Tokyo Electric Power Co (TEPCO) said Tuesday that between 200 and 500 tons of groundwater a day are flowing through wall cracks into the reactor buildings of the stricken Fukushima Daiichi nuclear power plant.

A TEPCO official told TBS that water inflow had increased after heavy rain. The official said the plant is currently decontaminating 1,000 tons of tainted water a day and that the increased amount of groundwater is manageable, TBS reported.

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