@HealthRanger Mike I though you would have responded to the problem of rainwater. A lot of preppers are counting on rainwater collection Here is a quote from the below linked article. We are being killed by rainwater which will get into all out water.
“There is nowhere on Earth where the rain would be safe to drink, according to the measurements that we have taken,” Ian Cousins, a professor at the university and the lead author of the study published in Environmental Science and Technology, told AFP.

Now They Are Telling Us That The Rain That Falls From The Sky Is Extremely Dangerous And Can Cause Cancer
Is the rain that falls from the sky safe? When I was growing up, I would have laughed at you if you would have told me that I could get cancer by drinking the rain that comes from the sky. And I am sure…
End Of The American Dream