CLASSIFICATION OF CITIZENS IN TOKYO BY CHOICE OF DRINKING WATER AND THE REASON

Abstract

 We investigated the people's choices of drinking and cooking water and the selection criteria of water using an on-line questionnaire. The survey was conducted for six scenes: home, office, outside at eating, and outside without eating. The target water types of drinking water were water itself, tea (hot/cold), coffee and water for making an alcoholic drink. Both what respondents want to choose and what they actually choose were asked. The choice of drinking water varied by scenes and type of drinking water. The main reasons at home at meal were taste and safety. It was found by the cluster analysis that most people drink what they want to drink though some people drink tap water nevertheless they don't want to drink it. Information they want to put importance were also asked. Many people put importance on simple information like approval by trusted third party, index and standards.