How do you preserve water?
It is not necessary to heat treat water to be stored for emergencies. Water reserves can be stored in thoroughly washed, clean containers with tight-fitting lids such as plastic milk jugs. Clean water stored in clean containers with tight-fitting lids will remain palatable for an indefinite period. Check containers periodically for leaks or cloudiness. If the water starts to look, taste or smell bad, change it. If you have any doubts about the safety of the water to be stored, purify it before storage by boiling or chemical treatment.