Effective Resource Utilization (Water Resources)

Effective Resource Utilization (Water Resources)

Fundamental Policies

The Oji Group strives to reduce water intake by improving operation and water recycling and identifying regions with high water-related risk. We also incorporate water intake and water intake intensity taken into our annual plans and carry out regular management. We will continue to promote Group-wide initiatives for the effective utilization of water resources and the reduction of water intake.


Reduce water consumption intensity (unit per production) by 6% or more compared to FY2018

Water Resources

Assessment of water risks

The Oji Group uses WRI Aqueduct* to assess water risks in projects, new business, an existing business. In existing businesses, the Group identifies relationships between water stress levels and water resource inputs at all manufacturing sites of consolidated subsidiaries.
Water consumption in areas with low water risk accounts for 99% of total water consumption and for 98% of total production.
The paper and pulp business accounts for 84%, and the corrugated board processing business accounts for 15% of total water consumption in these areas.
On the other hand, water consumption in areas with high water risk, there is no pulp manufacturing and mainly paper processing manufacturing, and paper processing manufacturing account for 1% of each total water consumption and total production.
The Oji Group is implementing PDCA by incorporating the reduction of water resources into the ISO14001 target, including areas with high water risk.
Each business site is continuously working on water recycling, stable operations, and efficient water use in order to reduce water intake and consumption. Costs associated with water risk reduction in fiscal 2020 were 6,056 million yen, and investments including research and development costs were 675 million yen.

Water Risk Assessment

You can see this table by scrolling horizontally.
Overall water assessment
(water stress level)
Number of business sites ①Water intake
(thousand m3)
(thousand m3)
Water consumption
(thousand m3)
(kilo ton)
Sales Revenue
(Millon yen)
(Millon yen)
Low (<10%) 73 274,120 39% 260,428 39% 13,692 40% 6,316 44% 11,670 97% 18,513 97%
Low to medium (10-20%) 114 313,101 44% 298,576 44% 14,525 42% 5,271 37%
Medium to high (20-40%) 93 117,337 17% 111,574 17% 5,763 17% 2,521 18%
High (40-80%) 7 1,586 0% 1,301 0% 285 1% 118 1% 411* 3%* 501* 3%*
Extremely high (>80%) 7 155 0% 86 0% 69 0% 87 1%
Total 294 706,298 100% 671,965 100% 34,082 100% 14,313 100% 12,081 100% 19,014 100%
  • *Sales and assets of the business sites in high water stress areas (40% to 100%)
  • Classification by the Water Risk Atlas Index of WRI AQUEDUCT (3.0) https://www.wri.org/aqueduct

Water Intake and Wastewater

Water resources used in the manufacturing process are purified. By returning approximately 95% of the water we take into rivers and the ocean, we are working to reduce the environmental impact caused by the depletion of water resources.

Water intake, Wastewater, Consumption
The reduction rate of water intake compared to FY 2018
Water Intake and Intensity
Wastewater and Destinations

Reduce water consumption and water recycling

A large amount of water is required for the manufacture of paper and pulp. But the Oji Group is reducing water consumption*1 by improving operations and reducing the amount of water intake by treating and reusing (recycling) water after use.

  • *1Water consumption; the amount of water that does not return to rivers and oceans due to evaporation in the manufacturing process or moisture in products.
    Water consumption = amount of water intake - Amount of wastewater

The paper mill maintains a 93% recycling rate by reusing (through cascading processes) and recycling the water it takes in without waste. In the paper-making process, we also recover raw materials (such as fine fibers) contained in the water used to dilute the pulp when it is recovered and reuse the raw materials.

Wastewater and Destinations
Wastewater and Destinations

Examples of water recycling initiatives

CENIBRA (Brazil)

Recovery and effective utilization of cooling water

Oji Fibre Solutions (New Zealand)

New installation of water treatment facilities that enable recycling of previously unused wastewater generated in various manufacturing processes and other measures.

Examples of water resources management initiatives

CENIBRA (Brazil)

CENIBRA's eucalypt plantations and pulp production use water from the Doce River basin in the region. In recent years there has been less rainfall than usual, and the risk of a water shortage has been a concern for whole region, so CENIBRA identified the subbasins of major influence based on regular waterflow monitoring at each waterpoint, to focus on the water conservation activities for these subbasins in cooperation with public authorities as follows:

Construction of water reservoirs in the forest: CENIBRA constructed 51 reservoirs in its own forest from 2018 to 2020, enabling a total of more than 1 million m3 of water to be stored, enabling excess water during the rainy season to slowly filter into the soil, later into the river, maintaining the level of the water table in the basins. The location of these reservoirs was determined in consideration of the water supply for residential use, increasing harmony with the local communities regarding the use of water resources.

Construction of water reservoirs in the forest

Subsoiling: In recent years CENIBRA has developed subsoiling activities before planting seedlings, enhancing regular rainwater infiltration into soil that has been compacted by the activity of heavy machinery in its own forests. Now CENIBRA is transferring this technique and expertise to aid the surrounding lands, especially lands for grazing, to contribute to the recovery of underground water retention in compacted pasture lands, as well as the prevention of erosion resulting in better water quality in the basin.


Provision of septic tanks to third parties: As an initiative to improve the water quality in the streams and the overall health of local communities in the regions where it operates, CENIBRA donated 100 septic tanks in 2020. They are used to treat household effluent on the rural properties in the regions, including the participants in the Forest Incentive Program promoted by CENIBRA.

Provision of septic tanks to third parties