JP EN
Contact Us

Water Resource Conservation

Basic Approach to Water Resources

For our Group, water resources are essential for maintaining and developing our business. At the same time, only a very small portion of the world's water is available for human use. We work to improve the efficiency of our water use, reduce overall water consumption, and minimize the impact on local communities and natural capital.

Initiatives for Water Resource Conservation

To minimize the impact on local communities and natural capital, our Group works to improve the quality of wastewater discharged from our plants. We also monitor water stress that may affect our business using Aqueduct, an evaluation tool provided by the World Resources Institute (WRI). Among our major production sites, we identified one location in Indonesia with high water stress during the summer season. While there is currently no impact on our business, we recognize it as a site where risk mitigation should be prioritized.

AQUEDUCT Water Stress Assessment and Water Withdrawal by Source

Swipe
to scroll
Base Name Location Water Stress Level Water Source FY2022 Water Withdrawal (1,000 m3) FY2023 Water Withdrawal (1,000 m3) FY2024 Water Withdrawal (1,000 m3)
DKS Co. Ltd. Yokkaichi Plant
Chitose Area		 Yokkaichi, Mie, Japan Low-medium Waterworks 4.6 9.6 14.1
Groundwater 20.6 52.6 55.3
Industrial water 174.2 229.0 240.4
Total amount 199.3 291.2 309.8
Yokkaichi Plant
Kasumi Area 		Yokkaichi, Mie, Japan Low-medium Waterworks 2.9 2.2 2.2
Groundwater 0.0 0.0 0.0
Industrial water 31.2 23.3 67.5
Total amount 34.1 25.4 69.7
Ohgata Plant Joetsu, Niigata, Japan Low-medium Waterworks 10.3 9.6 8.9
Groundwater 478.4 580.6 445.2
Industrial water 0.0 0.0 0.0
Total amount 488.7 590.2 454.0
Shiga Plant Higashi-ohmi, Shiga, Japan Low-medium Waterworks 7.1 6.8 6.5
Groundwater 2,279.3 2,008.7 2,541.3
Industrial water 0.0 0.0 0.0
Total amount 2,286.5 2,015.5 2,547.7
Laboratory Kyoto, Japan Low-medium Waterworks 9.8 10.0 10.5
Groundwater 0.0 0.0 0.0
Industrial water 0.0 0.0 0.0
Total amount 9.8 10.0 10.5
Yokkaichi Chemical Co., Ltd. Yokkaichi, Mie, Japan Low-medium Waterworks 19.0 25.3 25.5
Groundwater 0.0 0.0 0.0
Industrial water 935.4 949.5 885.0
Total amount 954.4 974.8 910.6
Chin Yee Chemical Industries Co., Ltd. Taoyuan City, Taiwan Low-medium Waterworks 13.8 20.6 25.8
Groundwater 20.6 0.0 0.0
Industrial water 6.4 8.7 10.9
Total amount 40.8 29.3 36.8
PT DAI-ICHI KIMIA RAYA Indonesia High Waterworks 0.0 0.0 0.0
Groundwater 0.0 0.0 0.0
Industrial water 24.3 28.4 29.8
Total amount 24.3 28.4 29.8
Swipe
to scroll
Water Source Scope FY2022 Water Withdrawal (1,000 m3) FY2023 Water Withdrawal (1,000 m3) FY2024 Water Withdrawal (1,000 m3)
Waterworks Total for applicable sites 67.6 84.1 93.4
Sites located in water-stressed areas* 0.0 0.0 0.0
Groundwater Total for applicable sites 2,799.0 2,642.0 3,041.8
Sites located in water-stressed areas* 0.0 0.0 0.0
Industrial water Total for applicable sites 1,171.4 1,238.9 1,233.6
Sites located in water-stressed areas* 24.3 28.4 29.8
Total amount Total for applicable sites 4,037.9 3,965.0 4,368.8
Sites located in water-stressed areas* 24.3 28.4 29.8
  • The sites in water-stressed areas should be DAI-ICHI KIMIA RAYA, where the water stress level is High in AQUEDUCT

Trends in Wastewater Discharge by Discharge Destination

Swipe
to scroll
Discharge Destination FY2022 Water Discharge (1,000 m3) FY2023 Water Discharge (1,000 m3) FY2024 Water Discharge (1,000 m3)
Fresh surface water 2,157 2,276 2,318
Brackish water/sea water 1,540 1,529 1,418
Groundwater 0 0 0
Third party destinations 23 21 27
Total amount 3,720 3,826 3,764

Trends in the Discharge of Environmental Pollutants into Water Bodies

Swipe
to scroll
Base Name Items FY2022 FY2023 FY2024
DKS Co. Ltd. Yokkaichi Plant
Chitose Area		 Water discharge (1,000 m3) 140 230 238
COD emissions (t) 0.4 0.6 0.7
Total phosphorus emissions (t) 0.0 0.0 0.0
Total nitrogen emissions (t) 0.1 0.2 0.1
Ohgata Plant Water discharge (1,000 m3) 832 703 577
COD emissions (t) 27.6 18.2 9.8
Total phosphorus emissions (t) 0.0 0.0 0.0
Total nitrogen emissions (t) 9.6 3.3 2.5
Shiga Plant Water discharge (1,000 m3) 1,725 1,846 1,933
COD emissions (t) 9.0 10.3 9.8
Total phosphorus emissions (t) 0.4 0.2 0.2
Total nitrogen emissions (t) 1.9 2.4 2.2
Yokkaichi Chemical Co., Ltd. Water discharge (1,000 m3) 989 1,021 952
COD emissions (t) 7.4 8.7 6.7
Total phosphorus emissions (t) 0.5 0.4 0.3
Total nitrogen emissions (t) 2.5 2.9 2.8

Main Initiatives at Each Base

Swipe
to scroll
Base Name Location Specific Initiatives
DKS Co. Ltd. Yokkaichi Plant
Kasumi Area 		Yokkaichi,
Mie, Japan
  • Water quality management based on voluntary standards stricter than regulatory limits
  • Monitoring of plant wastewater quality
  • Participation in the Ise Bay "Forest, River, and Sea Cleanup Operation"
  • Coastal cleanup activities at Nasa-no-Hama, Toshijima
Yokkaichi Plant
Chitose Area
Ohgata Plant Joetsu,
Niigata, Japan
  • Water quality management based on voluntary standards stricter than regulatory limits
  • Purification of plant wastewater via wastewater treatment facilities
  • Monitoring of plant wastewater quality
  • Participation in "Zero Garbage Day" coastal cleanup activities
Shiga Plant Higashi-ohmi,
Shiga, Japan
  • Water quality management based on voluntary standards stricter than regulatory limits
  • Purification of plant wastewater via wastewater treatment facilities
  • Monitoring of plant wastewater quality
  • Participation in "Lake Biwa Day" cleanup activities in the Higashi-omi area
  • Participation in "Environment Day" Uryu River cleanup activities
  • Participation in reed-cutting activities at Lake Biwa and Lake Nishinoko
Yokkaichi Chemical Co., Ltd. Yokkaichi,
Mie, Japan
  • Purification of plant wastewater via wastewater treatment facilities
  • Monitoring of plant wastewater quality
Sustainability TOP