Water Management

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Marubeni official website. This page offers you information about our Water Management.

★Environment > Water Management > Policy

EnvironmentWater Management


Recognition of Water Resources

The earth’s water resources are said to be about 97.5% seawater, with only 2.5% fresh water that can be used for farming and drinking. And about 99% of that fresh water is contained in ice in places like the Antarctic, so there is very little fresh water available for direct use.
Through its businesses across the world, Marubeni recognizes that developed countries are able to fully enjoy these finite water resources, while other countries do not even have adequate wells, and this regional imbalance is a major problem. Future water shortages are also anticipated, accompanying increases in world population and economic growth in the developing countries. The effective use of water resources is a global issue, and the international society is starting to take actions.

Water Resources Policy

Based on the Marubeni Group Environmental Policy, the Marubeni Group recognizes that energy and resources, including water, are finite, and take measures to ensure their effective and efficient use.
In the Marubeni Group Environmental Policy, we clearly state our commitment to using energy and resources, including water, efficiently. By reducing water usage through promotion of efficient use and recycling of water, and by providing stable supplies of water resources through effective water and sewerage operation and power and desalination projects, we will continue to contribute to the environment and communities and to resolving water-related social issues.


Formulation of the Marubeni Group’s Water Management Plan

As of March 31, 2022, 39 (18%) of the 215 Marubeni Group companies had established water management plans. (Of the 2,446 operation sites covered by the “Sustainability survey”, 307 operation sites that account for 13%, had established water management plans.) These companies monitor and manage the amount of water withdrawal, waste water, and recycled water, as well as quality and temperature of waste water, and take measures to use water resources effectively and reduce their environmental impact.
Koa Kogyo Co., Ltd., for example, uses water efficiently in production processes, and sets and manages standards for the amount of fresh water used in each department, as part of its efforts to conserve resources.

Since large quantities of water are needed in papermaking operations, Koa Kogyo secures the necessary water from both industrial and well water sources and recycles water in the manufacturing process. In waste water, strict water quality standards are met by using activated sludge tanks to reduce chemical oxygen demand (COD) and biochemical oxygen demand (BOD) and by purifying water.

Click here to view Koa Kogyo’s initiatives (Japanese only)

Another example, The Nisshin OilliO Group, Ltd. has set the target of reducing water consumption (tap water and industrial water) intensity at its four production bases in Japan in the fiscal year ending March 31, 2031 by 16% compared to the fiscal year ended March 31, 2017, and is implementing reduction measures and progress management to meet that goal.

Click here to view Nisshin OilliO’s initiatives (Japanese only)

Initiatives in Water-Stressed Regions

  • Taweelah B
  • Taweelah B
    Taweelah B Power & Desalination Complex

The Marubeni Group owns and operates four IWPP*1 projects and one IWP*2 project in Middle East. In total, 539 million imperial gallons of desalination water per day are produced by those desalination plants, helping to reduce stress on the region’s water resources.
For example, the Taweelah B power and desalination complex, located 80 kilometers northeast of Abu Dhabi, which we built and operate, has generation capacity of 2,000 megawatts of electricity and 160 million imperial gallons of water per day. To meet increased water demand resulting from economic development and population growth, the Marubeni Group is selling electricity and water for 20-25 years to the state-owned utility, Emirates Water & Electricity Company. Water from the plant is used for tap water (household and commercial), agriculture, industry and other applications, and helps to relieve stress on water resources. (To prevent exacerbation of the region’s water stress, machinery cooling water and other water used in the Marubeni Group’s business operations is produced at the desalination plant.)

IWPP Projects and IWP Project in Middle East (as of March 31, 2022)
Project Gross Desalination Capacity (Million imperial gallons per day)
Taweelah A2 50
Taweelah B 160
Fujairah F2 130
Shuweihat S2 100
Shuqaiq 3 99
  • IWPP: Independent Water and Power Producer
  • IWP: Independent Water and Producer

Initiatives in Municipal Water / Wastewater Treatment

Through its concession businesses*3 and the BOO*4 project, the Marubeni Group contributes to the supply of safe drinking water and reduces burdens on the environment through effective wastewater treatment.

The concession businesses and BOO project we operate in Chile, Brazil, the Philippines, Portugal and Peru have a total water purification capacity of 3.8 million cubic meters per day and wastewater treatment capacity of 1.9 million cubic meters per day, and cover a service population totaling approximately 14.5 million people.

  • Concession business: Investment into and operation of a private company which has been given the right to conduct water services by a municipality
  • BOO: Build Own and Operate water processing plant
Concession Business in the Philippines
  • Maynilad
    Maynilad Water purification plant
  • Maynilad
    Water supply in Maynilad

One example of the Marubeni Group’s concession businesses is our investment in and personnel dispatch to Maynilad Water Services, Inc. (Maynilad), a water and sewerage company serving the West Zone of Metro Manila in the Philippines, which has a population of 10.5 million people.

Amid the region’s ongoing urban expansion and increased congestion, Maynilad is expanding its water distribution network to increase the coverage of water supply services. In addition, it continues to provide a stable water supply to some 1.5 million households in the concession area by promoting more efficient use of water resources with measures to prevent water pipe leakage and improve water pressure. At the same time, as a medium-to-long-term goal, it is working to raise the currently low percentage of the population connected to the sewage system, to improve the sanitary environment both in normal times and during flooding, and to improve the water quality of the region’s water system and Manila Bay, through development of sewage treatment facilities and the sewerage network in its service area.

At Maynilad, the effects of operational shutdown caused by physical damage etc. to the facility due to disasters or extreme weather is quantified. Specifically, several of Maynilad’s important business locations such as the purification plant, pumping station, and water distribution network are chosen as samples, and the economic impact of operational shutdown is calculated by period, to be used for developing the business continuity plan.

Outline of Maynilad's Business (as of March 31, 2022)
Treatment Facilities Treatment Capacity
Water purification plant 2,700 thousand ㎥/day
Sewage treatment plant 663 thousand ㎥/day
Sludge treatment plant 1,100t/day
Wastewater Treatment in Qatar
  • Doha West sewage treatment plant
    Doha West sewage treatment plant
  • Lusail sewage treatment plant
    Lusail sewage treatment plant
  • Lusail sewage treatment plant
    Lusail sewage treatment plant

Marubeni has participated from the construction stage at the Doha West, Doha North, and Lusail Sewage Treatment Plants, which are the major sewage treatment plants in Doha, the capital of Qatar with approximately 2.7 million people. At the Doha West and Lusail Plants Marubeni had conducted the operation and maintenance for approx. 10 years after the construction. The greywater (treated water made by sterilizing sewage water, for industrial and consumer use) which is generated during the sewage treatment process is delivered daily to roadside vegetation, parks, and farms across Doha through the greywater pipe network. It plays an important role by supporting the social infrastructure in Doha, the land of desert, and Marubeni engaged in a sustainable contribution activity in regions with insufficient water supplies through recycling of the valuable water resources.

The amount of water treated daily at each plant is shown below. 385,000㎥ of greywater was supplied across Doha per day.

Sewage Treatment Plant in Qatar Sewage Treatment Plant Capacity
Doha West sewage treatment plant 340 thousand ㎥/day
Doha North sewage treatment plant 439 thousand ㎥/day
Lusail sewage treatment plant 60 thousand ㎥/day
Treatment Capacity 839 thousand ㎥/day


Water Withdrawal

<Click here to view Tokyo Head Office's targets to be achieved by FYE 3/2026>

  • (Unit: thousand ㎥)
  FYE 3/2018 FYE 3/2019 FYE 3/2020 FYE 3/2021 FYE 3/2022
Marubeni Corporation 4 4 5 396 409
Marubeni Corporation's consolidated subsidiaries 50,525 55,251 54,892 80,690 82,232
Total 50,529 55,256 54,897 81,086 82,641
Mibugawa Power Company 210,252 217,254 225,857
Grand total     265,149 298,340 308,498
〈Water Withdrawal by Source〉
  • (Unit: thousand ㎥)
  FYE 3/2018 FYE 3/2019 FYE 3/2020 FYE 3/2021 FYE 3/2022
Surface water from rivers, lakes, natural ponds 34,216 34,395 240,094 281,997 291,171
Underground/wells 7,706 6,917 9,471 10,459 10,510
Used quarry water collected in the quarry 0 0 0 0 0
Municipal potable water 1,113 5,683 5,767 5,073 5,810
External water discharge 7,418 8,070 9,566 237 549
Harvested rainwater 2 0 0 0 0
Sea water, water extracted from the Sea or the Ocean 73 193 231 575 458
Total 50,529 55,256 265,130 298,340 308,498
  • From FYE 3/2020, the river water withdrawn by Mibugawa Power Company for hydroelectric power generation business is included in the figure.
  • Mibugawa Power Company's business is small and medium-sized hydroelectric power project, mainly using flow-in water (self-flowing water). Click here to view detail of the company.
  • From FYE 3/2021, raw water withdrawn by companies engaged in water supply and sewerage services, as well as industrial water supply and wastewater treatment as part of their business, is included in the figure of water withdrawn.

Water Withdrawal from Water-Stressed Regions

By referring to Aqueduct tools and databases developed by WRI (World Resources Institute), the Marubeni Group identifies regions of which water stress level is “high” or more (“relevant areas”), and through internal reviews such as “Sustainability Data Survey,” we survey the amount of water withdrawal from the relevant areas.
30 operation sites that have been identified by the “Sustainability Data Survey” with aggregated data as of the end of March 2022, operate in the watershed areas of Gulf Coast, Mississippi-Missouri, Rio Grande-Bravo, Saskatchewan-Nelson, Kansas, California, Texas, Minnesota, North Carolina, North Dakota in North America, Chao Phraya River in Southeast Asia with relatively high water stress. There is a total water withdrawal of 198 thousand ㎥ in these regions, and we are aware that this is equivalent to 0.2% of 82,641 thousand ㎥, the amount of water withdrawal for the whole Marubeni Group excluding the portion used for hydroelectric power. (Furthermore, we have confirmed that no operation sites face comprehensively high water risk, such as the amount of physical water resources, pollution by waste water, regulations, or assessment of nearby regions.)

Water Discharge

  • (Unit: thousand ㎥)
  FYE 3/2018 FYE 3/2019 FYE 3/2020 FYE 3/2021 FYE 3/2022
Marubeni Corporation 4 4 5 396 409
Marubeni Corporation's consolidated
44,936 38,818 47,883 68,043 69,781
Total 44,940 38,822 47,888 68,439 70,190
Mibugawa Power Company 210,252 217,254 225,857
Grand total 44,940 38,822 258,140 285,693 296,047

〈Water Discharge by Destination〉

  • (Unit: thousand ㎥)
  FYE 3/2018 FYE 3/2019 FYE 3/2020 FYE 3/2021 FYE 3/2022
Ocean 10,983 13,445 12,643 11,321 11,416
Surface water 33,070 24,590 240,738 268,138 278,167
Underground/wells 3 4 3,790 3,838 3,819
Off-site water treatment 884 783 969 1,967 1,911
Others 0 0 0 430 734
Total 44,940 38,822 258,140 285,693 296,047
  • The quality of discharged water is appropriately managed based on the laws and regulations of each country and region.
  • From FYE 3/2020, the river water used by Mibugawa Power Company for hydroelectric power generation business is included in the figures.
  • Mibugawa Power Company's business is small and medium-sized hydroelectric power project, mainly using flow-in water (self-flowing water). Click here to view detail of the company.
  • From FYE 3/2021, the amount of water discharge includes wastewater from sewage treatment projects.

Water Recycling Rate

  • (Unit: thousand ㎥)
  FYE 3/2019 FYE 3/2020 FYE 3/2021 FYE 3/2022
Water withdrawal 50,529 54,878 81,086 82,641
Recycled amount 16,120 18,008 42,028 57,270
Recycling Rate 32% 33% 52% 69%
  • The scope of the water recycling rate includes Tokyo Head Office, branches and Marubeni Corporation's consolidated subsidiaries.
  • The portion used for hydroelectric power are excluded from water withdrawal.

Number of Legal or Regulatory Violations Related to Water Withdrawal and Water Discharge

In the fiscal year ended March 31, 2018, the Marubeni Group was found to have one violation related to the amount of water discharge in Queensland, Australia, and was fined 12,190 Australian dollars by the Department of Environment and Heritage Protection.
This infraction occurred when water in excess of the permissible amount was released into an adjacent river from a water storage dam on a site related to the Marubeni Group because of record downpours associated with a cyclone.
In addition to constructing a run-off channel and expanding the capacity of the dam, our response included completing changes to environmental approvals and permits related to increasing the amount of water discharge with the department. The results of a water quality test showed that there was no harm to the environment.
In the period from FYE 3/2019 to FYE 3/2022, there were no violations of laws or regulations concerning water withdrawal and water discharge.

Water Consumption Intensity in Pulp and Paper Production

(Unit: ㎥/ton)

  Total of Koa Kogyo Co., Ltd.,
Fukuyama Paper Co., Ltd. and
PT. Tanjungenim Lestari Pulp and Paper
FYE 3/2019 35.8
FYE 3/2020 37.9
FYE 3/2021 37.0
FYE 3/2022 37.4

Koa Kogyo Co., Ltd., Fukuyama Paper Co., Ltd. and PT. Tanjungenim Lestari Pulp and Paper are Marubeni’s subsidiaries.

Water Consumption Intensity in Processed Seafood Products

(Unit: ㎥/ton)

  Maruichi Suisan Co., Ltd.
FYE 3/2019 35.6
FYE 3/2020 34.6
FYE 3/2021 34.9
FYE 3/2022 34.3

Maruichi Suisan Co., Ltd. is Marubeni’s subsidiary.

Costs related to Water Management

Costs for water management in FYE 3/2022 are as follows:
・Costs associated with water-related risks: 3,900.8 million yen.
(These include maintenance and repair of water withdrawal and drainage systems and recycling treatment facilities, installation of water-saving equipment, purchase of water discharge treatment chemicals, emergency response training for scenarios assuming the outflow of hazardous substances, and implementation of cleanup activities in the areas surrounding water sources.)
・Investments in R&D to mitigate water-related risks: 5.0 million yen.
(These are R&D expenses for water risk aversion to maintain water quality, to ensure water quantity and to investigate the surrounding environment.)

  • 【The boundary of the environmental data】
  • Marubeni Corporation’s principal offices
    Until FYE 3/2019, we cover six main branches (Tokyo Head Office, Hokkaido Branch, Chubu Branch, Osaka Branch, Kyushu Branch, and Shizuoka Branch), but from FYE 3/2020, we cover five main branches (Tokyo Head Office, Hokkaido Branch, Chubu Branch, Osaka Branch, and Kyushu Branch).
  • Marubeni Corporation (excluding principal offices)
    Excluding Marubeni Corporation’s principal offices, we cover domestic branches and offices, other facilities such as Tama Center, overseas branches and offices, and overseas corporate subsidiaries including their branches and offices.
  • Domestic offices of Marubeni Corporation
    We cover Marubeni Corporation's principal offices, Tohoku Branch, Shizuoka Branch, Hamamatsu Branch, Hokuriku Branch, Chugoku Branch, Okinawa Branch, and Tama Center.
  • Consolidated subsidiaries
    The subsidiaries that are designated to be liquidated or sold are excluded.
    From FYE 3/2019, grain collection and exporting company based in the northern United States is included.
    From FYE 3/2020, GHG emissions, energy consumption, and water withdrawal figures and from FYE 3/2021, water discharge figures include agricultural material sales company based in the southeastern United States (waste generated does not include it).

Participation in International Initiatives

CDP-Water Security Program


CDP* (an international environmental non-profit organization) analyzes and assesses the collected information, and makes it available to investors. Marubeni has participated in the initiative of CDP since 2007.
Marubeni was selected by CDP as an A-list company in their water security program and certified as a leading company in corporate sustainability. Marubeni also received A- grades in the areas of climate change and forest protection on December 7, 2021. A total of 118 companies were selected out of approximately 3,400 companies that were evaluated, and Marubeni was recognized as a world leader in water security in terms of goal setting, initiatives, and information disclosure.

Repot for CDP-Water Security Program can be found here.

This year's CDP A-List and other published scores can be found here.

CDP (an international environmental non-profit organization formerly known as the Carbon Disclosure Project)
Founded in the United Kingdom in 2000, CDP has worked with approximately 590 investors representing over US$110 trillion in assets to pioneer environmental disclosure, greenhouse gas emissions reduction, water conservation, and forest protection for companies through capital markets and corporate procurement activities. In 2021, some 14,000 organizations worldwide, including some 13,000 companies representing more than 64% of global market capitalization and 1,100 municipalities, disclosed environmental information through CDP. CDP has the world's largest fully TCFD-compliant environmental database, and CDP scores are widely used to drive investment and procurement decisions to achieve a zero-carbon, sustainable and resilient economy. CDP is a partner in the Investor Agenda and a founding member of the Net Zero Asset Managers Initiative.

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