Actually it is not normal behavior for BP's to crawl into their water bowls. Once in a while they may, but if they do it often its a indication of mites.
Also it is not necessary or recommend to soak your BP for no reason. All Ball Pythons need is at least 50% humidity in its enclosure in order for it to shed properly.
By soaking your BP so often you can strip its skin of oils that it needs to shed. Soaking should only be done as a corrective measure after a poor shed.