Updated Zero Waste Hierarchy of Highest and Best Use
Gary Liss
Zero Waste International Alliance Announces Update to the Zero Waste Hierarchy
June 23, 2025 – The Zero Waste International Alliance (ZWIA) is pleased to announce the release of Version 8.1 of the Zero Waste Hierarchy of Highest and Best Use. The refined Hierarchy introduces key improvements that enhance the Hierarchy’s effectiveness as a leading tool for developing Zero Waste policies, programs, and strategies worldwide.
Key updates in Version 8.1 include:
● Enhanced language in the guiding principle of Do Not Export Harm, to ensure that harmful materials are not sent to regions or facilities that cannot properly handle them, with regard to environmental and health standards.
● Addition of a new principle, Do No Harm, to guide organizations in minimizing the negative social and environmental impacts of materials and discards throughout their lifecycle.
● Technical refinements to definitions surrounding circular economy, closed-loop systems, composting, and recycling, ensuring clarity and consistency in application.
I've included more details in the attached News Release. The updated Hierarchy can also be found at https://www.zwia.org/zwh.
Gary