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Potential Impacts of Climate Change within Urban Water Management BPLHD, 3 Maret 2011.

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Presentation on theme: "Potential Impacts of Climate Change within Urban Water Management BPLHD, 3 Maret 2011."— Presentation transcript:

1 Potential Impacts of Climate Change within Urban Water Management BPLHD, 3 Maret 2011

2 Metropolitan Bandung An overview of West Java Sympton of CC Potential impacts Conclussions International Cooperation OUTLINE OF PRESENTATION

3 An Overview of West Java Province

4 West Java at a glance 26 administratively urban area 41 sub watersheds Population: 43.03 millions people Water and food supplier for national Sharing border with other provinces

5 Middle term (2008 – 2013) Long Term Plan (2015 – 2025) 1.Increasing protected area 2.Water Quality (highly to moderate polluted) 1.Increasing protected area (45%) 2.Water quality: unpolluted river Increasing public awareness Long and Midterm Planning Development Targets of Environmental Sector


7 7 Government departments (MOE, MOME, MOPW) - Both policy- making and regulatory functions Provincial & Municipal Governments (WJEMA, WJME, WJHS, ETC) - Main regulators: devolved powers Regulators Service Undertakers Municipalities Water supply and sewerage services Autonomous politically State Water Companies Raw Water Cooperation (PJT 2) - Bulk water developer and wholesaler to municipalities, and individual water users (industry) PDAM Bandung and Kab. Bandung - Water supply provider Institutional Governance

8 Decree of President/Minister/Governor/ Major Local Regulation Govt.R/President Regulation Act The Constitution Water Resources Environmental Land use plan Local Government Forestry etc Governing authority Natural resources Water Quality Management Drinking water development Groundwater River, lake Sewerage Water quality Master plan of Citarum designated beneficial water uses for Citarum Norm, standard, guidance, procedure Legal Framework

9 A Case of Metropolitan Bandung

10 Note: Unscale A Briefly Facts of Metropolitan Bandung 5 DISTRICTS 7 SUBWATERSHEDS 7 MILLIONS POPULATION NATIONAL ECONOMIC GROWTH CENTRE OF EDUCATION, INDUSTRY AND SERVICES N Map: Bappenas & Wangsaatmaja, modified, 2010

11 Source: Land-use change – Urbanization (ADB-Package B) 2000 – 2025 in JanJaap Brinckman, Deltares 2010 Urbanization Development (50% People Live In Urban) CITARUM WS (2000) CITARUM WS (2025) URBAN AREA JAKARTA

12 Challenges of Water Supply Management Lack of piped water services in Metropolitan Bandung Percentage of served population (2010)

13 Lack of waste water services in Metropolitan Bandung Bandung: 58 % of te covered area and the percentage of wastewater treated only reaches 24,10 – 50,20 percent in the over 5 last years (PDAM Bandung) Bandung regency: 4 small treament plants covers some sub district Cimahi and sumedang: No centralized WWTP

14 Groundwater Problem OVER EXPLOITATED BY INDUSTRY Groundwater Level (1950) Groundwater Level (2006) Source: IWACO in ARMI SUSANDI, 2010 Photo: Wangsaatmaja, 2004

15 Flood YEARFLOOD AREA (HA) 19319.300 19867.450 19986.200 2010> 7000 (?) It has been occuring since 1931 Various magnitude and frequency of flood The most severe flood: 1931, 1986, 1998 and 2010 (more flood frequently & flood retention) Historical flood in upstream area SUMBER: TRIJONO PBPP CITARUM 2005/ IDA NARULITA LIPI 2006/ SOBIRIN DPKLTS 2006/YADI SURYADI-HAHI 2008

16 Climate Change

17 Sympton of Climate change??? Rainfall Trend in January – February – March 2010 increase 1,5 to 2 times w/ last 2 years COMPARISSION RAINFALL IN UPPER CITARUM (ST CEMARA) 2006-2010 Source: BMKG, analyzed by BPLHD 2010

18 Sympton of Climate change??? Rainfall Pattern of Upper Citarum and Trend of Declining Rainfall Pattern (1999-2009) Source: PSDA and BMKG, analyzed by BPLHD

19 Potential Impacts

20 Rainfall pattern and variability Physical structures Waste water management Water resources: surface and groundwater Agriculture: Cropping pattern Health Other sectors Potential Impacts of Climate Change

21 3 cascade reservoir could not strorage water flowing form the upper area (last year) This year up to feb, the elevation of water is lower than normal water level Needed an adjusment of SOP of 3 cascade reservoirs Potential impacts to physical structures

22 Change of cropping pattern Reduce some great amount of yields due to crop failure Food security Potential impacts to agricultures

23 High level of variability in annual run off caused a great influence of water resource. Dry season, insufficient water to dillute pollutant During wet season, status of river quality still does not meet a designated beneficial water use More stress on groundwater use due to high variability of surface water and domestic use Potential impacts to water resources

24 Variability of wastewater entering the system Decreasing river quality due to less water for dillution Potential impacts to wastewater treatment

25 Conclussions High level of variability in rainfall and runoff pattern caused some impacts to water infrastructures, agriculture, industry, water quality Needed some policy adaptation International Cooperation

26 Proposed Research Research on adaptive mechanism against climate change (adjusment physical structures, drainage, flooding area, waste water, water supply management) Research on adaptive agriculture practices against climate change Research on community adaptive (resilience) Research policy adaptation (incentive-disincentive mechanism, e.g. water recycle in industry) Research on centralized wastewater treatment

27 Research on Sustainable Water Management Policy Project in ASIA, Collaboration research IGES-JAPAN, University of Tianjin (CHINA), AIT (THAILAND) Research Partner in Indonesia for CIDA-AIT SEA- UEMA - Research Partner on Community Based Landfill Monitoring in Leuwigajah, collaboration with ITB, TU-Braunschweig (Germany) and Boku University (Austria) EPCM with Jetro, AOTS & JEMAI, Japan Internship program and expert exchange Research on Water Quality Management Policy, Collaboration research GIST Korea - UNU Japan.

28 Conclusions Climate change will influence urban water and waste water management. Need some adaptive policy to tackle some impacts of climate change. Need collaboration research among research institute – university – government.

29 THANK YOU BPLHD JAWA BARAT Jl. Naripan No. 25 Bandung 40111

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