PHILADELPHIA - Boiling water may not be the best policy for making it safe to drink, according to scientists who reported their research findings from Zambia to the American Society of Tropical Medicine and Hygiene annual conference. Rebecca Psutka of the University of Otago in New Zealand, who works with the London School of Hygiene & Tropical Medicine, explained to Peter Goodwin that the problem is not the boiling but the storage of drinking water after it’s been sterilised.