Osaka Public University found that there are differences in the use of well water for disasters in Sapporo City (Hokkaido Eastern Iburi Earthquake), Sendai City (Great East Japan Earthquake), and Kumamoto City (Kumamoto Earthquake), which have been affected by major earthquakes since 2010. This was found through research by Professor Takahiro Endo of the Graduate School of Modern Systems Science.
According to Osaka Public University, in Sapporo, Sendai, and Kumamoto, Professor Endo and his colleagues monitored the external water supply status of 3 disaster well registered businesses, and the actual well water of approximately 436 facilities related to the elderly. I asked about usage.
As a result, the number of people registered for emergency wells was highest in Sapporo, Sendai, and Kumamoto, in that order, but the use of well water was in the opposite order, in Kumamoto, Sendai, and Sapporo.Professor Endo et al. cited the lag between power restoration and water supply restoration as the cause of this difference.
In Sapporo City, the water supply was restored soon after power was restored, so there were not many opportunities to use well water.Professor Endo and others believe that this has encouraged the use of well water.
In addition, Kumamoto City has traditionally relied heavily on well water for drinking water, and the city is promoting its urban development rooted in groundwater.For this reason, the use of well water is on the minds of citizens, and it seems that the speed of setting up a well water network in the event of a disaster has increased.
Paper information:[Hydrogeology Journal] Governance of disaster emergency wells in three cities in Japan affected by earthquakes
