"Cleaning up after a flood can pose health risks. You and your family should wait to re-enter your home until professionals tell you it is safe, with no structural, electrical or other hazards. Before you start cleanup activities, contact your insurance company and take pictures of the home and your belongings. Remember - drying your home and removing water-damaged items is your most important step for preventing mold damage."
Environmental Protection Agency: http://www.epa.gov/