I know that, like to hang or not hang your food, to treat or not to treat one's water is a controversial subject. I generally do not treat it on the AT in Georgia, but do in other places where there is more population, farm animals, sheep.
I am wondering if there is a compelling reason to treat in on the BMT in GSMNP?
(Full disclosure: I have never suffered from Giardia, so have no baseline bad experience!)
Thanks,
PapaG