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 are taking 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 facilities in Japan are as shown in the table below. The NOx emissions from non-Japanese production facilities in fiscal 2023 amounted to 8 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

(Unit: Tons)
SubstanceFiscal 2019Fiscal 2020Fiscal 2021Fiscal 2022Fiscal 2023independent limited assurance

VOC: Production sites and R&D sites in Japan
NOx: All business facilities in Japan

VOC emissions are tabulated based on 100 different VOCs as indicated in a notice issued by the Ministry of the Environment.*
Major substances subject to tabulation include isopropyl alcohol and ethanol.
*See Schedule 1 of “Concerning the Enforcement of the Act to Partially Amend the Air Pollution Control Act (Notice)” (June 17, 2005, EMB Daihatsu No. 050617001)

NOx emissions from production sites outside of Japan are not covered by the independent assurance because exhaust gas measurement methods differ from country to country.


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 was 7 tons, a 20% reduction from the previous fiscal year. Outside Japan, the COD in fiscal 2023 was 32 tons, an increase of 7% 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.

Changes in BOD Load 

(Unit: Tons)
SubstanceFiscal 2019Fiscal 2020Fiscal 2021Fiscal 2022Fiscal 2023independent limited assurance
Drainage into rivers78865
Drainage into sewerage system11132

Target: Production sites and R&D sites in Japan

Changes in Drainage Volume

(Unit: thousand m³)
DestinationFiscal 2019Fiscal 2020Fiscal 2021Fiscal 2022Fiscal 2023independent limited assurance
Drainage volume7,0617,0386,8106,2986,019
Drainage into rivers6,8366,8356,6106,1085,834
Drainage into sewerage system225203200190185

Target: All business facilities in Japan