Hot Springs as Mikva

Here are requirements for a hot spring as a mikva:
  1. The temperature may not be above 98° F.
  2. If the spring and immersing area are separate, any pipes used to bring water into the immersing area from the spring must be at least 3" in diameter. Consult a rabbi.
  3. The mikva area must contain at least 40 seah of the spring water.
  4. The mikva area must be hewn of rock or poured concrete, etc., but may not be prefabricated in one piece, like a hot tub.
  5. The water may not reach the mikva area via a pump.
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