China did not immediately comment.
The step is based on an agreement between the two nations that Beijing was to take steps toward ending the ban by joining water sampling missions as part of the International Atomic Energy Agency (IAEA).
The Fukushima Daiichi plant was damaged in the 2011 earthquake and tsunami, triggering meltdowns in its three reactors and causing large amounts of radioactive water to accumulate.
The wastewater was treated and heavily diluted to reduce the radioactivity as much as possible before Japan began discharging the wastewater in August 2023.
Japan says the discharge met international safety standards and data from the IAEA monitoring are publicly available.
China blocked imports of Japanese seafood because it said the release would endanger the fishing industry and coastal communities in eastern China. (AP) ARI