"It is easy to forget ice can carry bacteria because they think it is too cold for germs, but that is far from the truth," she told The Mail. "Nasty bugs such as E.coli can lurk in ice machines. In some cases, such as Nando's, we found double the amount of bacteria we would expect to find [in drinking water]. This is caused by things such as a failure to clean machines and scoops used by staff."
Dr. Melody Greenwood, a former laboratory director for the Health Protection Agency, said the results are a warning.