In our shul, (Beit Knesset, synagogue,) there is a large electric urn in which water is boiled for several days at a time. The water is not changed every morning, and this presents a problem due to ‘ruach ra’ah, (evil spirit,) and the Alter Rebbe decides in his laws of looking after one’s bodily and mental health”A person should not drink liquids that sat overnight… in a vessel made of metal…” and I heard that in ‘770’, the Rebbe’s shul, there is also a large electric urn and the water is not changed there on a daily basis either. Is it permissible to drink the water from the urn in the abovementioned circumstances?