> I assume the iodine is about water treatment and not radiation?

If you live with-in 50 km of a nuclear power plant (e.g., southern Ontario), you are entitled to free iodine pills:

* https://www.preparetobesafe.ca

* https://www.cnsc-ccsn.gc.ca/eng/resources/educational-resour...

* https://www.torontocentralhealthline.ca/displayservice.aspx?...

* https://www.durham.ca/en/news/ki-tablets-available-for-all-a...