I've read about small doses of CS purifying drinking water, but not the 
particulars.
Hope someone can tell me the amount, and strength, of CS needed to purify 
treated drinking water.  As a furtherance of the question, how much is needed 
to purify water from an untreated source, such as a creek?

How can I tell whether the CS has actually worked - other than ingesting the 
water and seeing if I die?  Seriously, CS would be quite useful to campers and 
hikers if an assured
method were offered.

Thank you,

Steve Radcliff



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