Updated on September 18, 2026
In the event that an incident of soil or groundwater contamination is identified at a Sony site in a voluntary check or other assessment, remediation processes are implemented in compliance with pertinent local laws and ordinances. Incidents of soil and groundwater contamination resulting from operations have been confirmed at Sony Group sites, as shown below. In response, Sony has been remediating the contamination and submitting regular reports to authorities.
| Site | Date Contamination Confirmed | Substance(s) Detected | Cause | Response/Current Status |
|---|---|---|---|---|
| Sony Global Manufacturing & Operations Corporation's Inazawa Site (Japan) | June 2001 (Result of voluntary assessment) | Fluorine | Leak from crack in drainage pipe | The site has discontinued use of the equipment that caused the contamination and is remediating and monitoring groundwater. Analysis conducted in fiscal year 2025 found a groundwater concentration of 0.83 mg per liter. |
| Sony Group Corporation Atsugi Technology Center (Japan) |
March 2022 (Result of voluntary assessment) | Fluorine and its compounds | Leak from loose drainage pipe fitting | An administrative report indicated that the area presents no risk of health hazards, though soil and groundwater contamination exist on site in June 2022. Contaminated soil was removed from the site as of September 2022. Monitoring groundwater contamination is ongoing. |
| Sony Group Corporation Atsugi Technology Center (Japan) |
February 2023 (Investigation in accordance with the Soil Contamination Countermeasures Act) | Fluorine and its compounds | Assumed to be the result of past business activities | The administrative report in March 2023 indicated that the area presents no risk of health hazards, though there is soil contamination. Contaminated soil replacement was completed (with some exceptions) in January 2025. |
