In the impoverished United States province of Michigan, the post industrial hell hole commonly referred to as "Flint" is going through a water quality crisis. Dangerous levels of lead, iron, and other metals had been detected in Flint's municipal for months, and now there are concerns that Flint's water problems are contributing to an outbreak of Legionnaires' disease (archived). Outbreaks of disease caused by Legionella bacteria have been increasing across the United State with deteriorating healthcare facilities most frequently being affected. The Flint outbreak is exceptional in the size geographic area apparently being affected. Travellers to the United States would be prudent to avoid drinking tap water that has not been further purified at the point of consumption. Much of Michigan is surrounded by the Earth's largest system of freshwater lakes.