Tainted water seeps from Fukushima Daiichi plant , plant owner discloses . Scientists have been talking about the problem for more than a year . ` ` This is an extremely serious problem we must tackle , '' TEPCO says . But the water ` ` is not a sustainable solution , '' U.S. Steel says .
Tainted water seeps from Fukushima Daiichi plant , plant owner discloses . Scientists have been warning about the problem for more than a year . `` This is an extremely serious issue we must tackle , '' TEPCO says . Storing the water `` is not a sustainable solution , '' U.S. engineer says .