In the early days of the Fukushima nuclear crisis, we saw helicopters dumping sea water on the reactors and also saw that much of it drifted on the wind and did not hit the target. What a waste of time! Anti-nuke Hirose thought so:

Yoh:  Today many people saw water being sprayed on the reactors from the air and from the ground, but is this effective?

Hirose:  . . . If you want to cool a reactor down with water, you have to circulate the water inside and carry the heat away, otherwise it has no meaning. So the only solution is to reconnect the electricity.  Otherwise it’s like pouring water on lava.

Commenter CrisiMaven writes in a Q&A on his blog:

> Can you still use contaminated water for the following purposes (keep in mind, it is always a matter of how contaminated it all is!):

> – cleaning a garden path for example,

Yes, but may I suggest: only if the path would be less contaminated than before. But before you breathe contaminated dust from a contaminated path by all means use contaminated water to keep it in place! This is what is already done at Fukushima – they spray water not only for cooling purposes but also to keep the contaminated dust or radioactice debris wet and in place!