To solve a problem that an outdoor playground is puddled with rainwater after rain and causes a considerable delay for a start due to the necessity for ground maintenance, and a satisfactory play cannot be performed because a game must be carried out even under a poor ground condition due to the limit of a schedule, particularly in a tournament for determining a representative, and that the cleaning of socks and the bottom of trousers may be in vain because they get wet in a puddle on a floor of a public toilet or the like that is formed after washing the toilet or the like.

This water absorber is constituted to rotate a roller with a water absorptive sponge 2 stuck to a punching material cylinder 3. Moisture absorbed in the puddle 102 is wrung out by a sponge wringing roller 1 installed at the top of the water absorptive sponge 2. Wrung-out water moves to the inner periphery of the punching material cylinder 3 through a large number of through holes formed in the cylinder 3, and a water guide roller 4 is attached to the top of the inner periphery in a form of holding the punching material cylinder 3 so that the water is efficiently stored in a water storage tank 6.