This study investigated the determinants of Tap Water consumption patterns. Socio-demographic variables(gender, family income, education level, residual area) and consumer attitude knowledge(confidence, knowledge, problem experience, risk perception and aesthetic satisfaction)were included in the analysis. Three hundred fifty-nine teachers were participated in this study. ANOVA(Scheffe test), t-test, regression and logistic regression were conducted. The results of this study are as follows: 1. Tap water was consumed by only 1.7%, boiled water prior to drinking by 37.9%, water filtered by 39.8% and bottled water by 19.0%. 2. Consumer attitude knowledge was affected by socio-demographic variables. That is, aesthetic satisfaction was affected by age, risk perception by gender and educational level, confidence by educational level, knowledge by gender and age, and problem experience by age. 3. Logistic regression analysis indicated that age, confidence and aesthetic satisfaction were the determinants of bottled water or filtered water choice. However, risk perception was not a significant determinant. This suggests alternatives to tap water is related to non-risk, or non-safety factors.