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Water Usage



Reduce water usage at all global production sites by 6% vs. FY2015 result as of FY2020*.

  • *Applies to production sites with high water risks as well.

Our Stance

As water usage increases worldwide due to economic development and population growth, there are growing global concerns over water risks. In order to effectively use limited water resources, the OMRON Group is committed to reducing its water withdrawals under its Environmental Vision Green OMRON 2020, with 29 out of 95 sites, or 31% sites setting water reduction management plans.

FY2020 Overview

Since fiscal 2014, the OMRON Group has kept track of water resource data based on CDP's water program. In fiscal 2017, the Group set environment-related social issues to address, together with the Group's identified sustainability issues and long-term goals. Accordingly, all of its production sites worldwide have been working to make more effective use of water resources.

In fiscal 2020, water withdrawals at all production sites worldwide was down 25.1% compared with fiscal 2015 as a result of their reduction efforts.

Amounts of Water Withdrawn and Discharged (Japan and Overseas)

Unit: 1,000m3
    FY2016 FY2017 FY2018 FY2019 FY2020
Japan Amount withdrawn 721 712 790 710 622
Amount discharged 598 607 661 623 552
Overseas Amount withdrawn 962 936 944 916 760
Amount discharged 827 791 797 773 657
Total Amount withdrawn 1,683 1,648 1,734 1,626 1,382
Amount discharged 1,425 1,398 1,458 1,396 1,209
Per unit of sales (1,000m3/one million yen) 0.0021 0.0019 0.0020 0.0022 0.0021

[Boundary] Global production sites from FY2014 to FY2017, and all global sites in and after FY2018

Yasu Office's Initiatives for Water Use Reduction

Yasu Office in Japan requires a large amount of water for the manufacturing of semiconductors, and utilizes groundwater as an intake source.
As groundwater is high in metal, salt, and other impurities, the office uses iron and manganese removal and ion-exchange equipment to filter the water.
As repeatedly used, filters accumulate dirt and require regular backwashing and cleaning.
The office previously discharged all of the treat water used for cleaning to third party destinations, but changed its water treatment process in order to reuse rather-clean treat water, except for the water used for early-stage cleaning. As a result, the office realized to cut groundwater withdrawals in fiscal 2020, down 5,121m3 from fiscal 2017 performance.

Initiatives to Recycle Water

In fiscal 2020, Yasu office recycled 163,000m3 of water, recycling discharged water with 3 methods as follows:

  • Collection and recycle of diluted wastewater
    Some discharged water from cleaning process in manufacturing is comparatively clean. Yasu office returns such water back to a manufacturing step ahead of the step that uses ultrapure water.
  • Discharge of water filtered by RO membrane
    Yasu office recycles discharged water filtered through Reverse Osmosis Membrane in manufacturing process that uses ultrapure water.
  • Recycle of discharged water from cleaning of iron and manganese removal equipment
    At Yasu office, water taken from a well is filtered at equipment for iron and manganese removal. The equipment is cleaned regularly, and the water used at the latter part of the cleaning process, which is rather clean, is recycled.

Addressing Water-related Risks

The OMRON Group assesses and identifies sites with water-related risks by using WRI's Aqueduct, one of the assessment tools accepted by CDP Water security program, together with a water risk analysis service provided by a risk management consulting company.

There are five sites with water-related risks: Dalian and Shanghai in China, Okayama in Japan, San Ramon, California in the United States and Bekasi in Indonesia, withdrawing 258,000m3 in total in fiscal 2020, making 19% of the Group's withdrawals. These sites have not yet received instructions from administrative authorities to reduce the amount of water withdrawals or to improve quality of discharged water. However, the sites are voluntarily working to preserve water resources, taking preparatory measures for business continuity.

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