 1982 1987 1992 1997 2002 2007 שנהYear 9 Climate Change Source: Roger Braithwaite, University of Manchester (UK) 10 5 Projections of Future Changes in Climate ¾ Decrease in precipitation quantities. ¾ longer intermissions between rain events. ¾ Increase in uncertainty of annual replenishment volume of natural water resources. 11 Water Demand per Sectors 2007 Industry 114 MCM Potable (6%) 565 MCM Domestic 766 MCM (40%) Agriculture Other 1180 MCM 615 (55%) MCM 12 6 Main National Water Supply System Haifa Netofa +2 00 +1 Tel Aviv 50 +1 00 +5 108” 0 Pipeline 0 -50 - Sea of 10 0 - 15 Galilee 0 - 20 0 S N 13 Wastewater Treatment in Israel: ¾ No. of large WWTP: 32 ¾ Wastewater ~ 500 MCM/year ¾ 50% - secondary level ¾ 30% - tertiary level The Jerusalem WWTP 2003 14 7 Water Crises 15 Lake Kinneret - Israel’s main surface water source Water level (1962 - 2006) Level and Cl in Lake Kinneret 1969-2006 -208 300 -209 280 -210 260 -211 240 -212 220 -213 200 Salinity (m g/LCl) Lake Level (m-214 ASL) 180 -215 160 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 00 02 04 06 16 8 17 Water Volume in the TBS MCM M C M 18 9 17200 Ramat-HaSharon Aquifer Sensitive Areas 136 133 135 VOCs ( g/L) 132 9.2 TCE m 0.5 1,2-DCA 1999 - 2001 129 134 17000 131 8.5 THM130 0.1 TCE 128 650 TCE 0.9 1,2-DCA 127 River 126 arkon Hayarkon Park 0.2 TCE Hay 16800 125 I 0.5 1,2-DCA Petah Tikva 70 76 124 68 56.1 1,1-DCE71 85 5.3 TCE 0.31 EDB 31.8 PCE 16600 1.1 1,2-DCA59 2.1 1,2-DCA 45 53 55 1.3 1,2-DCA 60 82 123 0.2 1,1-DCE47 50 91.838.4 PCE PCE Tel Aviv 2.2 1,2-DCA 0.2 1,2-DCA81 122 37 0.06 TCE 2132 CCl4 33 40 1.9 1,2-DCA2.5 TCE 1.3 1,2-DCA Azrieli 197 TCE 38 2.4 1,2-DCA 1.5 1,2-DCA 34 80 Center Magen 0.3 1,2-DCA 25 16400 23 118119120 21 27.6 1,1-DCE 1.5 261,2-DCA 24 2.4 1,2-DCA 1.8 CCl4 121 77 30 1,1-DCE224 THM 1.4 1,2-DCA 17 116 78 13 84 1 TCE 17 1,1-DCE 0.54 CHCl311 113 1 10 0.11 CHCl3 23 PCE117 22.6 TCE IV 8.2 TCE 115 73 0.2 1,2-DCE 0.1 1,2-DCE 83 0.8 TCE 1140.1 PCE 7.8 TCE 25.3 PCE 79 18 62 TCE 111 0.5 TCE 7.8 TCE 16200 1.8 1,2-DCA 1.7 PCE 112 110 Ay alon 11.1 1,1-DCE 109 II2.6 THM R iver 16.2 1.1-DCE Safari Park 108 16000 S Hiria 5 THM105 ha 102 103 f 106 ir N 1 1,2-DCA 15 TCE 104III 107 im 1.3 TCE R 97 5.1 TCE 0.15 PCE Bat 99 iv 98 e 100 101 r 96 3 1,1-DCE Yam 0.591 1,2-DCA 15800 0.4 1,2-DCA 0.24 TCE 0.4 1,2-DCA90 93 TRANSIENT DATA 94 89 2392 TCE 95 IN 90 WELLS 86 87 22 TCE 0.6 CCl4 - 0.8 1,2-DCA 88 0.4 1,2-DCA 84 TCE VOCs detected 2 km 5.2 TCE in 82% of wells 15600 12600 12800 13000 13200 13400 13600 13800 19 Water Crises The main reasons: ¾ Consecutive years of drought in the region. ¾ Increased demand by population growth. ¾ Stretching the renewable water sources to the limit. ¾ Quality Deterioration of the natural sources. ¾ Lack of regulation tools. 20 10 What has been done to cope with the water crises ? 21 Water Authority • Establishing the Water Authority (2007) • Centralizing water management authorities from all ministries including the setting tariffs • Management the hole coarse of the water cycle. 22 11 Demand Management 23 Domestic Tariffs Old New Model Model Two tariffs: Tariff 1. First 3 MCM/month- Average cost charged to the (“resultant cost”) municipality 2. The rest- marginal cost Tariffs charge to 3 progressive tariffs Two tariffs the Consumer: Agriculture Tariff also has being changed and was linked to the average 24 cost (desalination cost included). 12 Using Economic Instruments for Sustainable Natural Water Resources Levels of Progressive Extraction Levies Israeli Delegation Delegation Israeli Israeli Delegation Delegation Israeli Israeli Delegation Delegation Israeli Cents per 48.3 c.m. Conservation – – – Australia 19 Australia Australia 19 Australia Australia 19 Australia Levy Preventive Levy Variable Cost - - - 22 March March 2007 22 22 March March 2007 22 22 March March 2007 22 Incentive Levy Constant Cost Variable Cost Variable Cost 1000 hrs. Recommended Production Winter 25 Changing Planning Concepts 26 13 Potable Water Demand 2002-2010 MCM/ YEAR Domestic Industry Agriculture Nature Other Total 2008 766 85 454 7 130 1442 2020 985 93 350 50 208 1686 Annual demand growth rate of 20 MCM/YEAR 27 Sustainable Development Approach “Walking on the Edge” Policy Adoption of sustainable approach to water resources management and development both for quantity & quality 28 14 New Policy - Sustainable Approach 1. Restoring the reliability of the water supply system. 2. Recognition of Nature’s right to water. 3. Rehabilitation of contaminated parts of the Coastal Aquifer. 4. Reclamation of wastewater. 5. Reduction of salinity in reclaimed wastewater. 6. Financial and technical water savings mechanisms. 7. Manufacturing water as one of the ways of promoting peace in the region. 29 Probability Analysis Natural Storage Rehabilitation • Ensemble פילוג האוגר מעל הקו אדום בסוף השנה [מלמ"ק] Forecasting עבור כל הסדרות 3000 • Storage volume 2004 & yearly change 2500 2000 • Operational ערך 2006 ] extraction שווה מלמ 1500 או " ק [ • Water loss גדול 2008 מ - 1000 • Deficits 500 2010 • Desalination 0 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Benefit- cost • שכיחות - % analysis 30 15 Probability Analysis Water Supply Shortage יתרת המים השפירים בחקלאות (מלמ"ק) התפלה - 230 מלמ"ק בשנה, הסתברות למצב קיצוני : 10% 500 400 300 200 100 0 -100 -200 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 - Supply according to demand needed - The capability to supply the water in average (Expectancy) - Safety interval (for desired probability) - Red line 31 Risk Management Climate change : 10-20% water redundancy due to bilateral agreements Water quality deterioration Water Security Water demand (Standard of living) “Uncertainty factor” (0.85) in natural replenishment Building scenarios Building scenarios Implementing stringent limitations for water reliability standards 32 16 Development Program 33 Rehabilitation of the Coastal Aquifer 34 17 Reuse of All Sewage Effluents Effluents Supply systems Shafdan Water Project (SAT) Zfat Sorek 2 Recharge Area Carmiel Reuse ofAco 500 MCM/Year in Yavne2015 4 Recharge Area(340 today) Kishon Ashdod Kfar Tavor Afula Tanach Gat (East) Ashkelon Hadera Heletz Sewage effluentsMain Effluent Pipe for Agriculture – Yarkon Reclamation System 50% of allocations in 2010 Lahich Tel-Aviv Safariya Dvir Nesher Lahav Ayalon-Latrun Ashdod New, stringent standards for Tkuma Hefez Haim Ashkelon Adulam Pithat Shalom effluentZohar quality (37 parameters) Ber-Sheva 35 Brackish Water Desalination 2015 ~ 50 MCM/Year Beer Sheva Protection Belt – “Heletz” Desalination Beer Sheva Protection Belt – Cost ~ 35“Tkuma” US Desalination cent/m3 20 MCM Mishor Rotem Nationwide AlignmentWater Supply for Brine Disposal Systems 36 18 Development of Sea Water Desalination Plants ( 125) Hadera Israeli Delegation Delegation Israeli Israeli Delegation Delegation Israeli Israeli Delegation Delegation Israeli Construction phase.