Because of its quantity, concentration or characteristics (ignitable, corrosive, reactive, toxic), hazardous wastes may pose a threat to the health of humans or other living organisms if not properly managed. Both state and federal environmental laws regulate hazardous waste from "cradle-to-grave." This means hazardous waste is tracked and regulated from the time it is created "cradle," until it is recycled, treated or disposed "grave," including when it is transported and stored. Learn more about the various permits, licenses and registrations required to manage hazardous waste. For information about EPA ID numbers associated with hazardous waste, please review EPA's How Hazardous Waste Generators, Transporters, and Treatment, Storage and Disposal Facilities Can Obtain EPA Identification Numbers webpage.