Originally Posted by MiaHeatLvr
Better than tap water, but not nearly as good as ro/di or bottled distilled.. But way better than tap assuming they maintain the filtration unit on the machine.
I don't know about all the different kinds of machines, but Glacier is RO/DI. It's what I use- you just have to be careful & make sure it's properly maintained, otherwise it can throw off your parameters. I go to a machine outside a little Asian market; I was able to talk to the owner & she told me that yes, the owner of the machine actually services it twice a month.
BTW, I've heard that distilled water is not good to use in the tank because it is usually heated through copper pipes (distilled means that the water has been turned to steam & then recondensed). So I'd be wary of using it unless I knew how it was processed. Just my .02