This report made by Nippon Onsen Research Institute Co., ltd. is based on the data from Natural Environment office, Ministry of the Environment in 2006 (released in 2007).

 
   
 

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  “Quantity of fountainhead” shows the total of 19,237 utilized fountainheads and 8,917 unutilized fountainheads. Therefore, 31.7% of the whole is unutilized.  
   
 
 
 

Nippon Onsen Research Institute Co., Ltd.