Abstract
First, we surveyed the actual condition of living difficulties the people were suffering because of the water supply suspension after the Hyogoken-nanbu earthquake, and extracted the two main measurable factors of daily life difficulty, that is, lack of supplied water and fatigue from water carriage. On the basis of these factors, the formula for quantitative evaluation of daily life difficulty from water supply suspension was proposed. Secondly, using this evaluation formula, we calculated the daily life difficulty in Kobe City after the earthquake. And we also calculated the difficulty anticipated under the plan for emergency water supply that had been worked out by Kobe City authorities following the earthquake. In conclusion, the authors showed the necessity of speedy restoration of complete water supply, and the importance of upgrading the restoration ratio to reduce the inconvenience of daily living in the whole stricken area.