I-131 still detected from two sewage plants in Tokyo this December

On 12/25/2015, Bureau of Sewerage Tokyo Metropolitan Government announced they detected Iodine-131 at 2 sewage plants in Tokyo.


The sample is incineration ash of sewage sludge. The sewage plants are located in Tama area (Akishima city and Hachiouji city). The samples were collected from 12/2 ~ 12/15/2015.

The measured density was 21 ~ 25 Bq/Kg. In Edogawa ward, 1,450 Bq/Kg of Cs-134/137 was also detected. Cs-134 density was 250 Bq/Kg to prove it came from Fukushima plant.

In the plant of Akishima city, 20 Bq/Kg of I-131 was detected in November too.







Français :

On relevait toujours de l’iode 131 dans deux stations d’épuration de Tokyo en décembre dernier


Le 25 décembre 2015, le “Bureau of Sewerage Tokyo Metropolitan Government” (= Bureau de l’Épuration de la Métropole de Tokyo) a déclaré qu’ils relevaient de l’iode  131 dans 2 stations d’épuration de Tokyo.

Les stations sont situées dans la région de Tama (communes d’Akishima et Hachiouji). Les échantillons sont des cendres d’incinération des boues d’épuration. Ils ont été collectés entre le 2 et le 15 décembre 2015.
Les radioactivités relevées s’étalent de 21 à 25 Bq/kg. Ils ont aussi relevé 1450 Bq/kg de Cs 134/137. La présence de césium 134 radioactif à 250 Bq/kg démontre qu’il provient de la centrale de Fukushima.
Ils avaient également relevé 20 Bq/kg d’iode 131 dans la station d’épuration d’Akishima en novembre.


About this site

This website updates the latest news about the Fukushima nuclear plant and also archives the past news from 2011. Because it's always updated and added live, articles, categories and the tags are not necessarily fitted in the latest format.
I am the writer of this website. About page remains in 2014. This is because my memory about 311 was clearer than now, 2023, and I think it can have a historical value. Now I'm living in Romania with 3 cats as an independent data scientist.
Actually, nothing has progressed in the plant since 2011. We still don't even know what is going on inside. They must keep cooling the crippled reactors by water, but additionally groundwater keeps flowing into the reactor buildings from the broken parts. This is why highly contaminated water is always produced more than it can circulate. Tepco is planning to officially discharge this water to the Pacific but Tritium is still remaining in it. They dilute this with seawater so that it is legally safe, but scientifically the same amount of radioactive tritium is contained. They say it is safe to discharge, but none of them have drunk it.


January 2016