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"Legionella is a type of bacteria commonly found in warm water environments such as hot tubs, hot water tanks, drinkable water systems, and decorative fountains. When someone is exposed to the bacteria, it can cause Legionnaries' disease, which is a respiratory disease capable of causing pneumonia.

Genesee County Health Department and Wayne State University are also releasing information for Flint residents about what one can do to protect themselves.

"We have worked hard to coordinate the various local, state, and national groups involved in the effort to understand and manage the concerns about Legionnaires' disease in Flint," Wayne State crisis communication expert Dr. Matthew Seeger said. "Cooperation is critical to ensuring the best information is delivered in a timely manner.""