Easy framework for WASH - Article in Journal of Water Policy

Easy framework for WASH - Article in Journal of  Water Policy

Sustainability assessment of urban water planning using a multicriteria analytical tool – a case study in Ningbo, China Lie Wua , Xianqiang Maoa,*, Xiaoming Yangb, Zhibo Lib and Songchuan Fangc a School of Environment, Beijing Normal University, Beijing 100875, China *Corresponding author. E-mail: maoxq@bnu.edu.cn b Ningbo Water Environment Project Management Office, Ningbo, Zhejiang Province 315000, China c Water & Environment Division, Mott Macdonald Consulting Beijing Ltd, Beijing 100029, China Abstract Sustainable urban water infrastructure planning has become one of the major concerns when facing the growing urbanization pace and challenges in China. The paper aims to integrate the modern decision support tools in urban water supply system (WSS) planning and programing.

A case study of Ningbo, China is presented to assess the cost-effectiveness and sustainability of the selected WSS. A multi-criteria sustainability analysis (MCSA) approach is adopted for dealing with the trade-off among a spectrum of criteria including those related to lifecycle costing and the triple bottom line concept. The results show that the three options for the WSS have the priority values 0.571, 0.632, and 0.631 and the second option is the best fit, while the first is least preferred owing to the high water–energy nexus. The analysis on the sensitivity is conducted revealing that decisionmaking is susceptible to the criteria weights and some quantification issues when assessing environmental and social sustainability. The third option might be a reversal of decision, against the second, depending partly on the criticality of relevant criteria weights. Finally, the MCSA approach is demonstrated to be employed not only for planning but for detailed design options’ comparison later on and for managerial decision-making during operation.