Overview
- More than 800 nearby residents filed a public pollution mediation on Dec. 23 seeking health monitoring, data disclosure, and contamination countermeasures.
- The Osaka Prefectural Pollution Review Board confirmed it accepted the application the same day, in what organizers say is the first such corporate PFAS case in Japan.
- Groundwater around Daikin’s Yodogawa site has been reported at roughly 400 times the nation’s provisional PFOS/PFOA drinking-water target of 50 ng/L.
- A 2023 blood survey of 1,190 residents and former employees found over 30% above U.S. reference levels, and some former workers were diagnosed with interstitial lung disease.
- Daikin handled PFOA from the 1960s, produced it from the 1980s, and ended its use in 2012, while national rules still lack a blood-level benchmark and causality to specific diseases remains unsettled.