Initiatives for Preventing Pollution

Astellas promotes activities to prevent global environmental pollution. For major environmental management indicators for air and water quality, we have set and managed stricter voluntary control values than the values stipulated by laws and regulations and agreed values. In addition, we are promoting voluntary activities to reduce atmospheric emissions of chemical substances.

Air Pollution

Reduction of VOC Emissions

Astellas sets voluntary numerical targets for reducing the amount of volatile organic compounds (VOCs) that are emitted accompanying the use of solvents in production and research activities, and makes efforts to reduce emissions. Moreover, as a measure to prevent environmental pollution by chemical substances as well as occupational illnesses, we have taken steps to minimize the impact of our business operations on our employees, local communities, and the environment, such as development of new manufacturing processes that do not use highly hazardous chemical substances.

Reduction of NOx Emissions

To reduce the emission of NOx into the atmosphere, Astellas has installed boilers that use gaseous fuels (city gas, LNG, and LPG). The NOx emissions from all business sites in Japan are as shown in the table below. The NOx emissions from non-Japanese production sites in fiscal 2021 amounted to 6 tons.
Astellas does not use any equipment that runs on fuel oil, which is a major source of SOx (sulfur oxide) emission.

Changes in Emissions Volume independent limited assurance

(Unit: Tons)
Substance Fiscal 2017 Fiscal 2018 Fiscal 2019 Fiscal 2020 Fiscal 2021
VOC 34 44 28 22 21
NOx 21 21 16 21 17

VOC: all production facilities and R&D sites in Japan
NOx: all business facilities in Japan (excluding sales offices)
There was an error in the application of the basic data used for the calculation, and corrections were made retroactively to FY2017 (correction range is 3% on average).

 

Water Pollution

Astellas measures the extent of its impact on aquatic environments using the biochemical oxygen demand (BOD) load as an index in Japan and the chemical oxygen demand (COD) load as an index in other countries, and makes the data available to the public. In Japan, the BOD load in fiscal 2021 was 9 tons, on a par with the previous fiscal year. Outside Japan, the COD in fiscal 2021 was 29 tons, slightly down from the previous year.

Since the discharge into water of chemical substances used in manufacturing processes can have a negative impact on ecosystems, we are examining ways of reducing such discharges as much as possible at all stages from R&D onward. With respect to future drug candidate substances discovered and developed by Astellas, we are examining the impact pharmaceuticals would have on ecosystems through the evaluation of their biodegradability in the natural environment. In addition, from fiscal 2015 we evaluated our wastewater management method by using bioassays targeting business facilities that were releasing wastewater into rivers after treatment. We confirmed that they are now less likely to have a significant impact on the ecosystem.

Changes in BOD Load independent limited assurance

(Unit: Tons)
Substance Fiscal 2017 Fiscal 2018 Fiscal 2019 Fiscal 2020 Fiscal 2021
BOD 12 10 8 9 9
Drainage into rivers 9 8 7 8 8
Drainage into sewerage system 3 2 1 1 1

Target: all production facilities and R&D sites in Japan
 

Changes in Drainage Volume independent limited assurance

(Unit: 1,000 m3)
Destination Fiscal 2017 Fiscal 2018 Fiscal 2019 Fiscal 2020 Fiscal 2021
Drainage volume 8,293 8,058 7,061 7,038 6,810
Drainage into rivers 8,066 7,820 6,836 6,835 6,610
Drainage into sewerage system 227 238 225 203 200

Target: all business facilities in Japan (excluding sales offices)