Being believed to remove bad vibes, wakamizu was used to make an altarage to Toshigami (god of the incoming year), to make a family meal, to rinse out one's mouth and to brew tea after it was offered at a household Shinto altar.
若水は邪気を除くと信じられ、神棚に供えた後、その水で年神への供物や家族の食事を作ったり、口を漱いだり茶を立てたりした。