Abstract-With the need of environmental conservation and the global climate change, the issue of water resource use becomes one of the main environmental problems. Based on the prestudies for sustainable human habitats by using the expert questionnaires, the water resources and public perception are the most two main factors to influence the sustainability of metropolitan area at Taiwan. Therefore, the study focuses on the public identity for understanding of the water resource, including recycling, reuse and household uses, at Taichung. It also pays attention to survey the public identity for the satisfactions for the present water policies and the future possible sustainable utilization strategies. The user willingness to pay for the sustainable water resource use is valued by using the contingent valuation method and the results is showed as the public supporting standard for the possible strategies. For the research process, there are 574 valid questionnaires by using the face to face survey and structural questionnaires, and the pre-test is suitable for the final survey. The major results show that the government need pay more attention for the improvement of related works and the efficiency, although the people feel more satisfied with the late improvement strategies from the Taichung metropolitan authority. In addition, the public has more abnegation for the water recycling, re-use, and the water fee advance for the household using without the information that the water strategies may be related with the climate change. Otherwise, they have general acceptance and the identification of policy supporting. However, more than 70% people report the government cannot show the enough information to gain the public supporting by mass media. In addition, the CVM model is quite suitable for the future predict for metropolitan sustainable water use.