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I'm considering building an outside mikveh, with the freshwater section above the rainwater section (with two holes between them, classical "bor al gabai bor" halachic design) but there is no realistic way to keep the rainwater bottom 'bor' liquid during winter. However, it would not be difficult to fill the top section with warm fresh water. Will the slight ice melt of the bottom rainwater section by the top water section be considered sufficient mixing to create a valid mikveh in winter?

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  • Can you edit in a diagram? That might help people understand the case better.
    – Double AA
    Commented May 4, 2016 at 20:46
  • See ShA YD 201:30
    – Double AA
    Commented May 4, 2016 at 20:49
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    Very good question!
    – kouty
    Commented May 4, 2016 at 22:24
  • @DoubleAA I think that can there is an additional problem: if the frozen Mikve is mamash frozen as a glass and it is impossible theoretically to tovel betocho, may be that it is not a Mikve, so , hashaka is not helpfull.
    – kouty
    Commented May 5, 2016 at 7:29
  • I am not sure that contact between solid an d liquid matters may be called Hashaka. I am not sure at 100% but it seem's not reglemantary
    – kouty
    Commented May 5, 2016 at 8:05

1 Answer 1

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Yd 201.75.
Can not do kiss (connection) if the 2 waters are different (temperature)


Think you might want to know

Yd201.31.
If collected water (not rain water) is frozen and then melted it stops being considered connected

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  • Yshar Coach Can you quote the halachot, I do not find
    – kouty
    Commented May 5, 2016 at 16:39
  • יֵשׁ מִי שֶׁאוֹסֵר לְהַטִּיל יוֹרָה מְלֵאָה מַיִם חַמִּין לְתוֹךְ וְכֵן לְמַלֹּאת מִקְוֶה מַיִם חַמִּין וּלְחַבְּרוֹ לְנָהָר בִּשְׁפוֹפֶרֶת הַנּוֹד now i see that i may be wrong with this but I still remember that if the 2 waters are . different there is no hashoko 31 מִקְוֶה שָאוּב שֶׁהִגְלִיד, טָהוֹר מִשּׁוּם מַיִם שְׁאוּבִים. נִמּוֹחוּ, כָּשֵׁר לְהִקָּווֹת.
    – hazoriz
    Commented May 5, 2016 at 23:02
  • @kouty See above
    – hazoriz
    Commented May 5, 2016 at 23:34

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