The text does not tell us if these are seasonal or consecutive, so some who adhered to these customs did it at four different days of the year, around the solstice and equinoxes, while others kept this practice up for four consecutive days in the month of Nisan (an important month in the Jewish calendar).
They would pair it around four events:
- The four events—the sacrifice of Isaac,
- water turning to blood in Egypt,
- blood coming out of the rock Moses struck,
- and finally the death of Jephthah’s daughter
Now, the abstaining from water from wells in this case was considered ‘mourning’ of sorts, or remembering of mourning. It has a negative notions paired with it, the disobedience of the people at Mara when Moses struck the water and interprets Jephthah’s story negatively.
But, the other way of doing it, seasonally, has an interesting spin.
Some didn’t drink water from wells not out of superstition that the water is bad, or in remembrance that the water was bad in those instances, but because you were supposed to be drinking sweeter things at the beginning of each season (wine, orange juice, etc.), to start each season off remembering the good things of life.