Hoheikyo-Onsen is very proud of its pristine and supreme hot springs quality. Our 100% pure natural hot springs is directly poured into baths. There are only very small number of onsen facilities able to use 100% pure natural hot springs in Japan.
Hoheikyo-Onsen is the only one onsen facility which uses no storage tank to temporarily keep hot water. We directly supply hot springs from the ground to baths without bringing water into contact with air.Bringing hot springs from the ground directly, the water cannot be oxidized. Also, we keep it very fresh and clean by consistently pouring new hot springs so that the water needs no sterilization by chlorine, which changes the quality of hot springs. You can always enjoy pristine and supreme hot springs.
Calcareous Sinter forms around richminerals such as calcium carbonate and iron.
Through photosynthesis, some organic compounds in the source of hot springs change their forms to Cyanobacteria. They are very valuable and known as blue-green bacteria which produces oxygen.