Approx. 84,000 m3 of contaminated groundwater has been discharged to the Pacific from bypass wells

Related to this article.. Tritium density reached the highest level at 3 bypass wells [URL]


According to Tepco, 83,791 m3 of contaminated groundwater had been discharged to the Pacific from last May to this February.

Tepco is pumping up the groundwater from “bypass wells”. The pumped water is discharged to the sea as “uncontaminated” water.

However 150,000 Bq/m3 of Tritium is detected even from the weighted average sample of this February.

The monthly discharging volume was 1,202 m3 last May, however it went up to 8,255 m3 this February.


There is no exit strategy about this bypass water plan. Tepco can be discharging this level of contaminated groundwater until they complete decommissioning in decades.




Français :

Environ 84 000 m³ d’eaux souterraines radioactives ont été déversées dans le Pacifique à partir des puits de dérivation


Article lié : La radioactivité en tritium passe des records dans 3 puits de dérivation

Selon Tepco, 83 791 m³ d’eaux souterraines extrêmement radioactives ont été déversés en mer entre mai et février dernier.
Tepco pompe les eaux souterraines par ses “puits de dérivation”. Les eaux pompées sont déversées en mer en tant que “eaux non contaminées”.
Néanmoins, on relève 150 000 Bq/m³ de tritium même dans l’échantillon-moyenne de février.
Le volume déversé mensuellement a été de 1 202 m³ en mai dernier, ils sont cependant passés à 8 255 m³ en février.

Il n’y a pas de stratégie de sortie sur le plan des eaux de la dérivation. Tepco peut très bien continuer à déverser des eaux souterraines d’un tel niveau de radioactivité jusqu’à la fin du démantèlement, dans des décennies.

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.


April 2015