It's possible to do, but not recommended. Can you use distilled water instead?
I was considering buying water from the grocery store, I just use a 10g for TT and quarantine so would be cheaper than using RODI for this.
If you don't use a booster pump for your RODI system this might be a good reason to invest in one. Not only will it make water faster, but it will reduce the amount of waste water generated.
I have a booster pump, don't currently use it. I get 60 psi out of the tap. My plan was to let my water sit to degas and then run through DI using booster pump, just haven't got around to setting it up. Our water bill is going up x4, just can't see using any of that RODI water for quarantine. Might end up saving some rain water for RODI purposes at this cost.