(I posted a reply but I don't see it... Will redo...)
Yes. I plead brevity for the sake of an introduction; I just said 'frugal' and enough for drinking. Water is critical! The more the better. I like that bladder that lays in the bathtub. It says 'up to 100 gallons' but that seems a bit optimistic. Folded it is small and takes no space for storage, but expands nicely. It says it is made of 'food grade plastic', an important consideration.
nite
What about filling up 2 liter bottles from home water before the SHTF and storing it????