Family Swimming

Is it allowed for a family siblings boys and girls to swim in one pool, are there any requirements?

Shalom!

Thank you for your question.

It is unbecoming for brothers and sisters to go swimming together as the laws of modesty, and which parts of the body are permitted/forbidden to be revealed, apply between siblings, as well.

This should be enacted from even a young age.

For the benefit of our readers, allow me to add a few words on mixed swimming in general.

The first source for the ban on mixed swimming is the Talmudic passage that says that it is forbidden for a man to watch women do laundry. This is because, when the women did the laundry, they would roll their clothes up high on their body in order to avoid getting wet. It is forbidden to gaze at those parts of the body that would become exposed as a result. Another passage teaches that men who gaze at women in the river “lose their share in the world to come.” Another passage teaches that one who allows his wife to go mixed swimming is “evil.” Finally, there is a passage that teaches that a woman who bathes in the presence of men should be divorced.

Based on the above, it is clear that mixed swimming is forbidden.

So in your case of a family pool, le'halocho it is permitted for boys till the age of nine to be in the pool with girls till the age of three.

It is also worth mentioning that women are not allowed to swim if being watched by a male lifeguard unless they are fully clothed.