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Climate change impact on water resources: The Philippines as a case study

Climate change impact on water resources: The Philippines as a case study Carlos Primo C. David, Ph.D. National Institute of Geological Sciences University of the Philippines Diliman Metro Manila Department of Science and Technology Bicutan , Taguig Metro Manila. WATER SECURITY.

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Climate change impact on water resources: The Philippines as a case study

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  1. Climate change impact on water resources: The Philippines as a case study Carlos Primo C. David, Ph.D. National Institute of Geological Sciences University of the Philippines DilimanMetro Manila Department of Science and Technology Bicutan, TaguigMetro Manila

  2. WATER SECURITY adequate quantities acceptable quality protection against water-related disasters The capacity of a population to safeguard sustainable access to adequate quantities of and acceptable quality water for sustaining livelihoods, human well-being, and socio-economic development, for ensuring protection against water-borne pollution and water-related disasters, and for preserving ecosystems in a climate of peace and political stability.” preservation of the ecosystem UN-Water Analytical Brief Water Security and the Global Water AgendaMarch 2013

  3. National Water Security Indicator Governance Index Asian Development Bank. 2013. Asian Water Development Outlook 2013: Measuring water security in Asia and the Pacific

  4. GEOMORPHIC CONSTRAINTS Water and Climate Change, CP David

  5. GEOMORPHIC CONSTRAINTS SRTM Image

  6. GEOMORPHIC CONSTRAINTS Surface water delineation

  7. GEOMORPHIC CONSTRAINTS Watershed delineation

  8. CLIMATE CHANGE IMPACTS David, C.P. et al. 2013. Analysis of Climate Change Impacts on Stream Discharge using STREAM. FAO United Nations.

  9. CLIMATE CHANGE IMPACTS Increased variability

  10. “The impact of climate change in the country will not be in the form of water scarcity but in terms of ever increasing water rates…” IMPACT ON WATER RATES David, C.P. et al. 2010. MDGF 1656 Outcome 1 mainstream climate risk reduction (CRR) into key national & selected local development plans and processes

  11. Provision of Water • Metro Manila Private Concessionaires • 400+ Water Districts serving >20 million people • Municipal-run water services IMPACT ON WATER RATES Level I Supply Level II Supply Level III Supply

  12. Water District size: Average of 5,000 households Average Water Rate per cubic meter: P22 (USD 0.48, 15 BHT)

  13. Water Rates are dependent on: • Governance Characteristics • Efficiency in WD management • Subsidies from the LGU • Connection density • Natural Characteristics • Availability of water • Source of water • Quality of bulk water David, C.P. et al. 2014. Statistical Analysis of Philippine Water District Characteristics and how these Affect Water Tariffs. Water International Journal 39, 1-9.

  14. Findings on Water Rates: 1. Most Water District water are priced accordingly 2. Variability is dependent on physical constraints 3. Efficiency in water delivery is the primefactor

  15. Higher Water Rates are observed in: 1. Small Water Districts with less than 2,000 households 2. Large Water Districts in highly urbanized areas 3. Coastal and highly mountainous regions 4. Large Water Districts relying solely on groundwater

  16. DOST’s Project NOAH noah.dost.gov.ph

  17. Dr. CP David cp.david@yahoo.com noah.dost.gov.ph climatex.ph

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