TEPCO said the water would be released only after it has passed through a filtration system and is deemed safe.
Prime Minister Fumio Kishida said the release would start if weather conditions permitted.
“I have asked TEPCO to swiftly prepare for the water discharge in accordance with the plan approved by the Nuclear Regulation Authority,” he said.
“I promise that we will take on the entire responsibility of ensuring the fishing industry can continue to make their living, even if that will take decades.”
According to a Japanese official, the initial test results for seawater following the discharge could be accessible by early September.
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