Hazardous waste refers to materials that can be harmful to human health or the environment. This type of waste can be generated from various sources, including industries, laboratories, and households. Common examples include chemicals, batteries, and certain electronic devices. Proper management and disposal of hazardous waste are essential to prevent contamination and protect public safety. The classification of hazardous waste is based on its properties, such as being toxic, flammable, or reactive. Regulations, such as the Resource Conservation and Recovery Act (RCRA), govern the handling and disposal of these materials to ensure they are treated safely and responsibly.