What is Hazardous Solid Waste (HSW)?

Hazardous Solid Waste (HSW) refers to any waste that poses a significant risk to human health or the environment due to its chemical, biological, or physical properties. This includes waste that is toxic, flammable, corrosive, reactive, or otherwise dangerous in high concentrations. In New South Wales, HSW must be classified in accordance with the NSW Waste Classification Guidelines and managed under strict regulatory controls outlined by the Protection of the Environment Operations (Waste) Regulation 2014.

HSW can arise from a range of industrial, commercial, or remediation activities—for example, when handling asbestos-contaminated materials, solvent residues, or certain chemical wastes. Because of the risks involved, hazardous waste must only be transported and disposed of by licensed contractors at approved facilities. Accurate classification and documentation are essential. Failing to properly manage HSW can result in serious legal, environmental, and safety consequences. For any site generating potentially hazardous materials, early expert advice is critical to ensure compliance and safe waste handling from start to finish.

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