Performance Data

Water Risk

Water risk governance

Committee MHI Group Environment Committee
Risk management measures related to water risks In the Fourth MHI Group Environmental Targets (FY2018–FY2020), MHI also set consistent Groupwide reduction targets in relation to the effective use of water resources, and is currently undertaking Groupwide measures.
We have created an action plan to reduce water consumption and appropriately manage water resources through eachGroup subsidiary's environment-management program and similar measures. We monitor the progress of the effort by each subsidiary, using an IT system that allows for compilation and reporting of water-related data.
Water-risk Management in Water-stressed Regions MHI Group conducted a water-stress survey of production bases with high water intake in Japan and abroad using the Aqueduct Water Risk Atlas (ver. 3.0). Four of the surveyed facilities (17%) are in regions rated "high-risk" and above. Based on the survey results and analysis, we will identify high water-risk facilities, specify water risks, strengthen measures and raise the level of risk-management to best fit each facility.

Water risk management

Management of water quality Waste water is managed and treated in accordance with relevant laws and regulations. In fiscal 2019 we found no case of water-standard violations according to related laws.
Management of changes to laws, regulations, taxes, and water prices Domestically, once information on any regulation change or revision is obtained, we take appropriate action promptly as necessary. With regard to overseas factories belonging to Group companies, we are promoting the collection of data related to their water use.

Effort to address water risk through our products

Products contributing to the reduction of water use For example, desalination plants for converting sea water into plain water are often built in combination with power plants constructed in Saudi Arabia, where water resources are limited. Combining our products from a wide range of areas, MHI has been delivering solutions for issues pertaining to water resources.
Relaxation of water quality effects by using products We are contributing to alleviating the influence of water quality through environment-friendly thermal power generation systems, such as wastewater treatment of desulfurization equipment.

Water Usage

Reducing water usage

Reducing water usage Unit 2016 2017 2018 2019
Quantity of water intake ten thousand m3 903
(Note 1)
(Note 2)
(Note 3)
(Note 4)
Third-party Assurance (domestic) 775 683 666
(Note 5)
Under examination
Breakdown by Quantity of water intake
Tap water ten thousand m3 383 368 417 320
・Third-party Assurance (domestic) ten thousand m3 275 224 212
(Note 5)
Under examination
Industrial water ten thousand m3 344 307 303 315
・Third-party Assurance (domestic) ten thousand m3 329 284 286
(Note 5)
Under examination
Groundwater ten thousand m3 176 175 205 207
・Third-party Assurance (domestic) ten thousand m3 171 173 167
(Note 5)
Under examination
Reused water usage (Note 6) ten thousand m3 32 26 22 18
Ratio of recycled water usage
(Note 5)
% 7.8 6.7 6.0 5.0
Usage amount ten thousand m3 935
(Note 1)
(Note 2)
(Note 3)
(Note 4)
Unit water consumption (Note 7) 0.196 0.171 0.175 0.177
Unit reduction rate
(Compared with FY2014 levels)
% 5.2 17.3 15.4 14.4
Water discharge (Note6) ten thousand m3 403 1,027 1,048 794
  • 1Data is for MHI on a non-consolidated basis and 131 Group companies.
  • 2Data is for MHI on a non-consolidated basis and 156 Group companies.
  • 3Data is for MHI on a non-consolidated basis and 150 Group companies.
  • 4Data is for MHI on a non-consolidated basis and 142 Group companies. (Coverage: 94% of consolidated revenues)
  • 5Data is for MHI on a non-consolidated basis and 15 Group companies.
  • 6Data is for MHI on a non-consolidated basis.
  • 7Calculated as water usage per net sales.