It's entirely safe, the only charts, etc I've read saying otherwise were unreliable at best. (Including quite a few that said there's radiation here, here and here but neglected to say how much in commonly used units of measurement.)
Didn't the US suddenly change it's safe dose levels when everyone started to use their geiger counters to try and measure what was floating over from Japan ?
It's just an anti-nuclear chest-beating piece, with people happily ignoring that nearly all of this comes down to TEPCO cutting safety far too much.
Not really, someone built plants that couldn't withstand a flood and stuck them next to the coast in a tsunami zone, that's more than skimping on the safety.
"The reactors for Units 1, 2, and 6 were supplied by General Electric, those for Units 3 and 5 by Toshiba, and Unit 4 by Hitachi. All six reactors were designed by General Electric. Architectural design for General Electric's units was done by Ebasco. All construction was done by Kajima."
Who are EBASCO ?
--The Electric Bond and Share Company was originally a holding company that sold securities of electric utilities. It was created by General Electric in 1905. The company was restructured after the Public Utility Holding Company Act of 1935. Later known as EBASCO Services, it provided engineering consulting and construction services. Among other projects EBASCO designed nuclear power plants. EBASCO was sold to Raytheon in 1993 and became part of a Raytheon subsidiary, United Engineers and Constructors.
Ebasco Services was one of major US Architect-Engineers, coordinated design of many Nuclear Power Plants both in USA and outside  including Fukushima Daiichi Nuclear Power Plant (units 1, 2 and 6).
And Kajima ?
--"Kajima Construction Corporation, Ltd. is a Japanese construction company. Founded in 1840, the company has its headquarters in Moto-Akasaka, Minato, Tokyo."
50 nuclear plants in Japan, all of them now shut down. That's now an economic problem to avoid an environmental one.