SepticSceptic: Have a rain water tank for the last 7 years, never cleaned, untreated and have had one dose of Giardia. It was the most painful bouts of guts ache I have ever had.
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Ahhhh... Giardia is definitely a consideration, and I think they warn you about on the DOC tracks. Our well water has a separate filtered feed for the house, but it is nothing fancy, and it does not reduce water pressure indoors (we have to wear a wetsuit in the shower to stop skin being blasted off!)
I am not sure if you can filter out Giadia, or if you have to boil or use nasty tasting chemicals, but this CDC page has some info.
http://www.cdc.gov/healthywater/drinking/private/wells/disease/giardia.html
Sure as hell glad I never fell foul of it from my tramping days!
Trusted
