Reports from Tokyo Electric Power Co. (TEPCO), operator of the disaster-stricken Fukushima Daiichi nuclear power plant, say that measurements of radioactive tritium in seawater – seeping out of the nuclear complex via groundwater into the sea – show levels at 4700 becquerels per liter, the highest tritium level in the measurement history. The highest tritium levels have come in the past 15 days, the same reports show.
