Most of the material isn’t readily water soluble and a lot of the radiation is alpha particles which aren’t very dangerous. The really dangerous stuff has a hal

Most of the material isn’t readily water soluble and a lot of the radiation is alpha particles which aren’t very dangerous. The really dangerous stuff has a half life on the order of minutes/days/months. It’s also hard to breath in the particles unless they’re attached to something like smoke. Uranium miners in the 50s who didn’t smoke had cancer rates no higher than the general population.