Water Resources Management
Wistron's production processes mainly consist of product assembly which does not require a significant amount of water. Most of our water demand derives from domestic use and plant equipment such as kitchens and cooling towers. Our evaluations confirm that our source of water for plants and offices is tap water, which amounts to not obvious environmental impact on water resources and the ecological environment of water sources. Nevertheless, Wistron still actively collects water consumption data and regularly monitors water quality and consumption conditions. We organize water conservation campaigns from time to time for the purpose of protecting water resources.
Wistron’s management of water resources can be divided into “water resource management and daily water conservation” and “water recycling and wastewater management.” We took stock of high-risk areas for water resources based on an evaluation of the water stress indicators of our global operations. We then implement preventive measures based on the water resource management strategy. Dedicated units in different plants are responsible for water resource management, plan formulation and implementation, regular monitoring, resolution of irregularities, data analysis, and continuous improvements. Wistron is committed to rigorous compliance with national water regulations, reasonable water use, giving priority to water-efficient equipment, and using energy-efficient panels to monitor water consumption and improve water use efficiency.
Wistron's water target in 2023 is to reduce water consumption intensity by 11% from 2016 and set more ambitious goals for 2030, and 2035 while continuing to track and disclose the water conservation outcomes each year.
Water Consumption
Unit: Million cubic meters
|
2020 |
2021 |
2022 |
2023 |
| Water withdrawal |
5.17 |
4.09 |
3.81 |
2.63 |
| Water discharge |
4.17 |
3.23 |
3.02 |
2.03 |
| Total net fresh water consumption |
1.00 |
0.86 |
0.79 |
0.60 |
| Recycled/Reused Water Volume |
0.66 |
0.37 |
0.29 |
0.16 |
- Notes 1：Total net fresh water consumption target in 2023 was 0.79 million cubic meters.
Water Usage Performance Indicators
| Performance Indicators |
Unit |
2020 |
2021 |
2022 |
2023 |
| Water usage per unit-revenue |
Kilotons of water / NT$ 1B |
7.9 |
6.3 |
5.6 |
4.0 |
| Water recycling rate |
Percentage (%) |
12.76 |
8.93 |
7.65 |
6.27 |
- Notes 1：Water consumption intensity: Includes water consumption and revenue of major Wistron plants around the world.
- Notes 2：Water intensity in 2016 was 6.7 kilotons / NT$ 1B.
Actions and Results
01 | Reduce water consumption
To implement the water conservation policy, Wistron set the 2023 water conservation target to reduce water intensity by 11% compared to 2016. Through water resource management and daily water-saving policies, water conservation projects were divided into daily water-saving, recycling, and management. In 2023, the total water saved amounted to approximately 50,645.3 M³, reducing water intensity by 41% compared to 2016. Although Wistron's water use is primarily for domestic purposes, the company actively improves water resource utilization efficiency, achieves water conservation goals, saves costs, and promotes sustainable development.
| Type |
Actions |
Annual Water Savings (M3) |
| Daily Water Savings |
Adjusting Water Supply in Living Areas |
35,403.8 |
| Recycling |
1. RO Wastewater Discharge Reused in Cooling Tower
2. Reuse of RO Purified Water System Effluent (for Cooling Tower) |
14,441.5 |
| Management Wate Savings |
Implementation of Water Control System |
800.0 |
| Total |
50,645.3 |
02 | Water Recycling Practices and Wastewater Management
Water Recycling Practices
Effective water management can significantly reduce a company's water usage, decrease reliance on natural water bodies, and reduce dependency on aquatic ecosystems. Wistron’s water recycling mainly involves public facilities and process-related management, including air conditioning condensate recovery, RO wastewater recovery, and process RO wastewater reuse. These efforts actively enhance the use of water resources across global manufacturing plant.
Wastewater Management
Wistron strictly adheres to regulatory requirements and internal standard procedures at all operational sites to manage wastewater effectively through proper treatment facilities. Wistron's primary wastewater management is divided into domestic water and process water. Domestic water is treated through primary, secondary anaerobic ponds, and clarifiers before being discharged through outlets, ensuring compliance with regulations. Some plants generate process wastewater during production, which is treated through collection tanks and reaction tanks before being discharged into local designated sewage pipelines and sent to local designated Sewage treatment plants for unified treatment.
03| Water Stress Index
In 2023, we use WRI Aqueduct tools to analyze water stress index of Wistron locations around the world, evaluating the risk ratings of water resources to set up management and recycling equipment in advance. In addition, we disclose water sources, water bodies receiving the effluent, wastewater treatment unit, and water quality data to ensure compliance with local effluent quality standards.
Based on the results from the WRI Aqueduct tools, Kunshan Plant, Kunshan Opt Plant, and Chengdu Plant are located in high water pressure areas. Kunshan Opt Plant consume water and have an in-house wastewater treatment station that is monitored online in real-time to enable immediate response to any anomalies. Wastewater from other plants mainly consist of domestic wastewater, which are collected through industrial park pipelines and delivered through the sewage system to the wastewater treatment plant for processing and discharge. It is not directly discharged to natural bodies of water. To monitor the effluent quality, Wistron regularly inspects the water quality to ensure that the effluent meets regulatory requirements and does not affect the ecological environment of natural water bodies and habitats.
| High water stress areas |
|
Kunshan Plant |
Kunshan Opt Plant |
Chengdu Plant |
| Water withdrawal(M3) |
148.73 |
369.19 |
149.10 |
| Percentage of revenue(%) |
32.6 |
|
|
