How to craft purified water? (Fallout 4)

Found a solution. It is necessary to take water from the workshop (so that there is no water at all). Then it is added, every three days, like.

NemoDog is
not, it is impossible,
and thanks to
Navarh
nishtyak for that, you need to check

rockpower
Yes, exactly, you need to pick it up. Only shop lids stack there.