Jason,
Would you expand a bit on your use of a water distiller?
I know what they are and what distilled water is and isn't ... but never heard of using one in an RV. Is it's main purpose to get you safe drinking water from lakes and streams?
I backpack and as you probably know, there are great filters available now that can render water safe directly from dirty, non-potable sources without having to distill it. I generally stay away from using distilled water because of it's lack of minerals once you have it distilled ... PLUS, as you point out ... distilling takes power for the heating of it.