Through the following links, you can move to the menu or to the main text in this page.

Conserving Water Resources

The OECD’s 2012 report entitled Environmental Outlook to 2050 states that during the period between 2000 and 2050, global demand for water will increase by approximately 55% owing to economic development and population increase, while more than 40% of the world’s population will be living in river basins that suffer from severe water shortages.
The Kubota Group sees conserving water resources as one of its materiality, and has been advancing initiatives to promote the effective utilization of water resources and to address water risks, such as the reduction of water consumption by promoting water saving and wastewater recycling, and the proper management of wastewater treatment and wastewater quality. Production sites promote measures not to cause adverse effects on local ecosystems and the lives of local residents, taking into consideration the status of water stress in the respective regions.

Activities towards achieving SDGs

Related SDGs and targets
Major Activity Content
  • Promotion of measures to reduce water resource waste and losses, focusing on JIT and automation
  • Water conservation measures, water leak inspections, introduction of wastewater regeneration equipment which applies our company’s technology
  • Thorough execution of appropriate wastewater management, risk management, etc.
2020 Activity Targets (KPIs)
  • Medium-Term Environmental Conservation Targets 2020:
    • Water usage intensity at global production sites: 10% improvement compared to the base year 2014

Medium-Term Environmental Conservation Targets 2020 and the Results for RY2019

Action item Management indicator* Scope Base RY Target for RY2020 Result of RY2019

Achievement Status

Conserve water resources Water consumption per unit of production Global production sites 2014 -10% -19.5% We are promoting recycling of wastewater and saving of water use.

* The figures per unit of production represent the intensity of the environmental load per unit of money amount of production. The exchange rate of the base year is used when translating the money amount of production of overseas sites into Japanese yen.

Water Consumption in the Business Sites

1. Water Consumption

In RY2019, water consumption was 4.59 million m3, a decrease of 5.9% compared to the previous reporting year. Additionally, water consumption per unit of sales was improved by 9.3% compared to the previous reporting year. These are mainly due to a reduction in water usage due to water-saving activities, the use of recycled water, and the efficiency improvement of cooling facilities at some production sites in Japan, as well as a reduction in production volume at cast iron production sites in Japan.

  • Trends in Total Water Consumption and Consumption per Unit of Sales

    • Water consumption per unit of consolidated net sales. The Kubota Group adopted International Financial Reporting Standards (IFRS) instead of accounting principles generally accepted in the United States of America from RY2018.
  • Water Consumption by Region

  • Water Consumption by Business

  • Water Consumption by Type

    • Japan

    • Overseas

2. Measures to Reduce Water Consumption

The Kubota Group has established its Medium-Term Environmental Conservation Targets, and is working on the reduction of water consumption at its business sites. Its production sites, such as those in China, Thailand, Indonesia and the United States, have introduced wastewater treatment facilities or wastewater recycling systems utilizing technologies of the Kubota Group.
In RY2019, we carried on with daily activities such as raising employees’ awareness of saving water and conducting patrols to check for water leakage. We also continued to install water-saving valves and introduce improved methods of watering green areas. Additionally, we worked to reduce the amount of water used for cleaning and cooling in production processes. As a result of the efforts toward achieving the Medium-Term Environmental Conservation Targets 2020 for water consumption reduction, global production sites achieved a reduction of 175,000 m3, in RY2019 compared with the case where countermeasures were not implemented from the base year (RY2014). The economic effects of these measures reached 45 million yen compared to RY2014. Water consumption per unit of production in RY2019 improved by 19.5% compared to RY2014.
We will continue to promote the reduction of water consumption through initiatives to promote the 3Rs of water, such as conducting water-saving activities and promoting water recycling by using the Kubota Group’s technologies.

  • Achieving zero emission of in-process wastewater

    Kubota Agricultural Machinery (Suzhou) Co., Ltd. (China): Reducing water consumption through the recycling of in-process wastewater

Controlling Wastewater

The Kubota Group has set its own control values that are stricter than the emission standards of relevant laws and regulations. To ensure that the standard values are not exceeded, the Kubota Group carries out regular measurement of designated monitoring items. We also implement thorough daily management activities, such as monitoring the trends in water quality data and inspecting the wastewater treatment facilities.
At our sites, continuing measures to restrict water consumption have resulted in reduced wastewater discharge. In RY2019, the amount of wastewater discharge was 4.77 million m3 (3.26 million m3 into public water areas, 1.51 million m3 into sewage lines), a decrease of 7.0% compared to the previous reporting year.
We will continue to reduce load on the local water environment through activities to manage water discharge and reduce water consumption.

  • The amount of wastewater discharge includes rain and spring water at some business sites.

Survey on Regional Water Stress

In order to identify the risks related to the use of water resources and find effective responses to such water risks, the Kubota Group conducts surveys concerning water stress*1 for all of its production sites.
The results of a survey on water stress of a total of 50 sites in 14 countries using Aqueduct*2 (water risk assessment tool developed by the World Resource Institute (WRI)) are as follows:

  • Results of the Survey on Water Stress of Production Sites (RY2019)

  • Water Consumption by Water Stress Level

The survey results showed that “High” or “High-Middle” levels of water stress applied to 9 production sites, located in the Chinese cities of Daqing and Suzhou, central Thailand, Saudi Arabia, Russia and Italy, which account for approximately 9% of the Group’s total water consumption. In the next “Middle” level category were 15 production sites situated in Japan’s Kanto region and Aichi Prefecture, Indonesia, coastal regions of Thailand, the southeast United States and a number of locations in Europe, which together account for approximately 45% of total water consumption. Production sites in the “Middle-Low”and “Low” categories accounted for approximately 46% of total water consumption.
Although the majority of the water used in the Kubota Group's production activities is sourced in areas with stress levels in the “Middle”or lower categories, the survey showed that some of the main sites in Thailand and China are located in areas of high water stress. At these production sites, the Kubota Group is now promoting the horizontal rollout of regional examples of good practise in areas including the reduction of water consumption and appropriate management of wastewater.
The Group will also conduct water stress surveys in each case for the water areas around new sites that are scheduled for construction as part of the Group’s more globally oriented business growth.

  1. *1.Water stress refers to the state where the annual water availability per capita is less than 1,700 tons and people feel inconvenience in their daily life. Water stress in this survey is the water stress for each river basin, which is calculated based on the ratio of water intake to the amount of available water resources. (World Resources Institute (WRI))
  2. *2.An update of the Aqueduct survey in August 2019 using a revised statistical model improved the accuracy of the water risk evaluation. As a result, the RY2019 water stress survey at Kubota Group production sites also showed major changes from the RY2018 results.