Due to global population growth and urbanization, water problems are expected to increase in severity. In response to this expectation, Smart Water Management that refers to implement intelligent water information systems by IT convergence is considered a new paradigm. In this paper, we try to study the Smart Water policy, especially Smart Water Grid, and technology development trends in major countries. On the basis of results from the comparative analysis with Smart Grid in power sector, we evaluate political. legal, economic and technological feasibility related with the Smart Water Grid. In the conclusion, we suggest some strategic recommendations for the promotion of the Smart Water Grid.