Mikveh

n. Jewish ritual bath in which people immerse themselves on special occasions; Jewish ritual bath in which Jewish women immerse themselves to attain ritual purity following menstruation or after giving birth

Mikvah (or mikveh) (; plural: mikva'ot or mikves) is a specific type of bath designed for the purpose of ritual immersion in Judaism. The word "mikvah", as used in the Hebrew Bible, literally means a "collection" - generally, a collection of water. Several biblical regulations specify that full immersion in water is required to regain ritual purity after ritually impure incidents have occurred. Most forms of impurity can be nullified through immersion in any natural collection of water. Some, such as a Zav/Zavah, however require "living water," such as springs or groundwater wells. Living water has the further advantage of being able to purify even while flowing as opposed to rainwater which must be stationary in order to purify. The mikvah is designed to simplify this requirement, by providing a bathing facility that remains in ritual contact with a natural source of water.
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