Water Usage and Recycling
Wafer Works' water intake has had minimal impact on the local area. Both the Yangmei and Longtan fabs are situated in Taoyuan City. According to the World Resources Institute's "Aqueduct Water Risk Atlas," the areas where Wafer Works operates face a medium to low risk of water resource stress. The Longtan fab draws water from third-party providers (tap water) and utilizes surface water collected from rainwater. This water undergoes sedimentation in settling tanks before being recycled for various purposes. Similarly, the Yangmei fab obtains water from third-party providers (tap water) and licensed underground wells. During the establishment and expansion of our facilities, we had consistently submitted water usage plans, which had been approved by the relevant regulatory authorities. These plans were then evaluated by the Taiwan Water Corporation Second Branch to ensure they meet the required water demand. The water source is drawn from the Shihmen Reservoir, which provided an average water supply of 556,730,000 tonnes annually from 2018 to 2022. According to the 46th issue of the 2023 Taiwan Water Corporation Annual Statistics Report, the total water output from the Second District Management Office was 388,825,012 metric tons. In 2024, the Company's total water withdrawal amounted to 1,996,590 metric tons (756,010 tons +1,240,580 tons), accounting for 0.51% of the total water withdrawal, indicating no significant impact on local water resources.
Air conditioning condensate was recycled for use in scrubbers, equipment water was recovered, facility processing units were adjusted for water reuse, and CT system leakage losses were reduced.
Effluent Discgarge
Wafer Works treats all wastewater through proper sewage facilities, ensuring that effluent quality meets the regulatory discharge standards. Regular testing is performed to ensure that the effluent does not significantly impact nearby water bodies. Moreover, Wafer Works has a monitoring and data acquisition system in place to oversee various indices during the wastewater treatment process, including Chemical Oxygen Demand (COD), Suspended Solids (SS), fluoride concentration (F-), and pH levels. This system allows for immediate action in case of any malfunction, preventing environmental contamination. If abnormal water quality is detected, the monitoring system promptly alerts on-duty personnel to take appropriate measures to prevent violations and environmental pollution. Since its inception, Wafer Works has placed a premium on water pollution prevention and water resource management. We continue to promote water recycling initiatives annually, striving to reduce water consumption and protect water resources.
During the reporting period, Wafer Works' water intake was 756.01 million liters for the Yangmei fab and 1,240.58 million liters for the Longtan fab. The total wastewater produced was 708.44 million liters for the Yangmei fab and 1,050.31 million liters for the Longtan fab.
The monitored values of water intake and discharge for Wafer Works' Longtan and Yangmei fabs during the reporting period are as follows:
Water Recycling Rate
Water Circulation Recycling Rate
