With the rapid urbanization and economic development in Changsha

water resource scarcity has become a critical constraint to sustainable development. Reclaimed water utilization is an effective approach to alleviate water shortage

improve water environment

and promote circular economy. This study investigates the current status of reclaimed water utilization in Changsha through field surveys

data collection

and expert interviews. A comprehensive index system is established to analyze the influencing factors from four dimensions: technical

economic

social

and policy factors. The analytic hierarchy process (AHP) is employed to determine the weight of each factor

and the fuzzy comprehensive evaluation method is applied to assess the reclaimed water utilization potential of different districts in Changsha. The results show that policy support

water price mechanism

and public acceptance are the most significant influencing factors. The reclaimed water utilization potential in Changsha is divided into three grades: high potential areas include Wangcheng District and Changsha County; medium potential areas include Yuelu District and Kaifu District; low potential areas include Furong District

Tianxin District

and Yuhua District. Finally

targeted countermeasures and suggestions are proposed to promote the large-scale utilization of reclaimed water in Changsha

providing scientific basis and decision support for water resource management and urban sustainable development.