Our Focuses｜Environmental Sustainability｜Water Management

Water Management

• Winbond strengthened green semiconductor technology development and fulfilled its responsibilities for green manufacturing. The Water Efficiency Management Policy integrated identification and assessment of dependencies on water, impacts, risks, and opportunities across operations and the supply chain, together with interactions and environmental trade-offs among environmental factors. Across all product life cycle stages, these mechanisms reduced natural water withdrawals and maximized water-use efficiency, promoted on-site water recycling and reuse, continued to reduce pollutants in water discharge, strengthened value chain resilience to water risk, and reinforced water conservation priorities.
• Winbond(Taiwan) manufacturing and operating sites passed ISO 46001 Water Efficiency Management System certification. Winbond strengthened systemized mechanisms for water performance objectives and targets, action plans, performance indicators and baselines, monitoring and data analysis, regular performance review and audit, and daily management of significant water-using equipment. These mechanisms improved water-use efficiency and strengthened water resource utilization through reduction, substitution, or reuse methods.
• The World Resources Institute (WRI) served as the water risk assessment tool. Results from the Aqueduct Water Risk Atlas on the AQUEDUCT website indicated that all manufacturing and operating sites of the Winbond Group were located in low water stress areas. In response to extreme climate conditions, Winbond established crisis handling procedures for major disasters or incidents. Manufacturing sites installed underground water storage tanks and pursued stable water sources to support factory operations. Maintenance plans for water treatment facilities strengthened equipment performance and reliability to mitigate water shortage and water rationing risks during dry seasons.
• To systematically identify Winbond’s nature-related dependencies, impacts, risks, and opportunities, Winbond applies the LEAP approach developed by the Taskforce on Nature-related Financial Disclosures (TNFD) as the foundational framework for its nature-related assessment and disclosure activities. For Winbond, nature-related issues extend beyond resource use, pollutant emissions, and environmental management associated with facility operations. They also encompass nature-related dependencies and impacts arising across the value chain, including raw material sourcing, manufacturing processes, logistics, transportation, and other supply chain activities. Through the LEAP approach, Winbond evaluates its operational sites and supply chain structure to progressively develop a comprehensive understanding of its exposure to nature-related issues. This assessment serves as the basis for determining management priorities, strategic responses, and disclosure content. Additional information is available in the Winbond Group Nature-related Financial Disclosure Report.

Water withdrawal

• In response to the advancement of semiconductor process technology, the consumption of water resources in the manufacturing process has gradually increased, making the reasonable management of water resources an urgent issue.Water sources for Winbond and Nuvoton were primarily tap water. Nuvoton(Japan) used groundwater. All sources were freshwater.
• Winbond’s main source of water is tap water supplied by the Taiwan Water Corporation, sourced from the Liyutan, Deji and A Gong Dian Reservoir. A small portion of the water comes from rainwater and air conditioning condensate.In 2025, total water withdrawal at the Group’s manufacturing sites reached 7,934 megaliters.For detailed data, please refer to the Annual Sustainability Report.

Water Reduction and Reuse

• Winbond (Taiwan) set a mid-term target to maintain an average site-wide water recycling rate above 80% annually
  by 2030. In 2025, recycled water reached 14.068 million cubic meters. The site-wide water recycling rate reached
  82.7%, and the process water recycling rate reached 90.3%, consistent with commitments under the science park
  environmental impact assessment.For detailed data, please refer to the Annual Sustainability Report.
• Ultrapure water served as the primary water consumption point at manufacturing sites. Process improvements
  and technology upgrades reduced ultrapure water intensity year by year. In 2025, ultrapure water use reached 4,345
  megaliters. Ultrapure water intensity reached 0.141 m³ per/layer.Winbond (Taiwan) continued to reduce manufacturing water use and increase recycled water reuse through four dimensions: reducing water withdrawal and water consumption, selecting water-saving designs, optimizing production processes, and improving facility water-use efficiency.For detailed data, please refer to the Annual Sustainability Report.

Nature and Environmental Education: Watershed Stewardship and Sustainable Action

Sustainable Actions to Protect Southwestern Coastal Ecosystems
In response to the challenges posed by climate change and coastal erosion, Winbond continues to support watershed ecosystem conservation and habitat protection. Beginning in 2026, Winbond partnered with the Water Environment Planning and Management Laboratory of the Department of Hydraulic and Ocean Engineering at National Cheng Kung University to promote sustainability initiatives focused on protecting Taiwan’s southwestern coastal ecosystems. Activities conducted at the Qieding Baishalun Wetland aim to enhance understanding of local environmental conditions, climate-related risks, and the important role wetlands play in disaster risk reduction, while encouraging practical low-carbon actions through ecosystem restoration and conservation efforts.
 

Eco-friendly habitat
The Kaohsiung Dashu Old Railway Bridge Wetland contains a variety of habitat types, including marshes, tall grasslands, and secondary shrublands. Through appropriate habitat management, the ecological functions of the wetland can be enhanced, with conservation efforts supporting indicator species such as the pheasant-tailed jacana, painted snipe, Chinese bittern, eastern grass owl, and short-eared owl. In collaboration with the Kaohsiung Wild Bird Society, Winbond participated in habitat enhancement activities at the wetland, including aquatic plant seedling cultivation, floating platform construction, and aquatic vegetation planting. These activities provided opportunities to better understand habitat changes and biodiversity while helping expand habitat space for waterbirds through the use of floating aquatic plant nurseries.