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There's a growing health trend in America where people are drinking untreated spring water. Some claim it is better for your health than drinking sterilised tap water, because natural minerals are preserved. One company in California has reportedly been selling an 11 litre jug for up to $60.

But health experts are warning drinking untreated water can be harmful and spread dangerous infections such as cholera and E. Coli.

(Photo: Shot of a young woman drinking fresh water from a stream while out hiking, Credit: Getty Images)