I looked into this, and I couldn't find support for using alcohol as a water purifier. For beer, water is boiled in the process, and for wine, I think the growth of yeast crowds out other bacteria. I have seen advice for using alcohol as a skin/surface disinfectant.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.