Cpap users of Japan, distilled or purified?

I was reading that the recommended water for the humidifier was distilled water 蒸溜水but on Japanese websites they seem to promote 精製水 as the cpap water of choice. What do other users in Japan do for their water and go about obtaining it?

1 comment
  1. Distilled is going to be the safest as it’s had the minerals (that cause build up in the machine) and any contaminants (that you don’t want to inhale nightly).

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