What type of waste is classified as hazardous?

Hazardous waste is defined as any discarded material that poses a significant threat to public health or the environment due to its chemical nature, toxicity, or potential for contamination. This classification encompasses a wide range of materials, which may include chemicals, heavy metals, and certain biological wastes, among others.

The correct identification of hazardous waste hinges on its ability to harm human beings or the ecosystem in substantial ways. For example, substances that are flammable, reactive, toxic, or corrosive can fall into this category. Understanding this ensures that appropriate handling, storage, and disposal methods are employed to mitigate risks.

In contrast, the other options listed are not inherently hazardous. Non-toxic cardboard waste, garden waste, and biodegradable materials typically do not present the same risks to health and the environment as hazardous materials do. These types are usually manageable through standard waste management practices rather than requiring specialized handling protocols defined under hazardous waste regulations. Thus, the distinction is primarily based on the presence of harmful characteristics in the waste material.