Radioactivity in water near the Fukushima Daiichi nuclear power plant has remained low and stable from 26 April to 9 May 2015, according to the regular update and sea area monitoring results provided by Japan's Nuclear Regulation Authority (NRA) to the IAEA.
Tokyo Electric Power Corporation (TEPCO) will soon also be providing significantly more of its radiation monitoring data online for easier analysis. How and when this data will be disclosed is outlined in this document.