Status : Verified
| Personal Name | To, Mary Joy E. |
|---|---|
| Resource Title | Site Suitability Modeling for Domestic Wastewater Treatment Plant (WWTP) using Multi-Criteria Decision Analysis (MCDA) and Geographic Information System (GIS) |
| Date Issued | 8 January 2026 |
| Abstract | Domestic wastewater remains a major contributor to water pollution in the Philippines, with sanitation coverage still alarmingly low despite the enactment of the Philippine Clean Water Act of 2004. The 2022 Philippine National Demographic and Health Survey reported that only 5.6% of households availed septage treatment services, while only 3.1% are connected to a sewerage system. Delays in the expansion of sanitation infrastructure are largely due to limited technical and financial capacity of implementers and the perception of wastewater treatment as a low demand, yet expensive investment. This study presents a practical decision support system that addresses these barriers by helping implementers identify optimal sites for domestic wastewater treatment plants (WWTPs). The combination of Multicriteria Decision Analysis (MCDA) and Geographic Information System (GIS) provided an approach that balances cost-efficiency, hazard exposure, and compliance to public and environmental health regulations. Inputs from sanitation specialists, national government agencies (DPWH, DILG, DENR, LWUA), and key stakeholders (PAWD, LGUs, Water Districts) were critical in establishing a site suitability criteria specific for domestic WWTP. The developed suite of decision support tools includes: 1) an ArcGIS toolbox that automates geoprocesses to produce suitability maps, streamlining workflows and reducing manual errors and processing time; and 2) a macro-enabled weighting and site evaluation toolkit that guides users in setting priorities, deriving weights, comparing site options, and generating detailed site suitability reports that highlight low-scoring factors for mitigation. The results emphasize the importance of giving higher weights to technical factors to ensure cost-effective solutions, while still incorporating hazard exposure and public and environmental health considerations. The developed system simplifies complex decision-making and provides compromise in evaluating confl |
| Degree Course | MS Environmental Engineering |
| Language | English |
| Keyword | Wastewater Management, Site Suitability, WWTP Siting |
| Material Type | Thesis/Dissertation |
Preliminary Pages
686.89 Kb
Category : F - Regular work, i.e., it has no patentable invention or creation, the author does not wish for personal publication, there is no confidential information.
Access Permission : Open Access