According to news from the Japan Broadcasting Association on June 27, local time, the Ministry of the Environment of Japan stated that it has conducted a survey on the water quality of rivers and groundwater across the country. The results show that 21 locations in 12 prefectures have exceeded the standard of organic fluoride, and nearby residents need to be reminded not to Drink groundwater in the relevant area.Organic fluorine compounds “PFOS” and “PFOA” are often used in the manufacture of foam fire extinguishing agents. Because they are harmful to humans, countries all over the world, including Japan, are restricting the production and use of these compounds.
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The Ministry of the Environment of Japan started to survey the water quality of rivers and groundwater nationwide since last year. The results of the survey of 143 locations showed that the organic fluoride in rivers and groundwater of 21 locations in 12 prefectures exceeded the standard.
Under the Japanese Interim Standard, organic fluoride is required to not exceed 50 ng per liter of water. However, the organic fluoride content of groundwater in Osaka City is 5,500 ng per liter, which is 110 times the interim standard and the highest concentration among locations that exceed the standard.
In addition, the organic fluoride content in groundwater in Ayase City, Kanagawa Prefecture is 1,300 ng per liter, and the organic fluoride content in spring water in Kadena Town, Okinawa Prefecture is 1,100 ng per liter. Although the two water sources are not used as drinking water, the Ministry of the Environment reminds nearby residents not to drink.
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