The Williamsburg Mikva is a traditional Jewish ritual immersion facility (mikveh) located in the Williamsburg neighborhood of Brooklyn, New York City, primarily serving the Satmar Hasidic community, one of the largest ultra-Orthodox Jewish groups in the area. It facilitates religious purification rituals essential to Orthodox Judaism, including immersions for women following menstrual cycles (niddah), prior to marriage, for conversions, and for men before holidays like Yom Kippur. The mikva operates within the insular Satmar Williamsburg faction, led historically by Rabbi Aaron Teitelbaum's group, and reflects the community's strict adherence to religious law (halakha). It has also been used as a meeting point for the community's Vaad Hatznius (modesty committee), a vigilante-like group that policed women's dress codes and behaviors. The facility drew significant media scrutiny during the 2012-2013 criminal trial of Nechemya Weberman, a unlicensed therapist and community enforcer convicted on January 23, 2013, of 59 counts of sexual abuse against a 12- to 15-year-old girl from the Satmar community. Prosecutors revealed that the victim was brought before the committee at the mikva multiple times and subsequently referred to Weberman for abusive 'counseling' sessions, exposing allegations of community cover-ups and resistance to secular authorities. No specific founding date or formal corporate structure is publicly documented for the mikva, which likely operates under the auspices of local Satmar synagogues or rabbinic oversight as a community religious service rather than a standalone organization.