[Avodah] mikva shitos

[Saul.Z.Newman at kp.org]

i saw  this  remark online--
BTW, no Mikvah is today built the way it was in the Alte Heim, the 
Satmar(coming from the Chuster rov) rov has his shiteh, the Chazon Ish has 
his shiteh the Klausenburger believes all the above are no good, the all 
sugye of Mikvoes today is started from scratch, nobody has a mesorah on 
that, the modern world made it possible to add chumrahs that wasn't 
possible once 

---could  someone  kindly delineate these various  shitos  for me?  is he 
implying  mikvaos arre better, worse or just different than in the alte 
heim?
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