They've been dumping 100's of tons of water through these reactors since the meltdowns. Isn't there just the tiniest clue, in the massive quantities of 1+ Sv r

They've been dumping 100's of tons of water through these reactors since the meltdowns. Isn't there just the tiniest clue, in the massive quantities of 1+ Sv radiation from the water, that some of the materials have been washed out of the reactor? Isn't there just the tiniest clue in the fact that the basements are full of water, that the RPV and containment are holed?