When I was a child, we test each other's courage while playing with water. An old man told us that the water would be purified if it flowed down a yard in a river. The play went like this; a friend of mine pees in upper stream. Then, we drink the water a yard down. It takes a courage to drink, because we could see bubbles in the stream once in a while. Children can make it as a play for such a small things.
This purifying character is the essential quality of water, and it is why water is referred as a life force.
Japanese mainland has the mountain range like a spine, and rainfalls flows down according to the deep and steep valley. As the water flows down, they can purify themselves. That is why Japanese water is soft and clean.
Japanese have abluted their body and mind using the clean and fresh water in order to restart, start from the beginning, and reborn. Those rituals have nourished the toughness of people for many years.
I always feel admiration for our predecessors who already found the purifying ability in the water.
I will talk about the purifying ability in details later.
