- Congregation Mikveh Israel Welcome to the World-Wide Web headquarters of Congregation Kahal Kadosh Mikveh Israel! Mikveh Israel, The Hope of Israel, was founded in 1740 and is an unparalleled American Jewish Institution. It has a two-fold tradition that is the synthesis of the Spanish-Portuguese Jewish ritual and the ongoing development of the American Jewish community. Located in Philadelphia, ...www.mikvehisrael.org