This report shows the actual situation of the spread and the use of mixing faucet and shower head in housing and the use of hot water, based on the result of web questionnaire. It was indicated that the single-lever mixing faucet recently became widespread about 90%, and that the ratio of using hot water in kitchen differed considerably between about 80% in winter and 20% in summer. It was also suggested that though they did not need hot water in summer and middle season, about a single-lever mixing faucet, there was high ratio of using the lever at the position where hot water was mixed.
