The water source of Shirakawa River is highly transparent and of good quality. For hundreds of years, the clear spring water has provided the main drinking water and irrigation water for the residents of Higo Plains. The spring water comes from mountain streams and creeks, and converges into a spring. Standing by the spring, you can clearly see the surging bubbles. It is said that the accumulation volume is as high as 60 tons per minute, and the water quality is excellent. The "SESERA" hydrogen water guide claims to be the freshest spring water directly extracted from the Shirakawa River source, and refined into healthy water after multiple processing procedures.