An environmental product declaration (EPD) reports environmental impacts occurring during the manufacture and life of a product based on International Organization for Standardization (ISO) Life Cycle Assessment (LCA) standards (ISO 14040 series).  Figure 1 illustrates the relationships between the IS0 14020 Eco Label standards and the ISO 14040 LCA standards. As shown in the Figure, there are three types of eco-labels, only one of which –  the ISO 14025 Type III EPD – is solidly based on LCA. Another standard linked to ISO 14025 is ISO 21930, which deals specifically with EPDs for building products.

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