Since climate change cannot be controlled, water resources must to be managed in order to adapt the relationship between water supply and water demand to these changes (Poustie et al., 2015). In this sense, water management related just on operational routines, i.e., actions for water catchment and distribution without worrying about water availability in future, has become unacceptable (Wang et al., 2014). Thus, there are two generic strategies to water scarcity: (1) develop new sources of supply, and (2) demand management (Araral & Wang, 2013; Omar, 2013). Demand management refers to solutions to reduce the quantity of water needed for a specific activity. This strategy seeks the efficient of water use by users (i.e. society or economic sectors), reducing and reusing water resources where possible (Brooks, 2006). In this sense, two mechanisms for regulating demand for water are most common: price and non-price mechanisms. The first occurs often through increasing block tariff; and the last includes public education, community mobilization, supply restrictions, and use of technical and engineering solutions (Araral & Wang, 2013). On the other hand, supply management aims, mainly, to increase the water availability. For this, some action should be taken to improve the water supply system, such as: modernization of equipment, expansion of the structure for both water catchment and water distribution, changes in operational and routine procedures (Wang et al., 2014).