You MUST boil drinking water in a situation like this unless it comes from a bottle. Cholera is an exquisitely unpleasant disease that is perfectly treatable wherever there is a medical infrastructure left. Where there isn't it can kill a lot of people.
A Cholera cot.
That sorta says it all.
When a thousand or so evacuees arrived at Lubbock, TX, they were greeted by clean folks wearing rubber gloves. I actually saw someone here bypass the logic and dwell on the implication 'that was rude.'
[shaking head]