from FDA
-Formula preparation. In most cases, it's safe to mix formula using ordinary
cold tap water that's brought to a boil and then boiled for one minute and
cooled. According to the World Health Organization, recent studies suggest
that mixing powdered formula with water at a temperature of at least 70
degree C—158 degrees F—creates a high probability that the formula will
not contain the bacterium Enterobacter sakazakii—a rare cause of
bloodstream and central nervous system infections. Reme