Urban Water Balance Analysis by Holistic Approach

Now there are a number of key challenges for management of urban water systems common to all towns and cities, such as providing safety drinking water, protecting from flooding, and efficiently removing wastewater. So we need take a holistic approach to manage urban water system. The water balance model developed in this study provides the framework for evaluating the demand for water supply, the availability of stormwater and wastewater, and the interactions between them. First, different levels of water balance model were presented, which are in house level, property level, district level, and urban level. Second, urban water performance indicators were introduced, which categorized to environmental, economical and social service aspects. At last, SH City was taken as a case to study; and the computing result showed that the water balance model is reasonable and practicable.