Abstract: Immersion (tevillah) in a special pool of water (mikvah) is an ancient Jewish ritual act of purification. Rumors of personal healing through mikvah immersion are often presented as Jewish folklore or urban legends. Yet, my research shows that a surprising percentage of immersing respondents –both Orthodox and non-orthodox— have experienced mikvah immersion as either spiritually, emotionally, psychologically, or physically healing. My study investigates what it means to experience mikvah as healing; and whether these experiences correlate with other attitudes and personal practices that signal patterns in how Jews think about Self, purity, wellbeing, and healing. I conducted a survey (N=283) and 34 in-depth interviews in the United States, and an additional survey (N=239) in the United Kingdom –to determine how relevant the U.S. findings could be for the aspiring mikvah organization, Wellspring UK, that plans to incorporate mikvah as a central modality of care in a center for wellbeing in London. I interpret these findings through a ritual ecological analysis –integrating embodiment, ritual studies, history, and religious studies— that centers participants’ sensory-emotional descriptions of their immersion as centering and affirming, in the midst of personal suffering. I then seek to understand how immersers interpret these sensory experiences by framing their mikvah stories in the historical context of new conceptual constructs about body, self, wellbeing, healing, and purity that emerged from multiple Jewish engagements with the American Great Awakening (1960-1990). That sensory experiences of centering and affirmation are identified as healing reflects a holistic self-concept, observed among the majority of participants –immersers and non-immersers alike. Specifically, the contemporary Jewish self is a holistic body-self, integrating physical, spiritual, emotional, psychological, and relational aspects. Such holism means that upset in one aspect of the self produces difficulties in one or more of the other aspects. Thus, maintaining one’s sense of wellbeing requires continual balancing and rebalancing, a self-making project that dovetails with respondents’ high value for an emergent ideal of spiritual purity, defined as the alignment of one’s inner values with one’s outer speech and actions. Together, wellbeing and spiritual purity constitute an ideal state of radical shalom, as experienced during healing mikvah immersions.