The item concerning the water use was extracted from the questionnaire of the energy consumed executed for the home (1793) that resided in the housing complex of the UR lease of the metropolitan area and Kansai region in 2007, and a regulated factor of the volume of water used in the characteristic of answer home (978) (number of homes and dwelling type, etc.) and years was analyzed.<br>It was confirmed that the number of homes greatly influenced during the result and year about the amount of water used. In addition, it has been understood that neither the income of the home nor the frequency etc. of cooking influence so much while the age of the home everybody, the operation frequency of the washing machine, and the situation of bathing take part in the amount of water used.<br>An amount of water used that considers the investigation and the season and a regulated factor etc. of the amount of water used will be examined in the future because the amount of water used and the bathing situation have the change at the season and time, etc.