Hazardous waste means:

• Dangerous goods that are no longer used for their original purpose if they meet the criteria for class 2, 3, 4, 5, 6, 8, or 9 of the Transportation of Dangerous Goods Regulations including those that are recycled, treated, abandoned, stored or disposed of, intended for recycling, treatment, or disposal or in storage or transit before recycling, treatment, or disposal
• PCB wastes
• Biomedical wastes
• Wastes containing dioxin
• Waste oil
• Waste asbestos
• Waste pest control product containers and wastes containing pest control products, including wastes produced in the production of treated wood products using pest control products
• Leachable toxic waste
• Waste containing tetrachloroethylene
• Wastes listed in Schedule 7
• Waste that is corrosive because it has a pH factor of less than 2.0 or greater than 12.5 measured directly when the waste is liquid or measured in a 50% distilled water mixture or solution by mass when the waste is solid or
• Waste containing polycyclic aromatic hydrocarbon

Hazardous waste does not include:

• Household refuse that is collected from residential premises
• Domestic sewage
• Dangerous goods that are defective, surplus, or otherwise not usable for their intended purpose and that are in the process of being returned directly to a manufacturer or supplier
• Asphalts and tars used in the manufacture of asphaltic concrete and roofing materials
• Waste wood products treated with wood preservatives or wood protection products registered under the Pest Control Products Act (Canada) or
• Household hazardous waste that is removed from a return collection facility in accordance with an authorization from the owner of the return collection facility and is to be reused for its originally intended purpose