Radioactivity in water near the Fukushima Daiichi nuclear power plant has remained low and stable from 5 July to 11 July 2015, according to the regular update and sea area monitoring results provided by Japan's Nuclear Regulation Authority (NRA) to the IAEA.
At the same time, information from TEPCO on the overflow of rainwater from Drainage K into the sea outside the port of Fukushima was circulated by Japan's Ministry of Foreign Affairs to consular missions and international organizations in Japan. The report confirms that, on the morning of 16 July, some of the rainwater overflowed into the sea outside the port due to heavy rain. The overflow tapered off as the rain stopped and while measurements of radioactivity rose temporarirly is sea water samples just outside Drainage K, levels outside the port conitnuesto remain low. TEPCO is continuing to monitor the situation and implementing current shifting work to the drainage channels.