They found cesium? Uh, oh that's not good.

I read the I 131 in the water has dropped to under 100 (it was 210 yesterday) and is safe for babies again.

I would think they could use ion exchange (chloride for iodide) to remove the iodine. I think a simple Brita filter would work; just store it for awhile in a thick walled plastic container once it's used. (Just like kitty litter after iodine treatment for hyperthyroid cats. It's the same isotope.)