Hitachi Construction Machinery


Effective Use of Water

In order to identify regions where there is a high-water stress level during business activities, the HCM Group uses the AQUEDUCT tool released by the World Resources Institute to quantify the water stress level at all their production facilities both domestic and international, and identify regions of high water stress.

Company General Waster Risk
Hitachi Construction Machinery Tsuchiura Works Medium to High Risk (2-3)
Hitachi Construction Machinery Kasumigaura Works Medium to High Risk (2-3)
Hitachi Construction Machinery Hitachinaka Works Low to Medium Risk (1-2)
Hitachi Construction Machinery Hitachinaka-Rinko Works Low to Medium Risk (1-2)
KCM Corporation Bansyu Works Medium to High Risk (2-3)
KCM Corporation Ryugasaki Works Medium to High Risk (2-3)
Hitachi Construction Machinery Tierra Low to Medium Risk (1-2)
Hitachi Construction Machinery Camino Medium to High Risk (2-3)
Hitachi Sumitomo Heavy Industries Construction Crane Medium to High Risk (2-3)
Tadakiko Medium to High Risk (2-3)
Niigata Material Low to Medium Risk (1-2)
Shin Tohoku Metal Low to Medium Risk (1-2)
Hitachi Construction Machinery (China) Low to Medium Risk (1-2)
Hefei Rijian Shearing Low to Medium Risk (1-2)
Tata Hitachi Construction Machinery Company Private Limited High Risk (3-4)
PT Hitachi Construction Machinery Indonesia High Risk (3-4)
Hitachi Construction Machinery (Europe) N.V. Low to Medium Risk (1-2)
Hitachi Construction Truck Manufacturing Ltd. Low to Medium Risk (1-2)

Advanced water-saving initiatives are being rolled out at the overseas locations Tata Hitachi Construction Machinery Company Private Limited and PT Hitachi Construction Machinery Indonesia, as well as the Japan-based Hitachi Construction Machinery Tierra near Lake Biwa, all of which have relatively high water risk.

THCM water pipes

Tata Hitachi Construction Machinery implemented countermeasures to remove unnecessary water pipes, in addition to implementing improvements to water pipes as a countermeasure against leakage. Also, through such water saving activities as optimization of the water quantity used in the watering of green areas, and the installation of auto-sensors onto toilets etc., water usage was reduced by 7% (7500m3) compared to the previous year.

HCMI water treatment

At HCM Indonesia, starting in FY2012, an RO (reverse osmotic membrane) water purification device was introduced, which stabilizes the coating quality by removing mineral deposits which obstruct the electro-deposition coating.
Also, they reuse water via a cyclical water treatment system.


Hitachi Construction Machinery Tierra upgraded their small-item painting equipment (water-circulating facilities) and refreshed their boilers (miniaturized equipment and pertinent installation) to reduce their environmental footprint, reducing their FY 2012 water usage by 20,000m3.Dealers are also continuing to reduce specific water consumption for production output by at least 70% (compared to FY 2005).

To contribute to the effective utilization of water resources, HCM Group is working to reduce the water usage which accompanies business activity.
In FY 2017, the entirety of HCM Group achieved a 43% (reference year 2005) improvement in basic units of water used, thanks to its water-saving measures such as the promotion of increasing the lifespan of the water used in painting facilities and expansion of the use of recycled water.
We will continue striving to expand the use of recycled water to put effort into energy conservation, lower water usage, and move towards our goals.
Bradken has been included in the results since FY 2018.

Trends in Water Usage Volume
 Types of water  Water intake volume (km³) Criterion, Method, Prerequisite, Other
Tap water 404 Measured values
Industrial water 73 Measured values
Underground water 830 Measured values, calculated values
Other 0

Total Range: All Domestic and Overseas Production Bases for Consolidation

In order to prevent water contamination, we have put in place independent standard values even more stringent than the pollution prevention agreement values set by national and local governments, and in addition to daily water quality inspections, we have installed automated measuring devices which can be regularly monitored, implemented a strict management structure, and maintain and manage the quality of waste water from operations.

Trends in Waste Water Volume
FY2016 FY2017 FY2018
BOD Emission 1.7t 3.1t 6.2t
COD Emission 2.6t 4.5t 6.6t

Total Range: All Domestic and Overseas Production Bases for Consolidation

Waste water destination types Waste water volume (km³) Water quality (incl. processing method) Criterion, Method, Prerequisite, Other
Rivers 417 Compliance with the legal drainage criteria of each country/local government, water purification at waste water processing plants. Measured values, calculated values
Sewers 778 Compliance with the legal sewage criteria of each country/local government Measured values, calculated values
Underground infiltration 466
Waste composition 0.7
Evaporation, etc. 2 Measured values
Other 0.3

Total Range: All Domestic and Overseas Production Bases for Consolidation

Trends in Recycled Water Volume

Ongoing Initiatives

In order to recycle water, we will directly support leakage measures and recycle rate improvements with a focus on companies with especially high levels of water usage.

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