As the floodwaters from Hurricane Harvey begin to recede, many will return to their homes to assess damage and start the long process to clean up and rebuild. This raises questions about potential health risks that may be lurking in the standing water and muddy sludge left behind, as well as within water-damaged walls, floors and furniture. Experts at Baylor College of Medicine have compiled an overview of precautions to take and what to look out for when returning to homes that experienced flooding.