Water Resources Management
Obtained ISO 46001:2019 Water Efficiency Management Systems Certification
Chunghwa Telecom, an industry leader, took the initiative in March 2025 to obtain full-scale ISO 46001 Water Efficiency Management Systems certification. Following international standards, the Company systematically completed the inventory and assessment of high-risk water resource areas, established water usage performance indicators, and developed a comprehensive water efficiency management plan. Although Chunghwa Telecom is not a manufacturing enterprise, we recognize that implementing water resource efficiency management is a crucial step in addressing the uncertainties posed by climate change. By understanding the structure and sources of water usage, we will lay a significant foundation for enhancing the resilience of industrial water use in the future.
To ensure the effective utilization of water resources, we have established two conditions: setting a baseline year and cumulative reduction requirements. Through data management and continuous improvement mechanisms, we aim to enhance water efficiency, achieve sustainable resource utilization, and strengthen overall competitiveness.
Baseline Year Target- The year 2020 is designated as the baseline year, with a target of achieving 1% annual water savings.
Cumulative Reduction Requirement
- As of the current year, if a unit has achieved a cumulative water reduction of 6% or more compared with the baseline year, its annual water consumption must not exceed the previous year's level and should be maintained or further reduced to ensure continued improvement in water-use efficiency.
| Elements of Management Programs | Description |
|---|---|
| Water Use Assessment |
|
| Actions to Reduce Water Consumption |
|
| Actions to Improve Wastewater Quality | Install greywater systems to new buildings to collect and treat domestic wastewater to the specified water quality standards for reuse within a certain range for non-potable or non-body-contact purposes. |
| Application of water recycling |
|
| Awareness training provided to employees on water efficiency management programs |
To enhance employees’ awareness of water conservation and strengthen their capability in implementing ISO 46001, Chunghwa Telecom planned a series of training programs in 2025, including general awareness courses, seed personnel training, regulatory compliance identification, and internal auditor training. A total of eight courses, covering 375 participants and 60 training hours, were organized.
These programs are designed to help ISO 46001 coordinators and related personnel across all organizational units develop competencies in daily water-saving practices, abnormal water-use identification, and improvement planning. Through these efforts, the Company continues to drive improvements in water-use efficiency across all operations and foster a culture of sustainable water resource management. |
| Establishment of targets to reduce water use | Set the target of 1% reduction yearly for water use management, with 2020 as the base year. |
Water Consumption
Unit: million cubic meters
| Water Withdrawal | 2022 | 2023 | 2024 | 2025 | Target for 2025 |
|---|---|---|---|---|---|
| Water Withdrawal | 2.175 | 2.168 | 2.161 | 1.986 | |
| Water Discharge | 0.566 | 0.635 | 0.649 | 0.581 | |
| Total Net Fresh Water Consumption | 1.609 | 1.533 | 1.512 | 1.405 | 1.488 |
Notes:
1. The data encompasses all domestic operational locations of Chunghwa Telecom in Taiwan.
2. Water withdrawal: Includes both tap water and rainwater.
3. Water discharge: Calculated based on domestic water usage plus recycled water. In the future, the calculation will reference ISO 46001 results, using total water consumption minus used water and reused water.
4.Chunghwa Telecom assessed future water supply based on the WRI Aqueduct Water Risk Atlas, by which Taiwan's location is not indicated to be within in a region under water resource stress.
Unit: metric ton
| 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|
| Domestic water use | 566,165 | 634,908 | 646,439 | 578,800 |
| HVAC water use | 1,609,038 | 1,533,227 | 1,511,719 | 1,406,651 |
| Reclaimed water | 7,453 | 4,143 | 2,587 | 1,914 |
Notes:
1. Air Conditioning Water: Primarily used for cooling towers.
2. Recycled Water: Collected and reused water that would otherwise be discharged.
