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April 14, 2026Scientific ReportsOpen Access

Ranking water-scarcity management strategies using the TOPSIS method

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Ranks water management strategies in water-scarce regions, indicating the most effective interventions based on expert evaluations.

The aim is to rank water scarcity management strategies using the TOPSIS method based on expert assessments.
Applied the TOPSIS method for decision-making in water management.
Evaluated three interventions: rainwater harvesting, water recycling and reuse, and desalination.
Gathered input from 50 water-sector experts on criteria importance and performance scores.
Considered five evaluation criteria: water efficiency, cost-effectiveness, environmental impact, social equity, and technological feasibility.
Constructed and normalized a decision matrix to calculate relative closeness coefficients.
Rainwater harvesting achieved the highest relative closeness to the ideal solution ($${C}_{i}=0.489$$).
Water recycling and reuse ranked second ($${C}_{i}=0.471$$).
Desalination was third ($${C}_{i}=0.467$$).
Rainwater harvesting provided the most balanced performance across sustainability criteria.

Yan et al. (2026) studied this question.

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