Seawater contaminated with radioactive substances that spilled out from Japan’s Fukushima Nuclear One power plant is spreading out.

The Tokyo Electric Power Company, which is the operator of the plant, said Wednesday that the level of iodine-131 was more than 80 times higher than government-set standards in seawater that was sampled eight kilometers from the plant.

The level of iodine-131 was 27 times higher in seawater sampled ten kilometers from the plant and 16 times higher in samples taken 16 kilometers from the plant.

Japan’s Nuclear Safety Commission ruled out the possibility of the contaminated waters affecting public health as it cited that fishing is not carried out in waters inside the 20-kilometer radius of the plant.

Meanwhile, amid fears such contamination will further expand, Japan’s Ministry of Education, Culture, Sports, Science and Technology plans to inspect for radioactive substances in waters 30 kilometers from the plant toward the direction of the Pacific Ocean and 70 kilometers north and south of the plant.