Warning toilet humour... (alternative title: Don't try this at home)

An amusing toileting story of high adventure in New Scientist.

But surely this can't be right (see sentence in appropriate hue):

"A team stationed in Anchorage, Alaska, and led by Joseph McLauglin from the US Centers for Disease Control and Prevention, surveyed 132 climbers in June 2002. They found that 29% had diarrhoea at least once on their average 18-day trek on the mountain. And 39% reported seeing snow contaminated with faeces in or near their camps. But that did not stop nearly a quarter of climbers from collecting snow for drinking water directly from camps. Only 16% of climbers said they always boiled their drinking water.

Furthermore, fewer than half said they always washed their hands after defecating, with 16% admitting using rocks and snow instead of toilet paper. A shameful 11% confessed to pooping directly into the snow."

Guess the snow would be good for those with piles.