This guy won't touch it.

http://www.businessinsider.com/what-...1/#raw-water-1

Food poisoning expert Bill Marler has cut certain foods out of his diet
after more than two decades as a foodborne-illness attorney. The latest
addition: unfiltered, untreated water, which has recently become an
obsession in Silicon Valley. Other items Marler won't eat are more
commonplace, like oysters, sprouts, and uncooked flour. A deep
knowledge of thousands of food poisoning cases across the US has scared
Bill Marler off of certain foods. With more than two decades working as
a food poisoning advocate and attorney, there are simply some things
that Marler has cut out of his diet. Marler has won more than $600
million for clients in foodborne-illness cases