This isn't a question about the difference between Deionized and Distilled water, my hope is that for once it's actually a chemistry question related to this topic.
Distilled water is created by repeatedly boiling water then re-condensing it so that all of the "stuff" dissolved in it should be, in theory, dropped out of it.
Deionized water, as is my understanding, is created by running water through an electric current to pull various metal ions out.
So (and forgive me if I'm thinking aloud) does distilled water still have ions? I just did some googling to double-check and while a watermolecule is, in theory, "neutral" google returns that there is still a slight positivity (+) to the H sides of the molecule and a slight negativity (-) to the O which results in Ions(-) still being attracted to the Hydrogens(+).
Part of me wants to say that there is some possibility that distilled water could retain some ions through the distillation process despite the bond being fairly weak. However, my brain wants to lean toward that being unlikely, that Distilled water ought to also be, Deionized.
As for deionized water, my gut is that while it ought not have heavy metal ions and salts and the like in it anymore due to the deionization process, plenty of other "stuff" such as organic material and microbes ought to be present.
So... After having done my best to answer my own question...
Is distilled water also deionized? and does deionized water have "stuff" in it?