Is rain no longer potable?

[thesaltytar]

https://www.thedenverchannel.com/new...arth?_amp=true

My fiancee just shared this article with me, the contents of which I find equally concerning and depressing. I haven't done a deep dive in this topic yet but is this something that is widely known in the cruising community?

Is it really dangerous, and is this something we can effectively treat onboard with a filtration system (and chemical sanitization if needed)? Losing access to rainwater catchment strategies would have a large effect on our approaches to resource management.