Changes

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| 1990 || {{w|Solid waste}} || Publication || [[W:Biodegradation (journal)|Biodegradation]] launches as a [[w:peer review|peer-reviewed]] {{w|scientific journal}} covering biotransformation, mineralization, detoxification, recycling, amelioration or treatment of chemicals or waste materials by naturally occurring microbial strains, microbial associations or recombinant organisms.<ref>{{cite web |url =https://link.springer.com/journal/10532|title= Biodegradation|website= springerlink|publisher = Springer Netherlands|access-date= 28 April 2020}}</ref> ||

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| 1991 || {{w|Biological waste}} || Policy || The {{w|United States Occupational Safety and Health Administration}} publishes the Occupational Exposure to Bloodborne Pathogens Standard, with the purpose to protect workers by limiting occupational exposure to blood and other potentially infectious materials.<ref name="usg.edu"/> || {{w|United States}}

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| 1991 || {{w|Electronic waste}} || Policy || The {{w|European Union}} adopts the [[w:Battery Directive|Directive 91/157/EEC]] which is intended to reduce environmental hazards related to batteries containing dangerous substances by harmonizing Member States' laws on the disposal and recycling of these types of batteries.<ref>{{cite web |title=Guidance for Complying with the European Union (EU) |url=http://www.energy-assurance.com/PDFs/Battery_directive_compliance.pdf |website=energy-assurance.com |accessdate=27 April 2020}}</ref> || {{w|European Union}}

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| 1992 (May 5) || General || Policy || The {{w|Basel Convention}} enters into force. Many countries pass legislations enlisting waste that cannot be imported into their territory.<ref name="Solid Waste Management: Principles and Practice"/> ||