Taamei Haminhagim 423 explains the custom of women to draw water immediately when they hear “Borchu” after Shabbos. In short it says,
In Agada it says that the Well of Miriam which is in the sea of Tiberias goes round all the springs and wells after Shabbos. A sick person who drinks of this water is immediately healed.
A friend told me that he is particular to drink fresh water (from the tap) after Shabbos because of this.
Two parts to my question:
1] Is there a custom nowadays to drink water after Shabbos to follow this practice of the Taamei Haminhagim?
2] If so, would we not have to wait for the water that is in the source comes through the water distribution system to our tap – a process that might take several days?