Global Water Sustainability Index sets new standard for corporate ESG reporting

illuminem summarises for you the essential news of the day. Read the full piece on ESG News or enjoy below:

🗞️ Driving the news: Researchers from Stanford and Korea University have launched a new Water Sustainability Index (WSI)
• It is a standardized, quantitative framework designed to measure corporate water performance and reduce ESG greenwashing

🔭 The context: While carbon accounting has become increasingly standardized, water reporting remains fragmented
• Only 9% of major companies disclose total water withdrawals and just 1% report recycled water use
• The WSI evaluates withdrawals, consumption, discharge quality, reuse and local watershed stress, aligning reporting with UN Sustainable Development Goal 6 on clean water

🌍 Why it matters for the planet: Water risk is local and acute, with roughly 25% of the global population living in water-stressed regions
• Poor corporate water management can worsen scarcity, degrade ecosystems and intensify climate vulnerability
• By integrating watershed stress into scoring, the WSI could redirect capital toward water-efficient operations and infrastructure upgrades where they are most needed

⏭️ What’s next: Adoption by investors and ESG raters will determine whether it becomes a new reporting standard

💬 One quote: “Water is fundamentally different from carbon… ESG metrics must reflect that reality.” — Prof. Yong Sik Ok

📈 One stat: A test facility improved its WSI score from 1.17 to 3.0 through reuse and water-quality upgrades

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