Piscina

From Latin, meaning "fish pond." The piscina is the stone or porcelain basin (traditionally set in the south wall of the Sanctuary) from which a drain pipe carries to the ground the water used in the ablutions. It is also the most convenient way for many Altar Guilds to dispose of the remaining consecrated wine after a service. The piscina is never, ever to be hooked up to the building's plumbing.