Distilled, reverse osmosis & other water types

[HiOrcDen]

So it has just occurred to me that I might use water from our sink drinking water filter for some or all of my orchids.

I know that it is at least distilled water, filtered from tap water. Will this be okay to use for my little orchids that are used to distilled water? Until now, I have bought special arrowhead water which is both spring water and distilled. Will it be okay to switch to distilled tap water instead?

Can I, and more importantly, is there any advantage to, using the distilled tap water for all of my orchids?

Also, my sister, who recommended this device to my parents, told me that it might be reverse osmosis as well. Is it possible for a filter to function as both distillation and reverse osmosis? (or do they even overlap in function?)

So then if the filter is both distilled and reverse osmosis, or one, or the other, in which cases would there be an advantage to use it for all of my Orchids?