<<More than an urban myth - de-mineralized water contributed to irregular
heartbeat, if it didn't cause it. Personal, not theoretical>>

Hi William,

   I've no experience with the above, but I do know that demineralized water
becomes aggressive and will attempt to reabsorb the minerals it has lost.
This can be demonstrated by filling an aluminum pan with the water.  In a
matter of a day or so, it will begin to eat away at the aluminum.

Both reverse osmosis systems and distillation systems remove trace minerals
from water.  In some cases, such as having too much salt in the water
supply, reverse osmosis is necessary.  This makes it imperative to suplement
with bioavailable trace minerals.

Siobhan