The samples were taken from 11/15/2011 ~ 12/15/2011.
As a result, tritium was measured at 44 places where they measured it at 29 locations in 2002.
Also, highest readings were much higher than 2002 like the graph below.
However, Fukushima nuclear disaster headquarter states still these 3 highest readins are lower than the maximum of 2000 ~ 2011 in all over Japan, so it is not a problem (River : ~1.7 Bq/L, Lake/Dam : ~3 Bq/L, Clean water : 2.1 Bq/L) though no detailed data is given.
Especially they measured tritium from the rivers in Iwaki city, where they didn’t measure it in 2002.
The detectable amount was 0.35 Bq/L. Cesium 134/137 were not measured supposedly.
No explanation is given why they took 6 months to publish this data.
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.