The major issue with the Mikveh is that it needs to be a natural body of water.
אך מעיין מקוה מים יהיה טהור מה מעין בידי שמים אף מקוה בידי שמים
So it is hard to make it by man's hands and still have it be natural. The issue really is from a Gemara that says if a pipe is formed and then attached that makes the mikveh no good. But if it is attached and then hollowed out that is OK. To the Rashbam that is a pipe of stone or wood.
But later the Gemara says that is only according to the idea that drawn water is no good only from the words of the sages. But if drawn water is no good from the Torah then even attached and then hollowed is no good. And that applies to either rain water or even drawing off from a spring.
So the issues just keep getting more and more. It is not just a matter of something losing the category of a vessel when it is attached to the ground because the law is like the sages that what is attached to the ground is not like the ground.
The further problem is that one something is made like a pipe to have water flow through it, it automatically has the category of a vessel. And since the law is like the sages that an attached vessel s still a vessel, that makes the whole project of an man made mikve a no starter.
[Unless we would go with R. Isaac who in fact holds a mikve made of drawn water is no good only to the sages and that would leave the teaching of the Gemara in its place.]
All I am saying is if you have a spring or river or ocean, anywhere around, that is the best idea.
I know girls have trouble in this area because most rivers are pretty cold. I hope that girls start to develop a rougher bark and get less delicate.
In NY a woman could go to the ocean on the seventh day and be OK at night. In Israel there are often springs and rivers around.
אך מעיין מקוה מים יהיה טהור מה מעין בידי שמים אף מקוה בידי שמים
So it is hard to make it by man's hands and still have it be natural. The issue really is from a Gemara that says if a pipe is formed and then attached that makes the mikveh no good. But if it is attached and then hollowed out that is OK. To the Rashbam that is a pipe of stone or wood.
But later the Gemara says that is only according to the idea that drawn water is no good only from the words of the sages. But if drawn water is no good from the Torah then even attached and then hollowed is no good. And that applies to either rain water or even drawing off from a spring.
So the issues just keep getting more and more. It is not just a matter of something losing the category of a vessel when it is attached to the ground because the law is like the sages that what is attached to the ground is not like the ground.
The further problem is that one something is made like a pipe to have water flow through it, it automatically has the category of a vessel. And since the law is like the sages that an attached vessel s still a vessel, that makes the whole project of an man made mikve a no starter.
[Unless we would go with R. Isaac who in fact holds a mikve made of drawn water is no good only to the sages and that would leave the teaching of the Gemara in its place.]
All I am saying is if you have a spring or river or ocean, anywhere around, that is the best idea.
I know girls have trouble in this area because most rivers are pretty cold. I hope that girls start to develop a rougher bark and get less delicate.
In NY a woman could go to the ocean on the seventh day and be OK at night. In Israel there are often springs and rivers around.
