Kameizumi Sake Brewery is located in Izuma, Kochi Prefecture. It was founded in 1897 by eleven volunteers under the name "Humoto Saketen". Their sake was made with water from a spring named the "Eternal Spring" as its waters had never run dry in over three hundred years. They named their first sake "Kameizumi" (亀泉, "Turtle Spring")", alluding to the longevity of the water. In 1917, Kawazawa Tomigo became the first president of Humoto Saketen. Kameizumi Sake Brewery Co., Ltd. was set up in 1965 and is currently run by Kawazawa Tohru. It has six employees.