Cabinet spokesperson Lo Ping-cheng said the government had decided to make a "fair adjustment" to its ban, saying that with so many countries lifting restrictions, Taiwan had to follow suit.
The planned release of Fukushima's treated water, slated to begin in the spring of 2023, has been opposed by China and South Korea, as well as local fishing communities.
The Chinese and Russian governments voiced grave concerns on Friday over Japan's plan to release into the ocean treated radioactive water from the tsunami-
Both Koizumi and Kan were proponents of nuclear power generation while in office, but they have become prominent antinuclear voices in Japan since the 2011 Fukushima disaster.