A PERFORMANCE INDEX FOR ASSESSING URBAN WATER SUSTEMS : A FUZZY INFERENCE APPROACH

In this research, a performance indicator framework was developed to evaluate the degree to which urban water systems successfully satisfied stated objectives. This framework was then applied to the urban water system of Tehran, Iran, to evaluate the ability of the system to achieve its performance objectives. Seven indicators were developed and aggregated into an overall urban water system performance index using a fuzzy inference model. The fuzzy inference model was then used to aggregate the indicators into an overall urban water system performance index.