Heh, I just buy a gallon at the store for 89 cents. On a more serious note distilled water from the store is not for drinking! It contains no chlorine normally added to drinking water to kill all the usual suspects. If you plan on using Distilled Water for vaping, boil it for 5 minutes (and cool) and then bottle it per your setup (30ml glass? 120ml squirty?) ...don't forget the label!
For my first plan to use DW (last year) I poured it directly from the gal jug into a (somewhat?) cleaned 30ml HDPE (recycle). This got lost in the chaos for two months and when next examined had a rather large gelatinous glob of biological entity ...the horror. There's a picture I posted on here somewhere.
Whatever bacteria/mold living in the otherwise pure water fed on whatever had remained in the plastic (even after cleaning) and in a couple months had grown to a respectable size. I tossed it (unopened) into the trash because ...I didn't have a 55 gal drum of fire handy.