It's very lucky for us and our planet that Tokyo Electric Power Co is so very ethical and trustworthy. NOT

The Japan Times states this:-

The utility said the rainwater was discharged from barriers at seven locations and contained strontium 90, which can cause bone cancer if ingested. The beta radiation given off by the strontium did not exceed the government’s limit of 30 becquerels per liter, it said.
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So we can all sleep safe again.....................