Water Management
The water used at LITEON’s plants primarily comes from tap water, supplemented by a small amount of groundwater. The use of this groundwater is legally permitted, and all water discharge adheres to relevant effluent standards. These water resources are mainly utilized for employee daily needs and for equipment operations throughout the plants. The reduction plans include auditing the significant water use and water efficiency and reduction training. In terms of the drainage system, LITEON ensured that the quality of effluent meets the requirements of local environmental protection agencies and does not cause an environmental burden. We also examined if reduction plans are applicable for other sites. A small amount of industrial wastewater is treated by the wastewater treatment facilities inside the plants (by methods such as sedimentation or chemical coagulation) and discharged when the treated wastewater meets the local regulatory requirements. All wastewater produced is either properly treated or discharged to sewage treatment plants. LITEON also regularly entrusts external testing units to inspect the quality and content of the discharged water to ensure that it has no significant impact on the water body where it is discharged.
Water Risk Assessment
LITEON identifies regions with higher water resource management risks by applying both external tools and internal assessment methodologies. For major operational sites, LITEON evaluates potential water‑related impacts using external tools including the World Resources Institute (WRI) tools and IPCC guidelines. Under the RCP 8.5 climate scenario, these assessments identify regions where LITEON faces higher water management risks.
The water risk analysis covers both water scarcity and flooding risks. According to the WRI tools, Tianjin is identified as a water‑scarce area; however, based on further local water condition assessments, no significant operational water risk has been identified at this site. In comparison, the primary water risks faced by Huizhou LITEON include water quality issues and water scarcity.
For sites located in higher water‑risk areas, LITEON closely monitors government policies and local climate developments to enable timely response measures. The company continues to enhance water quality management and evaluates the introduction of water recycling and reuse equipment to improve operational efficiency and reduce water discharge.
In several Asian regions, flooding risk has been identified, including Huizhou, Guangzhou, Dongguan, Thailand, Changzhou, Vietnam, Taiwan headquarters, and manufacturing sites. Disaster response plans and backup arrangements have been established at these locations. When selecting new plant locations, LITEON considers climate and geographical factors as well as local drainage systems. During facility construction, appropriate drainage designs are implemented based on site topography to mitigate flooding risks.
Water Management Performance
LITEON set a target of 6% absolute water reduction by 2026 (2% reduction per year) based on 2023, to reduce LITEON's water withdrawal volume in each area. In terms of management, LITEON uses a management system to monitor water consumption of major operating sites worldwide. We compared the water withdrawal information for the same months with previous year, in order to maintain reasonable use of water and track water conservation results.
Total water consumption of 2024 was 2.02 Mm3 (2,017,668 m3 ) (2.4% lower than 2023) and the intensity was 16.09 m3 / NTD million of revenue (6.7% higher than 2023). LITEON promoted the improvement of water quality and water conservation measures. These measures included implementing the effective management of wastewater, inspecting water-saving appliances, strengthening leakage prevention, improving the recovery rate of water used in the production and reducing the water escape rate of cooling towers. LITEON also strengthens daily management practices such as training.
Water Reuse
The cooling water in chillers is recycled and reused, and a small amount of process cutting water is well treated and recovered into the water system. In addition, plants’ domestic consumption water is also recycled. The water from drinking fountains is recycled and reused as a water source for flushing toilets. The total recycled water in 2024 was 0.215 Mm3 (214,573 m3 ), a decrease of 62,359 m3 compared to 2023. Moving forward, LITEON will expand water recycling and water resource reuse across multiple bases to enhance water resource reuse, reduce overall water consumption, and minimize environmental impact.
For more information, please refer to the 2025 CDP Questionnaire, 2024 CDP questionnaire, as well as the 2023 Water Security questionnaire.
