It is my understanding that while RO water is prefectly safe to drink, DI water is not. I do not have facts and this is only something I seem to have dug up from some deep dark recess of my own mind. Since my RO/DI has a takeoff to bypass the DI unit, it's no big deal to fill a gallon jug to keep in the fridge, but gosh it would be nice to add an ice-maker and run it off the RO/DI.
So is RO/DI, safe to drink?