In Victorian Britain, beer was drunk to avoid water-borne diseases such as cholera. Were there similar practices of substituting water for alcohol outside Europe? How did Islamic societies make their water potable?

by stupidpower
arcii

I think these resources address the first part of the question: beer was not widely drunk to avoid water-borne diseases

That being said, none of the threads address the sources of potable water in Islamic nations, so that part of the question is still fair game!