Water Resources

The Idemitsu Group's water risks are managed in group-wide risk management as part of ''risks due to changes in the external environment surrounding our business,'' ''risks due to natural disasters and accidents,'' and ''risks related to climate change and environmental regulations.'' 
Under the "Environmental Conservation Policy," we set goals and conduct wastewater treatment to meet national and local government standards in order to prevent pollution, use Resources effectively, maintain biodiversity, and other aspects of our environmental management system. We are incorporating it into practice.

The Group strives to understand water Resources usage on a global scale, and is identifying water-stressed areas of its business sites with reference to Aqueduct information from the World Resources Institute (WRI). None of the Group's domestic sites are located in water-stressed areas, but the combined water withdrawal ratio for the seven Refineries/Complexes accounts for 98% of the Group's total. Therefore, we will thoroughly manage water quality in Japan and work to reduce water usage and use Resources more effectively through the recycling of water Resources.
The Group also operates in countries and regions where water Resources are not necessarily abundant. Water Resources issues around the world are becoming more serious, and it is said that there are situations and regions where safe drinking water cannot be obtained. Recognizing this situation, we have begun initiatives looking overseas and have published water stress maps.

●Water stress map of our group's main business locations

99% of the group's total water intake comes from Refineries/Complexes. Because Refineries/Complexes use large amounts of water, they are working not only to comply with wastewater standards but also to reduce water usage.
At Refinery, a certain amount of water (seawater or freshwater) is required to cool the process fluids during the petroleum refining process. The freshwater (hot water) used for cooling is circulated and cooled in an air-cooled cooler, and then reused as cooling water for the process fluids, thereby reducing the environmental burden. As a business that uses water, we will continue to strive for even greater recycling of water Resources. Approximately 94% of the water taken in by Refineries/Complexes is seawater, and approximately 6% is industrial water, with a recycling rate of 93% for industrial water in fiscal year 2025.

●Industrial water recycling

At Aichi Complex we share cold water within the petrochemical complex to reduce water usage. By effectively using the cold water discharged from the LNG vaporizers of the neighboring CHITA LNG Co.,Ltd. as process cooling water, we are contributing to a reduction in the amount of water withdrawn throughout the Chita region.

●Cold water distribution through collaboration within the complex

In water Resources utilization, managing water quality when returning used water to the environment is also crucial. When wastewater is discharged, it is treated using multiple facilities to raise its quality to a level that does not adversely impact the environment before being returned to the natural environment. As a result of these continuous efforts, there were zero violations of laws and regulations regarding wastewater water quality management in fiscal year 2025, based on the definition of environmental abnormalities ^*.