TEPCO says contaminated water may overflow Tokyo Electric Power Company says that, in a worst case scenario, highly radioactive water may overflow from the Fukushima Daiichi nuclear plant as early as June 20th. The company is set to start operating filters for highly radioactive water from June 15th. However, it warns that if the filtering does not go to plan, highly radioactive water may overflow from a tunnel at the Number 2 reactor. TEPCO says that by May 31st, 105,100 tons of waste water had accumulated. It contains an estimated 720,000 terabecquerels of radioactive substances. Tera stands for one trillion....