Xinhua News Agency, Beijing, August 21 (Xinhua) -- A recent study in Japan has revealed the presence of per- and polyfluoroalkyl substances (PFAS) in sludge from 34 sewage treatment plants. Media reports suggest this further confirms that these chemicals may have spread throughout Japan.
Japanese media reported on the 20th that researchers from Kyoto University analyzed sludge from 34 of the approximately 2,200 sewage treatment plants nationwide. These plants are located across Japan, from Hokkaido in the north to Okinawa Prefecture in the south. The results showed that PFAS were present in the sludge from all 34 plants.
PFAS are difficult to degrade and accumulate in the environment and human bodies, earning them the nickname "permanent chemicals." The researchers noted that this finding suggests these substances may be widespread in wastewater sludge across Japan. They hope the Japanese government will establish regulations on the amount of PFAS in wastewater sludge based on their research.
Since 2023, excessive levels of per- and polyfluoroalkyl substances (PFAS) in water bodies have been reported in Okinawa Prefecture, Osaka Prefecture, and Tokyo, Japan, leading to abnormal blood test results for nearby residents. Because most of the affected areas are located near US military bases and Japan Self-Defense Force bases, these bases are considered possible sources of contamination.
Several Japanese civic groups have repeatedly requested access to US military bases to investigate the pollution, but the issue remains unresolved. On the 12th of this month, a civic group in Okinawa Prefecture again submitted a request for an investigation into suspected pollution of the surrounding waters at the US military base in Futenma.
