🧾 CSRD introduces mandatory sustainability reporting for thousands of EU companies
💧 Disclosure E-3 requires detailed reporting on water use, discharges, and risks
📊 Companies must quantify water consumption across operations and value chains
🌍 Focus areas include water stress, pollution, and marine ecosystem impact
📉 Non-compliance may impact investor confidence, creditworthiness, and reputation
From 2024 onward, the EU’s new Corporate Sustainability Reporting Directive (CSRD) is transforming ESG reporting across the bloc. Over 50,000 companies will soon be required to disclose environmental and social data with the same rigour as financial accounts. Among the 12 environmental disclosure categories, E-3: Water and Marine Resources stands out as both technically demanding and materially urgent.
What is E-3?
Disclosure E-3 focuses on a company’s interaction with water systems and marine environments. It builds on the EU Taxonomy and aligns with global standards like the TCFD and CDP Water Security framework. At its core, E-3 asks companies to:
- Quantify water withdrawals, consumption, and discharges by source and location
- Identify operations in water-stressed areas, based on credible datasets (e.g. WRI Aqueduct)
- Disclose water-related dependencies and risks, including supply chain vulnerabilities
- Report on pollutant discharges, treatment methods, and marine biodiversity impacts
- Set and track science-based water targets, aligned with basin-level sustainability
The directive applies not just to manufacturing or utilities. Even service-based companies are expected to assess office operations, data centre cooling, and upstream activities like cloud infrastructure or food service partners.
Why it matters
Water is fast becoming a financially material issue. In 2022 alone, droughts cost European economies over €20 billion, with sectors like energy, agriculture, and beverages heavily impacted. Rating agencies and institutional investors increasingly factor in water security and resilience. For many companies, disclosing water risk is no longer optional—it’s a fiduciary duty.
Failure to report under E-3 could mean more than just regulatory non-compliance. Companies risk losing access to green financing, facing litigation, or suffering reputational damage in water-stressed regions.
From ambition to data
The challenge? Most companies are unprepared to deliver the granularity E-3 demands. Existing environmental reports often lump water into a single KPI—total use per site or region. E-3 requires geographically disaggregated, source-specific, and value-chain-aware reporting.
That means going beyond internal meters. Companies must:
- Use geospatial tools (e.g. QGIS, Google Earth Engine) to map operations and water basins
- Integrate satellite monitoring or third-party assessments for irrigation, runoff, or evaporation
- Work with suppliers to collect primary data—or model it where gaps exist
- Link water KPIs to financial performance and governance structures
What comes next?
In 2024, large public-interest companies (over 500 employees) begin reporting under CSRD. In 2025, the scope expands to other large firms. By 2026–2028, even SMEs and non-EU firms operating in Europe will be covered.
The CSRD is not just bureaucracy. It reflects a paradigm shift: sustainability is no longer extra-financial. Water, once seen as abundant and cheap, is becoming a constrained input and strategic risk. E-3 puts it at the heart of the corporate accountability agenda.
