To cope with the risk of a water shortage or floods caused by climate change, we have formulated a comprehensive water resource management plan in cooperation with the local government and have also set water resource management objectives to handle emergencies (when implementing water restriction measures, a water outsourcing mechanism will be activated if necessary, otherwise the factory's operation loading will be reduced,) water conservation measures, and introduce the ISO 46001:2019 Water Resource Efficiency Management System in 2023 to improve water use efficiency. Relevant measures also include:

• The cumulative value of the tap water meter (industrial raw water) the plant regularly records and declares: weekly tap water consumption declaration to the Industrial Development Bureau's Drought Emergency Response, monthly water consumption and water resources management information, annual declaration of water resource management information, and annual flowmeter calibration for each water-consuming facility at the plant sites.
• Continue to promote improvement projects in manufacturing process and technology: invested NT$68 million to build a wastewater recycling system in the Linyuan plant. The production capacity for reclaimed water is 1,000 MT per day, with the wastewater recovery rate  up to 70%, which can be used for cooling water tower replenishment.
• In 2022, the total recycled water production was about 97,732 MT/year (about 269 MT/day), and the wastewater recovery rate was about 55.9%. In addition, OUCC also responded to the survey of willingness for the usage of recycled water, intending to utilize 1,500 MT/day and 50% reclaimed water.