So, I contacted my Japanese colleague, and this was her response. (verbatim, except with grammar and spelling corrected)
For post Tunami, there are two tendencies. One is vanished houses, and the other one is radioactivity.
For Tsunami ; I was in Ishinomaki (Miyagi-ken) Last week to do a seminar. And abound the seaside from Fukushima to Iwate (some of Ibaraki and Chiba too) there is still nothing. (I have attached photo from last week) Electricity and water are back in normal an all area (even without houses, we need traffic light and night light). They are taking away all houses. People who were living in temporary shelter have been moved to temporary build houses. (Or moved out of the prefecture) Otherwise other Tohoku town like Morioka and Sendai are normal and many sightseeing people around.
For Fukushima effect, it is NOT serious at all. Of course there is radioactivity around, and they are doing decontamination for kid’s school. But for adult people this is nothing. (as you know Japan is an overly anxious country. So, our level of radioactive scale is too sensitive). Your friend’s news about water was not the case….. Maybe in April there were one to two day news on Tokyo water supply meter measured bit of radioactive. But, we are Japanese. I think Yellow sand from China bring us more problem.
However, compare to KOBE earthquake, it will take longer and we had to pay many tax. (It is wide area and also many old people were living in the Tunami area. So, they ask everything to government, Can not stand alone…)
Anyway, if your friends are planning to come to Japan for Ski, please encourage them to do so.