What Is ISO 14020? The Framework Behind Environmental Statements

Please note: This article was substantially updated in 2026 to reflect ISO 14020:2022 and the 2026 revisions to ISO 14021, ISO 14024, and ISO 14025. This article is for educational purposes only. It does not replace the ISO and EN standards. If you work at a university, you probably already have a licence to view the complete standards. If not, please go to your relevant national provider of standards.

When you see an environmental claim on a product, how do you know it’s genuine? The ISO 14020 family provides the framework that separates credible environmental statements from greenwashing. These standards define four distinct categories of environmental statement, each with different levels of verification and trust.

Understanding these categories helps you navigate the increasingly complex landscape of environmental claims, whether you’re making them or evaluating them.

The ISO 14020 Framework#

ISO 14020 establishes the principles and general requirements for all product-related environmental statements and the programmes behind them. Revised in 2022, it was retitled from ‘Environmental labels and declarations — General principles’ to ‘Environmental statements and programmes for products — Principles and general requirements’, reflecting its expanded role as the umbrella standard for the whole family.

ISO 14020:2022 still sets out guiding principles: accuracy and verifiability, relevance to the specific product, clear and non-misleading presentation, scientific methods, consideration of the full life cycle, no unnecessary barriers to trade, transparent development, accessibility of information, and regular review. But it now goes further, establishing common terms, definitions, and general requirements that apply to all environmental statement programmes. Content that previously sat in the individual standards has been moved up into ISO 14020, so the family now works as a hub-and-spoke system rather than a collection of standalone documents.

The framework covers four categories of environmental statement, each governed by its own standard: self-declared environmental claims (ISO 14021), ecolabels (ISO 14024), environmental product declarations or EPDs (ISO 14025), and footprint communications (ISO 14026).

A Note on Terminology#

If you’ve encountered these standards before, you may know them as Type I, Type II, and Type III environmental declarations. That numbering system has been retired across the whole ISO 14020 family. The 2026 revisions of ISO 14021, ISO 14024, and ISO 14025 all dropped the Type I/II/III labels in favour of descriptive names: ecolabels, self-declared environmental claims, and environmental product declarations. You’ll still see the old terminology in older documents, PCRs, and procurement specs, but it is no longer the preferred language of the standards themselves.

Environmental Statement Programmes#

A key addition in ISO 14020:2022 is the formalisation of environmental statement programmes. Every environmental statement is now expected to sit within a programme that specifies: the programme owner and operator, the type of environmental statement, how interested parties are involved, the scope and intended audience, the requirements and criteria the statement must satisfy, data and quantification methodologies including data quality criteria, the impartiality and competence of anyone undertaking conformity assessment, the format and publication requirements, and how changes to the programme are managed. The 2026 revision of ISO 14021 reinforced this by requiring self-declared claims to be part of a documented environmental statement programme, closing a gap that previously left self-declared claims as the only category without programme requirements.

Ecolabels (ISO 14024)#

Ecolabels (previously known as Type I environmental labels) are what most people think of when they hear ‘eco-label’. These are certifications awarded by independent organisations after rigorous assessment. ISO 14024 was revised in 2026 alongside the rest of the family.

How Ecolabels Work#

An independent certification body evaluates products against predetermined criteria for their category. These criteria consider multiple environmental aspects across the product’s life cycle. Products either pass and receive the label, or they don’t. There’s no middle ground.

The EU Ecolabel flower, Germany’s Blue Angel, and the Nordic Swan are established ecolabel programmes. Each has specific criteria for different product categories. A paint might need to meet requirements for VOC emissions, hazardous substances, and packaging. A laptop might be assessed on energy efficiency, recyclability, and absence of certain chemicals.

The Strength of Ecolabels#

Third-party verification provides the highest level of credibility for consumer-facing products. Consumers can trust these labels because independent experts have verified compliance with published criteria. The certification bodies themselves are often accredited, adding another layer of quality assurance.

For manufacturers, achieving an ecolabel demonstrates environmental leadership. It’s particularly valuable in public procurement, where many governments preferentially purchase eco-labelled products.

Limitations to Consider#

Ecolabels work on a pass/fail basis. A product that narrowly misses one criterion gets no recognition for excellence in other areas. The criteria are also predetermined, which might not capture innovative environmental improvements outside the standard parameters.

The certification process can be costly and time-consuming, potentially excluding smaller companies. Different regions have different ecolabel schemes, so a product might need multiple certifications for international markets.

Self-Declared Environmental Claims (ISO 14021)#

Self-declared claims (previously known as Type II declarations) are the environmental claims companies make about their own products. When you see ‘recyclable’, ‘compostable’, or ‘made with renewable energy’ on packaging, you’re looking at a self-declared claim. ISO 14021 was revised in June 2026, cancelling and replacing the 2016 edition.

The Framework of Self-Declaration#

ISO 14021 doesn’t require third-party verification, but it does establish strict requirements for self-declared claims. Companies must ensure claims are accurate and not misleading, have substantiating data available, be specific about what the claim covers, avoid vague terms like ‘eco-friendly’ or ‘green’, and use only the prescribed symbols (like the Mobius loop for recycling).

The standard defines specific terms and their proper use. ‘Recyclable’ means the product can be diverted from waste streams through available processes. ‘Recycled content’ must specify the percentage and whether it’s pre or post-consumer material.

A significant change in the 2026 edition is the requirement for self-declared claims to be part of a documented environmental statement programme. Previously, a company could make a claim without any programme structure behind it. Now, claims must sit within a programme that specifies who is responsible, what criteria apply, and how changes are managed. This brings self-declared claims into line with the programme requirements that ecolabels and EPDs have long had.

Why We’re Wary of Self-Declared Claims#

Without third-party verification, self-declared claims rely entirely on the claimant’s integrity. While many companies use them responsibly, the potential for greenwashing is significant.

A company might technically follow ISO 14021 but still mislead consumers. Claiming a product is ‘recyclable’ might be true in theory, but meaningless if recycling facilities for that material don’t exist in most markets. Similarly, highlighting one improved attribute while ignoring other environmental impacts can create a false impression of sustainability.

When Self-Declared Claims Make Sense#

Despite the risks, self-declared claims serve a purpose. They allow companies to communicate specific improvements quickly and cost-effectively. For simple, verifiable claims backed by transparent data, they can be entirely appropriate. Small businesses, in particular, might start with self-declared claims before investing in third-party certification. The 2026 programme requirement should improve quality over time by forcing companies to document the basis for their claims.

Environmental Product Declarations (ISO 14025)#

Environmental Product Declarations (EPDs), previously known as Type III declarations, represent the most comprehensive and data-rich form of environmental statement. ISO 14025 was substantially revised in June 2026, its first update since 2006. Our detailed article on ISO 14025 covers the 2026 changes in full.

The EPD Approach#

EPDs present quantified environmental data based on a full Life Cycle Assessment conducted according to ISO 14040/44. Unlike ecolabels that say ‘this product meets our criteria’, EPDs say ‘here’s exactly what this product’s environmental impacts are’.

The data covers multiple impact categories: climate change potential, acidification, eutrophication, resource depletion, and others. All calculations follow Product Category Rules (PCRs) that ensure consistency within product groups. EPDs are independently verified but make no judgement about whether a product is ‘good’ or ‘bad’ for the environment.

The Power of Transparency#

EPDs provide unparalleled transparency. Architects can compare the carbon footprint of different concrete mixes. Procurement teams can evaluate the full environmental profile of competing products. Manufacturers can identify improvement opportunities across their supply chain.

This transparency is increasingly valuable as regulations like the EU Construction Products Regulation require environmental data. EPDs are becoming essential for accessing certain markets and meeting tender requirements. See how EPDs work in LEED and BREEAM for practical applications.

Understanding EPD Limitations#

EPDs require significant investment. Conducting a full LCA, having it verified, and maintaining the declaration requires expertise and resources. See how much an EPD costs for realistic budget expectations.

Comparing EPDs requires careful attention to system boundaries and methodologies. Two EPDs might use different PCRs or databases, making direct comparison problematic. Users need sufficient knowledge to interpret the data meaningfully. The 2026 edition’s EPD typing requirements, which require declarations to state what data quality and scope sit behind them, should help with this over time.

Footprint Communications (ISO 14026)#

The fourth category in the ISO 14020 family is footprint communications, governed by ISO 14026:2017. A footprint communication reports one or more metrics related to a specific area of environmental concern, such as a carbon footprint (climate change) or water footprint (water scarcity). Unlike EPDs, which report across multiple impact categories, footprint communications focus on a single area of concern.

Footprint communications sit alongside ISO 14067 (carbon footprint of products) and ISO 14046 (water footprint), which define the underlying assessment methodologies. ISO 14026 covers how those results are communicated to different audiences. For manufacturers already producing EPDs, the footprint data is typically already embedded in the EPD’s impact category results, but a standalone footprint communication can be useful where the audience wants a single, focused metric rather than a full multi-category declaration.

Choosing the Right Approach#

The choice between these four categories depends on your goals, resources, and audience.

Choose an ecolabel when: consumer recognition is important; you’re targeting public procurement; your environmental performance clearly exceeds standard criteria; or maximum third-party credibility is a priority.

Self-declared claims fit when: communicating specific attributes quickly is the goal; resources for third-party certification are limited; your claims are simple and easily verified; or testing market response before fuller certification makes sense. Remember that the 2026 edition of ISO 14021 now requires these to sit within a documented programme.

Choose an EPD when: business-to-business transparency is crucial; regulatory compliance requires detailed environmental data; demonstrating comprehensive life cycle thinking is important; or your customers have technical expertise to interpret data.

A footprint communication fits when: your audience wants a single focused metric (such as carbon footprint); you need to communicate one specific environmental dimension clearly; or you’re responding to a particular regulatory or customer requirement around a single impact area.

The Interconnected System#

These four categories aren’t mutually exclusive. A product might carry an ecolabel, make self-declared claims about specific features, have an EPD for detailed technical communication, and publish a carbon footprint communication for a broader audience. Each serves different communication needs.

What’s critical is that all four categories now stem from the same ISO 14020:2022 framework. Whether self-declared or third-party verified, whether simple or comprehensive, environmental statements must be accurate, relevant, based on sound methodology, and sit within a defined programme. The 2026 revisions brought the whole family into alignment on this point.

Implementation Considerations#

Start with robust data. All four categories require substantiation. Even self-declared claims now need a documented programme with defined criteria and evidence behind them.

Consider your full life cycle. Whilst only EPDs require full LCA, understanding your complete environmental profile prevents inadvertently shifting impacts or making misleading claims.

Match the statement to your audience. Consumers respond to simple ecolabels. Technical buyers want EPD detail. A carbon footprint number lands with a general business audience. Choose accordingly.

Beware of proliferation. With hundreds of eco-labels globally, adding another might create confusion rather than clarity. Consider working with established schemes where possible.

Maintain your statements. Products change, standards evolve, and data improves. All four categories require ongoing maintenance to remain valid and credible.

Continuing the Journey: What is an EPD?#

Environmental Product Declarations deserve deeper exploration. EPDs are becoming essential tools for demonstrating environmental performance in technical markets. Their role in green building certification, sustainable procurement, and regulatory compliance continues expanding. See our detailed guide to ISO 14025 for the full picture, including the significant changes in the 2026 edition.