Updated August 2025
Recognizing the global issue of climate change, the Company also recognizes that limited water resources are a global issue. In addition to maintaining and improving water quality in discharged water from business sites to public water areas such as oceans and rivers, the Company recognizes that water resources are indispensable for continuing production activities and that efficient utilization is important. The Company effectively utilizes water resources to generate hydroelectric power. Water resources are also related to climate change, and the Company’s sites are predicted to be affected by droughts, heavy rains, and floods. Therefore, the Company believes that it is important to assess and prepare for risks that are expected in the future.
At major plants such as the Chiba Plant and Omi Plant, we are reusing water and reducing water intake by circulating cooling water for equipment. In addition, since fiscal 2021, we have been conducting water risk assessments at Denka Group's sites using the water risk map (Aqueduct). For our domestic sites, we are also conducting more detailed risk assessments through current evaluations of water intake, discharge, and recycling. In fiscal 2024, water usage increased slightly from the previous fiscal year due to an increase in production volume. Regarding water usage reduction, we plan to continue implementing measures focusing on the maintenance and recovery / reuse of our piping.
| Scope | Unit | 2021年度 | 2022年度 | 2023年度 | 2024年度 | FY2025 Targets |
||
|---|---|---|---|---|---|---|---|---|
| Water Withdrawl | Fresh surface water | Non-consolidated sites | Megaliters | 32,889 | 32,700 | 33,035 | 35,038 | 35,851 |
| Groundwater | Non-consolidated sites | Megaliters | 24,832 | 25,204 | 25,456 | 27,238 | 27,993 | |
| Third-party water sources (municipal water supply) | Non-consolidated sites | Megaliters | 536 | 547 | 482 | 479 | 482 | |
| Water withdrawl（※1）from water-stressed areas | Non-consolidated sites | Megaliters | 0 | 0 | 0 | 0 | 0 | |
| Total | Non-consolidated sites | Megaliters | 58,257 | 58,451 | 58,973 | 62,755 | 64,326 | |
| Usage amount | Non-Consolidated | Non-consolidated sites | 1,000 m 3 | 58,257 | 58,451 | 58,889 | 62,755 | 64,331 |
| Domestic / Overseas Key production facilities | Domestic / Overseas Key production facilities | 1,000 m 3 | 50,464 | 47,166 | 64,952 | 65,247 | 65,274 | |
| Total | Non-consolidated sites / Domestic & Overseas Key production facilites | 1,000 m 3 | 108,721 | 105,617 | 123,841 | 128,002 | 129,605 | |
| Total drainage volume | Non-consolidated sites | Megaliters | 55,336 | 56,107 | 56,642 | 60,280 | 61,648 | |
| Number of sites with high water risk and water stress | Non-consolidated sites / Domestic & Overseas Key production facilites | Number of sites | 4 | 4 | 4 | 4 | - | |
| Percentage of sites with high water risk and water stress (consolidated) | Non-consolidated sites / Domestic & Overseas Key production facilites | % | 16% | 16% | 16% | 16% | - | |
The Company recognizes that its manufacturing plants with high water risk are located in Vietnam and China, and that its business establishment with high water stress is located in China (Suzhou). The Company has determined that approximately 16% of its major sites, which account for over 90% of its sales, are located in areas with high water stress. The Company will continue to evaluate and improve water risk in accordance with the establishment of new bases and the conduct of business activities.
Consideration for the Global EnvironmentDenka is committed to global environmental preservation based on Responsible Care, an initiative promoted by the global chemical industry. As a responsible chemical manufacturer, Denka will continue to address the issues of global environmental preservation.
2050 Roadmap Efforts to Reduce Environmental Impact Efforts for Environmentally Conscious Products Environmental Accounting
Denka Group is committed to achieving its target of "net zero CO2 emissions" by 2050. To this end, we have set the interim target of reducing CO2 emissions by 60% from the fiscal year 2013 level by 2030.
Denka accurately understands the environmental burden substances emitted from the production facilities of Group companies and is working on their continuous reduction. The substances targeted include greenhouse gases such as CO2...
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hydroelectric power plant (Map) *As of August 2025 / Including our joint venture company's power plant. Private power plant and maximum output (20...
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Issues of the Company Group Specific Initiatives Water Resource Data Water Risk Assessment ...
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