Hazardous Materials
45 definitions

About this Term

"Any substance that can threaten health, safety, and property being transported" (see full definition at The Law Dictionary).


"A number of terms (e.g., "hazardous chemicals," "hazardous materials," "hazardous waste," and similar nomenclature) refer to substances that are subject to regulation under one or more federal environmental laws. State laws and regulations also provide additional, similar, or identical terminology that may be confused with the federally defined terms. Many of these terms appear synonymous, and it is easy to use them interchangeably. However, in a regulatory context, inappropriate use of narrowly defined terms can lead to confusion about the substances referred to, the statutory provisions that apply, and the regulatory requirements for compliance under the applicable federal statutes."

Read more about 'Hazardous Terminology' in the U.S. Department of Energy's CERCLA Information Brief EH-231-003/0191, which provides regulatory definitions and references for the precise terminology that should be used when referring to "hazardous" substances regulated under federal environmental law.

This definition has not yet been approved by a moderator.

Anything that poses a substantive present or potential hazard to human health or the environment when improperly treated, stored, transported, disposed of, or otherwise managed.

FK Reading Ease
15.6

FK Grade Level
Graduate School
  • Flag
  • "Hazardous Materials" means all explosive, radioactive, hazardous, or toxic substances, wastes or materials, including petroleum or petroleum distillates, asbestos or asbestos-containing materials, polychlorinated biphenyls, radon gas, infectious or medical wastes, and all other substances or wastes regulated pursuant to any Environmental Law.
    FK Reading Ease
    -43.4

    FK Grade Level
    Graduate School
  • Flag
  • "Hazardous Materials" means all substances defined or regulated as hazardous, a pollutant or a contaminant under any Environmental Law, including any regulated pollutant or contaminant (including any constituent, raw material, product or by-product thereof), petroleum or natural gas hydrocarbons or any liquid or fraction thereof, asbestos or asbestos-containing material, polychlorinated biphenyls, any hazardous or solid waste, and any toxic, radioactive, infectious or hazardous substance, material or agent.
    FK Reading Ease
    -65.5

    FK Grade Level
    Graduate School
  • Flag
  • “Hazardous Materials” means all explosive or radioactive substances or wastes and all hazardous or toxic substances, wastes or other pollutants, including petroleum or petroleum distillates, asbestos or asbestos-containing materials, polychlorinated biphenyls, radon gas, infectious or medical wastes and all other substances or wastes of any nature regulated pursuant to any Environmental Law.

    FK Reading Ease
    -36.9

    FK Grade Level
    Graduate School
  • Flag
  • “Hazardous Materials” means all explosive or radioactive substances or wastes and all hazardous or toxic substances, wastes or other pollutants, including petroleum or petroleum distillates, asbestos or asbestos-containing materials, polychlorinated biphenyls, radon gas, infectious or medical wastes and all other substances or wastes of any nature regulated pursuant to any Environmental Law.

    FK Reading Ease
    -36.9

    FK Grade Level
    Graduate School
  • Flag
  • “Hazardous Materials” means any substance, pollutant, contaminant, material or waste, or combination thereof, whether solid, liquid or gaseous in nature, subject to regulation, liability (as defined under applicable common law), investigation, control or remediation under any Environmental Law. “Hazardous Materials” also means any environmental media, including without limitation soil, sediment and water, containing any of the materials described or set forth in the preceding sentence.
    FK Reading Ease
    -22.7

    FK Grade Level
    Graduate School
  • Flag
  • “Hazardous Materials” means all explosive or radioactive substances or wastes and all hazardous or toxic substances, wastes or other pollutants, including petroleum or petroleum distillates, asbestos or asbestos containing materials, polychlorinated biphenyls, radon gas, infectious or medical wastes and all other substances or wastes of any nature regulated pursuant to any Environmental Law.

    FK Reading Ease
    -36.9

    FK Grade Level
    Graduate School
  • Flag
  • “Hazardous Materials” means (a) petroleum and petroleum products, byproducts or breakdown products, radioactive materials, asbestos-containing materials, polychlorinated biphenyls and radon gas and (b) any other chemicals, materials or substances designated, classified or regulated as hazardous or toxic or as a pollutant or contaminant under any Environmental Law.

    FK Reading Ease
    -44.6

    FK Grade Level
    Graduate School
  • Flag
  • “Hazardous Materials” means (a) petroleum and petroleum products, byproducts or breakdown products, radioactive materials, asbestos-containing materials, polychlorinated biphenyls and radon gas and (b) any other chemicals, materials or substances designated, classified or regulated as hazardous or toxic or as a pollutant or contaminant under any Environmental Law.

    FK Reading Ease
    -44.6

    FK Grade Level
    Graduate School
  • Flag
  • Hazardous materials are any solid, liquid, or gaseous material that, because of quantity, concentration or physical, chemical, or infectious characteristics, may (a) cause or significantly contribute to an increase in mortality or an increase in serious irreversible or incapacitating illness, or (b) pose a substantial present or potential hazard to human health or the environment when improperly treated, stored, transported, disposed of or otherwise managed.

    FK Reading Ease
    -38.8

    FK Grade Level
    Graduate School
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