The building Judenstr. 26 was the property of the court Jew Joel Alexander (1642, Halberstadt – unknown) in the 17th century. When Berend Lehmann (1661, Essen – 1730, Halberstadt) married his daughter Miriam (unknown, Halberstadt – 1707, Halberstadt) in the 1680s, his father-in-law’s house was the first residence in Halberstadt.

In 1766 the Jewish community acquired the building. At the beginning of the 19th century, the use of the house Judenstr. 26 mentioned as a community demikwe. The “living” water here is a spring. Since religious law does not allow water to flow through pipes, it enters the plunge pool directly through a hole in one of the tiles. In 1891, the simple cellar kikwe was transformed into a spacious bath with a vault projecting into the first floor. Two cabins with bathtubs were now available for body cleansing. In 1908, with the electrification, a pump was installed to change the water in the plunge pool.

From 1935, the use of the sanitary facilities was the main focus, as Jews were forbidden to visit the public baths.

Since the extermination of the Jewish community of Halberstadt, the building was used as a residential house. In the 1950s, the mikvah was dismantled so that the first floor became living space again. The plunge pool in the basement was backfilled.

In 2001, with the establishment of the Berend Lehmann Museum, the plunge pool was uncovered and the spatial situation as it existed until the 1950s was restored.