"Oino Shimizu" (御井の清水)

A bottled water has been popular recently, even though people can drink tap water in Japan. About myself, I have been drinking bottled water from about 10 years ago, despite I know I can drink tap water...
And recently many local natual bottled water has been available, and some water industry operated by local bodies (ex. Osaka city, Kobe city) have got into bottled water market to cover decreasing demands of tap water.

When I went back to Minamiawaji in this summer, I have found "Oino Shimizu" (in Japanese "御井の清水") bottled water sold at Fukura port vending machines.
As I remember, this product has opened to markets very recently (within 5 years, I think).

"Oino Shimizu" is coming from the Rokko mountain group, and stated as "hallucinatory water" in "Kojiki" (A Record of Ancient Matters). 
In Kojiki, the Emperor NINTOKU (A.D.313-A.D.399) composed a poem,

『旦夕淡路島の寒水を酌みて、大御水献りき』
(In the morning and evening, lave cold water of Awaji island, and dedicate it to Imperial.)

Now Sansui Co., Ltd. produces and sells the bottled water.
You can find it at some vending machine in Awaji island, or buy it on the web.