For decades, since the Chazon Ish’s passing, and his home was dedicated to the use of Talmud Torah Tashbar which operates there, a rumor circulated amongst those in the know that under his house, hidden well underground, lay a mikveh where he would immerse, and purify and sanctify himself before his holy service.

The many years in which the place was hidden from the public, made it impossible to check whether the mikveh still existed. Over the years, one floor after another was added to the Chazon Ish’s home, which became a place of Torah from which the sound of the learning of tinokos shel beis rabban was heard from afar.

Seventy years after his passing, and after the Talmud Torah administration began renovations on the ground floor of the building, experts were hired to find the site of the mikveh. The earth was dug out for an entire month, and after consultation with the Chazon Ish’s students, the place was located where it was estimated that the mikveh would be found.

With great skill and strenuous work by a team of architects and engineers, one layer after another was exposed in the area, and after several days’ work, the principals of the Talmud Torah were summoned to the site. “We’ve found the mikveh,” the experts announced.

The incredible discovery caused great excitement. Who would have believed that the mikveh in which the Chazon Ish immersed would be found? The mikveh, alongside the otzar of rainwater, which had been hidden for decades, had its measurements exactly those of a mikveh according to the Chazon Ish’s requirements, which unequivocally clarified that this was the mikveh hidden under the structure.

The Chazon Ish’s nephew, the Gaon, Rabbi Meir Greineman, was immediately summoned to the site. He burst into tears and related that he remembers with certainty that the taharah for the Chazon Ish, after his passing, was carried out in this mikveh.