The World Health Organization (WHO) attributes 80 percent of all travel diseases to contaminated drinking water. Don't let contaminated drinking water spoil your trip. Avoid tap water and ice cubes anytime the water quality is uncertain - even bottled water can be questionable, when available. According to WHO, almost half of all travelers suffer from some form of diarrhea while en-route. Good health while traveling starts with travel preparation - and the right Katadyn product for safe drinking water.