Let's not forget good old household liquid bleach (non-scented, non-"Ultra" type). In a disaster situation at home, next to boiling, using bleach is probably going to be the most commonly available form of water purification for the vast majority of households, even for folks without any special preps.
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.