The public must help fund Tokyo Electric Power Co.'s effort to freeze the soil around the reactor buildings at its Fukushima No. 1 nuclear plant, creating a barrier to prevent more groundwater from becoming radioactive, Chief Cabinet Secretary Yoshihide Suga said Wednesday.

It was revealed the same day that 300 tons of tainted water is flowing to the Pacific daily from the stricken plant.

"There is no precedent in the world to create a water-shielding wall with frozen soil on such a large scale (as planned now at the Fukushima complex). To build that, I think the state has to move a step further to support its realization," Suga told reporters.