[HIGHLIGHTS] ``PFAS'' groundwater survey conducted by the Tokyo metropolitan government with values ​​exceeding the national provisional target in 21 local governments

"PFAS" is a general term for organic fluorine compounds, and among these, "PFOS" and "PFOA" have been detected in high concentrations in rivers and tap water across Japan. The government has set a provisional target value of 50 nanograms per liter for water quality.

21 local governments, or about one-third of all local governments in Tokyo, have detected values ​​that exceed the country's provisional target values. Expert: "It is important to understand the actual situation and take measures"