Message fromthe President & CEO

Sustainability Management

Environment

SocialGovernance

Disclosure Based on
the TCFD Recommendations

ESG Data

Conservation of Water Resources

Targetl 6.4

Basic Approach

Progress in FY2023
 Mitsubishi Motors (Thailand) Co., Ltd. (MMTh) has
begun recycling condensate from air conditioners
used at painting facilities.
 We installed a manhole-type oil-water separator at
the Kyoto Plant–Kyoto.
<Related pages>
P12 MITSUBISHI MOTORS’ Materiality
P15, P17 Materiality
P26 Environmental Management
P118 Environmental Data Related to Products andBusiness ActivitiesWEB Atmosphere/Wastewater Quality/PRTR-designatedPollutants Data (FY2022 Results)
https://www.mitsubishi-motors.com/en/sustainability/esg/
factory_archive2023.html

Due to the increasing population and changes in thenatural environment caused by climate change, water supply and demand are becoming tighter in moreregions, and social concern for the preservation ofwater resources are increasing.
MITSUBISHI MOTORS requires a large amount ofindustrial water, city water, and groundwater, etc., forthe automobile production process and discharge ofwater into sewage lines and rivers, etc. In regions wherewater risk is high, it is essential to consider the impactthat water withdrawal and discharge from our businessactivities have on the surrounding environment.
At each plant, we comply with various legal requirements, such as the one on the quality of discharged water. In addition, we work to reduce water
withdrawal amounts and introduce water recycling
technologies based on the status of water resource
management in individual countries and regions.

Water is required for the operations of our business
partners. We are aware of the importance of water risk
management throughout the entire value chain.

Reduction of Water Withdrawal Volume
We are striving to reduce water withdrawal volumes
by reusing washing water used in production processes for pre-washing and by circulating coolingwater and temperature control water.
At the Okazaki Plant and at PT Mitsubishi Motors
Krama Yudha Indonesia (MMKI), we have set up rainwater storage tanks in order to reuse rainwater.
At the Okazaki Plant, we have also set up equipment to filter groundwater so that it can be used tosupply drinking water to employees and those wholive nearby, in case any disasters occur.
Data (p. 120): Withdrawn water volume

Water Withdrawal Source and Drainage of Each Plant
Plant
Okazaki Plant(Okazaki, Aichi Pref.)Water Withdrawal
Drainage
SourceYahagi River
Kanda River
Tributary →Kanori River
Lake Biwa
Sewage line

Kyoto Plant –Kyoto(Kyoto, Kyoto Pref.)Kyoto Plant –Shiga
Lake Biwa(Konan, Shiga Pref.)Mizushima Plant
Takahashi River(Kurashiki, Okayama Pref.)Mitsubishi Motors
Nong Pla Lai(Thailand) Co., Ltd. (MMTh) Reservoir, etc.
PT Mitsubishi Motors Krama Lake Jatiluhur
Yudha Indonesia (MMKI)
MITSUBISHI MOTORS CORPORATION Sustainability Report 2024

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52▶ NextSewage line
HakkenRiver →Mizushima
Port
Sewage line

Rainwater storage tanks(Okazaki Plant)

Groundwater membrane
filtration equipment(Okazaki Plant)

Sewage line
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Message fromthe President & CEO

Sustainability Management

Environment

SocialGovernance

Disclosure Based on
the TCFD Recommendations

ESG Data

Targetl 6.4

TOPICS

Reuse of Discharged Water

Recycling Condensate from Air Conditioners
Used at Painting Facilities (MMTh)
Mitsubishi Motors (Thailand) Co., Ltd. (MMTh) has
begun recycling condensate from air conditioners
used at its vehicle painting facilities.
The Thai environment is hot and humid
throughout the year, so condensate is steadily
obtained from the dehumidification process of
air conditioners. This condensate is collected in awater storage tank and reused as part of the watersupply to the cooling tower for the chillers, thereby
reducing the water supply to the cooling tower by
about 30%, or 100 m3/day. Furthermore, utilizing
low-temperature (approx. 23°C) condensate helps
to improve cooling towers’ cooling efficiency.
Paintingfacility air
conditioner

Cooling
tower

Supply water
Water volume:
300m3/day
Water temperature:30°C

Condensate
Water volume: 100m3/day
Water temperature: 23°C
Water supply from tank
Equivalent to about 30%
of supply water
Condensate

Water storagetank

Overview of condensate recycling

Installed condensate water
storage tank
MITSUBISHI MOTORS CORPORATION Sustainability Report 2024

The MITSUBISHI MOTORS Group has introduced
wastewater recycling technologies, taking into consideration the situation regarding water resource
management at each facility location. Currently, discharged water recycling plants are operational at PT
Mitsubishi Motors Krama Yudha Indonesia (MMKI) and
Mitsubishi Motors (Thailand) Co., Ltd. (MMTh).
MMKI has been utilizing a water recycling plantsince its establishment in 2017. In FY2023, its wastewater recycling rate reached 67%.
In addition, in January 2022 MMTh began operating its first discharged water recycling plant, in conjunction with the startof operations of a newpaint plant. In FY2023,
the wastewater recycling rate rose was 84%.
Data (p. 120): Withdrawnwater volume

Wastewater recycling plant (MMTh)Prevention of Water Pollution
To prevent water pollution in areas surrounding plants,
we measure and manage the quality of discharged
water based on legal requirements. We also conduct
surveys and confirmations regarding the quality ofgroundwater and soil pollution. In this way, we confirm
that no toxic substances are being discharged to theoutside area. In order to quickly detect abnormalities indischarge water quality due to such factors as rainfall,
we set up a surface oil detector* in front of outlets
leading from the plant to public water and continuously monitor discharge water conditions. We carry out
continuous monitoring so that water discharged fromBack ◀

53▶ Nextthe plant does not affect the environment outside thesite. In the event of an accident, we respond quickly toprevent pollution from spreading, report to the local
authorities and disclose information to the community.
* Detects the presence of oil by capturing changes in reflectanceas the reflectance of oil is greater than that of water

Observation well (Okazaki Plant)

Surface oil detector (Okazaki Plant)

TOPICS

Installation of a Manhole-Type Oil-Water
Separator (Kyoto Plant)
At Kyoto Plant–Kyoto, we installed a manhole-typeoil-water separator in front of the oil film detector as
an enhanced measure to prevent the leakage of pollutants from road surfaces within the plant.
Oil film detectors have traditionally been used tomonitor oil leakage from stormwater outlets at factories. However, after referring a “Non-Specified Pollution
Source Countermeasures” case study of measuresused for busy roads, factories, and commercial facilities, we installed a new
manhole-type oil-water
separator in front of theoil film detector in therainwater drainage path.
This allows for the separation and discharge ofsuspended solids and oil
Manhole-type oil-water sepfrom road surface drainarator installed in the storm
age during wet weather.
drainage path
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