There is also an interpretation that an earthenware pot had become a Tsukumo-gami (gods to a variety of things) with soul as the years passed by, and have come to acquire power to manipulate water as it wished.
水瓶が歳月を経た末に魂を持った付喪神（器物が変化した妖怪）で、水を自在に操る能力を持つとの解釈もある。