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Value of Clean Water Resources: Estimating the Water Quality Improvement in Metro Manila, Philippines

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  • Shokhrukh-Mirzo Jalilov

    (Institute for the Advanced Study of Sustainability, United Nations University, Tokyo 150-8925, Japan)

Abstract

While having many positive impacts, a tremendous economic performance and rapid industrial expansion over the last decades in the Philippines has had negative effects that have resulted in unfavorable hydrological and ecological changes in most urban river systems and has created environmental problems. Usually, these effects would not be part of a systematic assessment of urban water benefits. To address the issue, this study investigates the relationship between poor water quality and resident’s willingness to pay (WTP) for improved water quality in Metro Manila. By employing a contingent valuation method (CVM), this paper estimates the benefits of the provision of clean water quality (swimmable and fishable) in waterbodies of Metro Manila for its residents. Face-to-face interviews were completed with 240 randomly selected residents. Residents expressed a mean WTP of PHP102.44 (USD2.03) for a swimmable water quality (good quality) and a mean WTP of PHP102.39 (USD2.03) for fishable water quality (moderate quality). The aggregation of this mean willingness-to-pay value amounted to annual economic benefits from PHP9443 billion to PHP9447 billion (approx. USD190 million) per year for all taxpayers in Metro Manila. As expected, these estimates could inform local decision-makers about the benefits of future policy interventions aimed at improving the quality of waterbodies in Metro Manila.

Suggested Citation

  • Shokhrukh-Mirzo Jalilov, 2017. "Value of Clean Water Resources: Estimating the Water Quality Improvement in Metro Manila, Philippines," Resources, MDPI, vol. 7(1), pages 1-15, December.
    • Handle: RePEc:gam:jresou:v:7:y:2017:i:1:p:1-:d:124025
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    References listed on IDEAS

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    Cited by:

    1. Sierda Janine Pauline Sale, 2025. "Assessment of the River Water Quality Parameters of Masuso River and Maalsom River in Goa, Camarines Sur," International Journal of Research and Innovation in Social Science, International Journal of Research and Innovation in Social Science (IJRISS), vol. 9(4), pages 2082-2090, April.
    2. Rodgers Makwinja & Ishmael Bobby Mphangwe Kosamu & Chikumbusko Chiziwa Kaonga, 2019. "Determinants and Values of Willingness to Pay for Water Quality Improvement: Insights from Chia Lagoon, Malawi," Sustainability, MDPI, vol. 11(17), pages 1-26, August.
    3. Xiaoling Zhu & Hio-Jung Shin, 2021. "Financial Analysis for Improving River Water Quality through Introduction of Organic Agriculture," Sustainability, MDPI, vol. 13(5), pages 1-15, March.

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