An evaluation index system was established to assess wastewater reclamation and reuse project.Considering the different characteristics and main factors of the centralized and decentralized wastewater reclamation and reuse engineering,the index system included 13 individual indices in five categories: water quantity,water quality,techniques,economy and management.After the index system had been established,an BP neural network model was used to evaluate a typical project in Xi'an.Results were in good agreem...