What's the name of the water in the barrel in front of the Japanese hotel?

Hand-washing bowls are essential when entering Japanese hotels. The small wooden bucket used for washing hands is called a hand water bowl. Japan, the capital of Tokyo, is located on the west coast of the Pacific Ocean. It is an arc island country extending from northeast to southwest, including Hokkaido, Honshu, Shikoku, Kyushu and more than 6,800 other small islands, with a total area of 378,000 square kilometers.