Sustainability standards and guidance: applying a life cycle perspective
Standards and guidance help organizations structure environmental management, measure performance and communicate sustainability information. Some address Life Cycle Assessment (LCA) directly; others focus on specific topics such as carbon footprints, water footprints, environmental labelling, greenhouse gas emissions and the circular economy.
References for products and services
ISO 14040 sets out LCA principles and framework, while ISO 14044 specifies requirements and guidance for conducting studies. More specific references include ISO 14067 on product carbon footprints, ISO 14046 on water footprints, and standards in the ISO 14020 series on environmental claims and labelling.
These references are not interchangeable. The appropriate choice depends on the study's goal, the object being assessed, the intended audience and the type of claim. A carbon footprint, for example, does not replace an LCA covering multiple impact categories.
References for organizations and specific topics
Other standards address greenhouse gas inventories and communication, environmental management systems, resource efficiency and circularity. Some are international; others were developed for particular regulatory or sectoral contexts.
The landscape has evolved since the original overview. Relevant developments include ISO 59004:2024, which provides vocabulary, principles and guidance for the circular economy, and ISO 14068-1:2023 on carbon neutrality. In 2026, ISO published ISO 14068:2026, replacing the earlier edition. Any standards overview should therefore identify the edition and status consulted.
Choosing the right reference
Before starting a project, check: (1) whether the standard is current and whether amendments apply; (2) whether it covers the product, service or organization in question; (3) which boundaries, functional units, allocation rules and data-quality requirements are relevant; and (4) whether the results will support internal management, public comparisons, labelling or sustainability reporting.
Standards promote consistency and transparency, but they do not remove the need for well-justified methodological choices. A life cycle perspective helps prevent improvements in one stage from causing increased impacts elsewhere.