The source-flowing hot spring channel is particular about "source-flowing". Most Japanese hot spring inns circulate and filter hot springs, and the real "flowing from the source" is of rare value. "Flowing from the source" means that the source that does not damage the ingredients as it is springing up fills the bathtub in a fresh state. Old hot water is not circulated but discharged.
Especially after the fatal accident caused by the circulating Toxic bacteria bath in the hot spring due to Legionella bacteria, the goodness of flowing from the source has been reviewed again.
It is said that there are less than 1% of genuine hot springs flowing directly from the source.
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