Multi-criteria resilience assessment of urban water supply and sanitation systems to climate change and extreme events : a case study in Bangkok, Thailand | |
| Author | Ancheta, Maria Anjelica P. |
| Call Number | AIT Diss. no.WM-25-04 |
| Subject(s) | Water-supply engineering--Thailand--Bangkok Water-supply--Climatic factors--Thailand--Bangkok Water quality--Thailand--Bangkok |
| Note | A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Water Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | Climate change increasingly threatens the reliability of urban water supply and sanitation systems, affecting both water quality and quantity in relation to the economic and social well being of many cities worldwide. While previous studies and global assessments have emphasized climate adaptation in infrastructure, few have developed integrated, system-wide approaches that jointly evaluate the resilience of water supply and sanitation under changing climate conditions. Guided by the evolving definitions of resilience in the IPCC’s Fourth to Sixth Assessment Reports and informed by systems-thinking, this study develops and applies an Urban Water Supply and Sanitation Resilience Framework (UWSS Resilience Framework) for the Bangkok Metropolitan Area, Thailand. The framework was designed through a systematic literature review using the PRISMA method to identify relevant dimensions, indicators, and variables, and was weighted through an Analytical Hierarchy Process (AHP) survey of international experts. It comprises three dimensions: (1) Water source and urban waterways, (2) Infrastructure operations, and (3) Quality of service. To support the assessment, hydrologic modeling of the Chao Phraya River Basin was conducted using MIKE+ software and calibrated at the C2 Station in Nakhon Sawan. Climate change projections were produced from bias-corrected General Circulation Models (GCMs) under SSP2-4.5 and SSP5-8.5 scenarios to estimate future streamflow at the Samlae Intake Point until 2100. These analyses were complemented by water-quality assessments (2000–2024) of Bangkok’s creeks and klongs, and by interviews with the Metropolitan Waterworks Authority (MWA) and Bangkok Metropolitan Administration (BMA) to address infrastructure and service-level indicators. Results show an overall GOOD resilience rating (3.29/4), with LOW for Dimension 1, GOOD for Dimension 2, and EXCELLENT for Dimension 3. Strengthening Bangkok’s climate resilience requires focused actions on water-source protection and development, infrastructure upgrading, data transparency, and service expansion. Future research should extend the framework by incorporating social and organizational indicators, such as staff competence, governance, and local expertise, to complement the technocratic assessment and promote balanced, climate-resilient urban development. |
| Year | 2025 |
| Type | Dissertation |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Shrestha, Sangam |
| Examination Committee(s) | Thammarat Koottatep;Shanmugam, Mohana Sundaram |
| Scholarship Donor(s) | His Majesty the King of Thailand |
| Degree | Thesis (Ph.D.) - Asian Insitute of Technology, 2025 |