Material Category Types and Disposal Methods

Material Category/Type

Flammable and Poison

  • Flammable solids/liquids:
    • Flammable solids (bulked and lab packed): Asbestos-containing organic resins, non-asbestos-containing organic resins, roofing tar, putty, adhesives, paint sludge.
    • Flammable liquids (lab packed only): Organic solvents, chlorinated and non-chlorinated solvents, gasoline, alcohol, paint thinner, acetone
  • Bulked flammable liquids: Flammable liquids (bulked only): Organic solvents, chlorinated and non-chlorinated solvents, gasoline, alcohol, paint thinner, acetone
  • Oil-based paints: Oil-based paint
  • Poisons:
    • Organic poisons, dioxin precursors, pesticides, herbicides.
    • Inorganic poisons, mercury-containing poisons, inorganic cyanides, arsenic compounds, solutions containing regulated heavy metals.
    • Snail bait, poisonous solids, may include asbestos
  • Reactive and explosive: Water reactive compounds, such as sodium metal, calcium carbide, amides, hydrides
  • Compressed gas cylinders: Includes tanks that may contain helium, propane, Freon, acetylene, oxygen, etc.


  • PCB-containing paint: PCB-containing paint
  • Other PCB waste (includes ballasts): Transformer oil, PCB ballasts


  • Antifreeze: Antifreeze
  • Auto type batteries (motor vehicles): Car, truck, motorcycle batteries
  • Latex paint: Latex paint
  • Motor oil/oil products: Used motor oil, brake fluid, transmission fluid
  • Used oil filters (recyclables only): Used oil filters
  • Other reclaimable: None

Universal Waste (UW)

  • Mercury containing automatic switches/thermometers/and novelties: Broken thermometers
  • Mercury containing waste (other): Liquid mercury vials
  • Lamps: Waste electric lamps include, but are not limited to, fluorescent, high intensity discharge, neon, mercury vapor, high pressure sodium, and metal halide lamps
  • Rechargeable batteries: Rechargeable household batteries
  • Other batteries: All types of non-rechargeable household batteries
  • Aerosol cans: Aerosol containers
  • Other UW: None

Electronic Devices (UW)

  • Covered electronic devices: Most video display devices containing a screen greater than four inches.
  • Other electronic devices: Computers, computer peripherals, telephones, answering machines, radios, stereo equipment, tape players/recorders, phonographs, video cassette players/recorders, compact disc players/recorders, calculators, and some appliances


  • Inorganic and organic acid: Inorganic acids, hydrochloric acid, sulfuric acid, phosphoric acid. Organic acids, acetic acid, citric acid, butyric acid


  • Inorganic and organic base:
    • Inorganic bases, sodium hydroxide, lye, ammonia based cleaners.
    • Organic bases, organo-amines


  • Neutral oxidizers, Organic peroxides, Oxidizing acid/base:
    • Neutral oxidizers: Manganese peroxide, hydrogen peroxide, sodium bromate, sodium perchlorate, sodium chronate, ammonium dichromate, sodium iodate, sodium nitrate, potassium permanganate.
    • Organic peroxides: Ketone peroxides, benzoyl peroxide.
    • Oxidizing acid: Nitric acid, chronic acid, molybdic acid, perchloric acid, pholphomolybdic acid.
    • Oxidizing base: Sodium hypochlorite, sodium chlorate, sodium perborate


  • Asbestos: Friable and non-friable asbestos


  • Home-generated sharps waste: Hypodermic needles, syringes, lancets
  • Home-generated pharmaceutical waste: Over-the-counter drugs and prescription drugs (including controlled and non-controlled substances).
  • Treated wood: Wood that contains chemical preservatives including creosote, copper chromium arsenic or other arsenical preservatives, pentachlorophenol, etc.

Disposition Methods

Treatment where waste is chemically stabilized into a solid or semi-solid state such that it no longer exhibits hazardous characteristics and can be managed as non-hazardous waste (does not apply if after stabilization, waste is still hazardous and is sent for disposal or treatment by one of the other methods described here).
Treatment by chemically adjusting the pH of the waste such that the waste can be discharged into a publicly owned treatment works (does not apply if after neutralization, the waste is still hazardous and is sent for disposal or treatment by one of the other methods).
Waste is used without further treatment or handling for the original intended purpose of the material before it became a waste.
Disposal of a waste in the ground at a hazardous waste landfill.
Fuel incineration:
Treatment by thermal destruction where the waste, either by itself or blended with another material, is burned to recover its potential thermal energy.
Destructive incineration:
Treatment by thermal destruction at a high temperature hazardous waste incinerator where the physical destruction is the sole intent of the treatment process.
A product stewardship organization that meets the mandatory “Extended Producer Responsibility” (EPR) requirements of product stewardship. These include, at a minimum, the requirement that the producer’s responsibility for their product extends to post-consumer management of that products and its packaging. There are two related features of EPR policy: (1) shifting financial and management responsibility, with government oversight, upstream to the producer and a way from the public sector; and
Waste is sent for resource recovery where the raw materials used for making the material before it became a waste are recovered to make new materials of the same or different nature (does not include fuel incineration).

For more information contact: Household Hazardous Waste Annual Reports,