It is of significance to examine the factors impacting individual water-saving behavior and their mechanism of action for water demand management, especially for domestic water demand management. To provide a solution to the issues of individual water-saving behavior research with unclear influence mechanisms and subjective modeling decisions, this study provides a novel idea of combining social survey and model study for research on domestic water conservation, introduces complex adaptive system theory to describe the mechanism of action between individuals as well as between individuals and external stimuli, and proposes a general framework for the model establishment and analysis of individual water-saving response research under external stimuli. This study uses Beijing as an empirical city. Based on the analysis results of the survey on Beijing residents’ domestic water use combined with the problems in Beijing’s domestic water-saving efforts, this study constructs water-saving regulation scenarios and corresponding individual water-saving response rules; systematically simulates the change process of individual water use considering the aspects of water price formulation, water use information, and water-saving publicity and education; quantitatively analyzes the influence of these three types of external stimuli on individual water saving; proposes individual water-saving promotion measures; and suggests the three aspects of water price formulation, water use information feedback, water-saving publicity and education.
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