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Glossary termPublished inCSDDD

Adverse environmental impact

What does "Adverse environmental impact" mean under the CSDDD?

An adverse impact on the environment resulting from the breach of the prohibitions and obligations listed in Part I, Section 1, points 15 and 16, and Part II of the Annex to this Directive, taking into account national legislation linked to the provisions of the instruments listed therein

Defined in / by

Last updated: 13 October 2026.

What the Annex lists

The definition sets no general standard of environmental harm. It points to a closed list in the Annex. Two of its three references sit in the human rights part of the Annex, not the environmental one. Part I, Section 1, point 15 prohibits causing measurable environmental degradation, such as harmful soil change, water or air pollution, harmful emissions, excessive water consumption, degradation of land or deforestation, where the degradation impairs the natural bases for food, denies safe drinking water, hinders access to sanitation, harms a person's health, safety or use of land, or adversely affects ecosystem services. Point 16 protects the right of individuals, groupings and communities to lands and resources, including the prohibition to unlawfully evict or take land, forests and waters.

Part II then lists prohibitions and obligations from environmental instruments. The first nine points cover, among others, the Convention on Biological Diversity, CITES, the Minamata Convention on Mercury, the Stockholm Convention on Persistent Organic Pollutants, the Rotterdam Convention and the Montreal Protocol. The definition adds that national legislation linked to the provisions of those instruments is taken into account.

The practical consequence is that an environmental harm enters the Directive through a breach of a listed prohibition or obligation, not through its size alone. A company mapping its exposure starts from the Annex text and works outwards to its own activities, not the other way round.

Questions and answers

Is every pollution event an adverse environmental impact?
Where in the Annex are the environmental provisions?

Glossary

  • Adverse impact

    An adverse environmental impact or adverse human rights impact.

Regulations

  • Corporate Sustainability Due Diligence Directive (CSDDD)

    The Corporate Sustainability Due Diligence Directive is Directive (EU) 2024/1760. After Omnibus I, Member States must transpose it by 26 July 2028 and apply it from 26 July 2029, to companies with more than 5,000 employees and EUR 1.5 billion in net worldwide turnover. The Netherlands has a draft bill, the Wivo, which names the ACM as supervisor.

    Next
    Commission adopts guidelines under Article 19(2), points (a), (d) and (e), and guidance on model contractual clauses (Article 18)