My word, this is a surprise:
Many of their homes are inside the evacuation zone, with radiation 17 times higher than background levels and tap water too contaminated to drink.
17 times higher than background, eh?
As the excellent xkcd points out. General background level is 10 microsieverts a day. Extra radiation from being in one of the towns around the Fukushima plant is 3.5 microsieverts.
It\’s very difficult indeed to get to the 17 times background from there really.