I know this is an old thread but I was looking for something else and came across it.
The comments above are grossly mistaken. There are minor conditions that require one to be well hydrated and the person is not a sakana without it.
What if someone does not have a colon and is prone to dehydration. They are not a choleh sheyesh bo sakana? But they still may need fluids to prevent dehydration and potential Uti or kidney infections.
What about patients who receive non critical infusions such as iron or biologics ( remicade…)
It is not as simple as it is made to be.
Furthermore, R, Moshe ztl does not Chas veshalom need out haskama and our agreement.