At an annual meeting of the International Atomic Energy Agency, one nuclear plant into the sea has been placed into orbit.
A total of 177 member nations will hold a five-day general conference in Vienna next week to discuss issues such as nuclear development by Iran and North Korea.
The Chinese representative referred to treated water from Tokyo Electric Power Company Holdings Inc.'s plant in Japan as 'nuclear-contaminated water' and reiterated the country's opposition to the discharge.
On the other side of the IAEA meeting, Takaichi said she felt Japan's water discharge had broad-based support. The first round of the water release was completed earlier this month.
She added that she had been able to confirm the understanding and support of the US and France at meetings with leaders of the two countries' nuclear regulatory bodies on the same day.
At the IAEA meeting, the Bulgarian Representative commended Japan's transparency and cooperation with the IAEA over water release, while representatives from Denmark and the Czech Republic also expressed support.
The representative of South Korea said the water discharge was a symptom of the country's economic collapse.
Earlier, IAEA Director-General Rafael Grossi said the watchdog conducts independent monitoring and evaluation of the water release.
But there was a lot of criticism about Russia's illegal occupation of the Zaporizhzhia nuclear power plant in southern Ukraine.
Thirty-four countries also, including Spain, which represented the European Union, made general debate speeches at the IAEA meeting Friday.
Member countries also approved the reappointment of Grossi, whose current four-year term as the head of the agency expires in December.