Abstract
Drinking water catchments (DWC) are under pressure from point and nonpoint source pollution due to the growing human activities. This worldwide challenge is causing number of adverse effects, such as degradation in water quality, ecosystem health, and other economic and social pressures. Different evaluation tools have been developed to achieve sustainable and healthy drinking water catchments. However, a holistic and strategic framework is still required to adequately consider the uncertainty associated with feasible management remedies of surface water quality in drinking water catchments. A strategic framework was developed to adequately consider the uncertainty associated with management remedies for surface water quality in drinking water catchments. A Fuzzy Multiple Criteria Decision Analysis (FMCDA) approach was embedded into a strategic decision support framework to evaluate and rank water quality remediation options within a typical fixed budget constraint faced by bulk water providers. The evaluation framework consists of four core aspects; namely, water quality, environmental, economic and social, and number of associated quantitative and qualitative criteria and sub-criteria. Final remediation strategy ranking was achieved through the application of the Euclidean Distance by the In-center of Centroids (EDIC).
Highlights
Drinking water catchments (DWC) are sites where fresh water is collected and used for drinking water supply purposes
A Fuzzy Multiple Criteria Decision Analysis (FMCDA) approach was embedded into a strategic decision support framework to evaluate and rank proposed water quality remediation strategies within a typical fixed budget constraint faced by bulk water providers
The first node usually represents the alternative or the option to be applied, while the branches represent the set of different portfolios or scenarios from each remediation strategy
Summary
Drinking water catchments (DWC) are sites where fresh water is collected and used for drinking water supply purposes. Most of the researchers have completed evaluations for the purpose of assessing management strategies to meet specific water quality standards and/or to meet sustainability standards for a river or catchment. None of these studies have comprehensively considered the assessment of different quantitative and qualitative criteria and management remediation strategies in DWC. To the best of our knowledge, there is presently no flexible and comprehensive DWC mediation option evaluation framework that includes the following key elements: (i) evaluating NPS of pollution controls to manage surface water quality in DWC considering multi-criteria and uncertainty;. Readers should note that this current work is part of an ongoing study to strategically evaluate remediation options for drinking water resources
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