Water usage with illness.

[bigpaul]

in a SHTF situation our water requirements would be different, we would have to conserve what we had and what we could get.
not so bad where I live as its a mild climate with plenty of rain fall, plus rivers and wells and springs.
the minimum requirement is at least 2.5 litres/half a gallon for drinking purposes, then you have cooking, washing- no showers "strip wash" would be the thing to do, washing clothes would be done in a bucket or adobe washing in a stream if near one.
I personally will allow 1 gallon per person per day, that should cover all bases.
all water should be treated before use, goes without saying.