Don't overlook water and several means of
purification.
Store as much as you would as if they said
there wasn't any more indefinitely
A 5 gallon bucket (about $150.00) of powdered calcium chloride (make sure that it doesn’t have other chemicals that swimming pool chlorine treatments have), will treat a lot of water! memtb
So will a couple gallons of bleach.
First ....a correction! I meant Calcium Hypochlorite, “not” Calcium Chloride!
1/4 teaspoon / 55 gallons water
If my math is correct, I can treat 170000 gallons water with that 5 gallon bucket. I don’t think that a couple of gallons bleach will go that far!
memtb