Hazardous waste is any unwanted material the disposal of which poses a threat to the environment, i.e. it is explosive, flammable, oxidising, poisonous/infectious, radioactive, corrosive and/or toxic/ecotoxic. Sources of hazardous waste include hospitals, timber treatment, petrol storage, metal finishing, paint manufacture, vehicle servicing, tanneries, agriculture/horticulture, electricity distribution and dry cleaning. The waste can be treated chemically (i.e. by neutralisation, oxidation, reduction, hydrolysis, precipitation), physically (encapsulation, separation), biologically (using microorganisms) or thermally (incineration). Most treated waste is then deposited in landfills. To prevent landfills themselves being environmental hazards, conditions of resource consents granted under the Resource Management Act 1991 generally control the types of waste that can be deposited in them and the landfill design. Download The Hazardous Waste Management Rules, 2016Hazardous waste is any unwanted material the disposal of which poses a threat to the environment, i.e. it is explosive, flammable, oxidising, poisonous/infectious, radioactive, corrosive and/or toxic/ecotoxic. Sources of hazardous waste include hospitals, timber treatment, petrol storage, metal finishing, paint manufacture, vehicle servicing, tanneries, agriculture/horticulture, electricity distribution and dry cleaning. The waste can be treated chemically (i.e. by neutralisation, oxidation, reduction, hydrolysis, precipitation), physically (encapsulation, separation), biologically (using microorganisms) or thermally (incineration). Most treated waste is then deposited in landfills. To prevent landfills themselves being environmental hazards, conditions of resource consents granted under the Resource Management Act 1991 generally control the types of waste that can be deposited in them and the landfill design. Download The Hazardous Waste Management Rules, 2016