The Kanakawa Sake that is made from Japan's top 3 remarkable waters
Kanagawa's sake brewing can be divided into 3 areas. The first is【Tsukui Lake Area】that is located in northern part of the prefecture and the vicinity surrounding Sagami Lake and Tsukui Lake. The second is【Atsugi Area】that is located in the central part of the prefecture and is along the Sagami River. The third is 【Hakone Area】that is located in the western part of the prefecture and villages among Tanzawa Mountains.Brewing sake requires a huge amount of water. The water flowing from Tanzawa Mountains, Tohoku's Hakkoda Sugayu Onsen and Yoro Mountains are called the top 3 remarkable water of Japan. The brewery in Kanagawa use the subterranean water of Sagami River and Sakawa River, which are both coming from Tanazawa Mountains, to produce Sake. Therefore, the production of Sake is located along these two rivers.Among the Japan's 100 remarkable waters selected by the Japanese Ministry of Environment, there are many springs of Hadano Basin, such as Shasui Falls and Takizawa River in Yamakita, Kobo's Water, Imaizumi Spring, Soya Shrine and Haruiwao Water in Hadano. This shows the great quality of water from Tanzawa Mountains. Ships stopping at Yokohama and Yokosuka still replenish not only food, but also water nowadays. The reason behind is said that is not only the water's quality is good, but also its quality does not change during a long sea voyage that even crosses the equator.
Reference: Home page of Kanagawa Sake Brewers Association