Piscina

The Piscina (also: Sacrarium ) is in churches a small pool of water with the drain.

In late medieval churches one called a small pool of water with drain device as Piscinium or Piscinie, but sometimes also as Piscina. The term is often used for the drainage device alone that leads through the church wall to the outside. The pools were quite profane for washing hands, cleaning the sacred instrument and to collect excess water. They were mostly sometimes placed to the right of the altar, in the sacristy on the outside wall of the church, so that the remains of the holy water and the Eucharistic particles may still be contained in the cleaning water did not go into the drain but in consecrated ground of lying about the church cemetery could seep.