I mean.. in both cases you would have to wait for the radiation to dissipate. Have people remain indoors and wait a few days for the cloud to pass. In the case

I mean.. in both cases you would have to wait for the radiation to dissipate. Have people remain indoors and wait a few days for the cloud to pass. In the case of contamination of a water source, you would want to filter the water before drinking until the radioactive fallout burns itself out. Plus water is exceptionally good at stopping radiation so a nuclear accident into a body of water is like the best case scenario. Nuclear radiation isn’t a boogeyman, and isn’t the most dangerous type of contamination by a long shot. I would be way more worried about a chemical spill or a industrial accident that released toxic gas.