posted on Mar, 22 2009 @ 08:25 AM
They already put chlorine dioxide in the drinking water to purify it.
But if you really want to go adding extra then most camping purification tablets use a chlorine compound of some kind.
They won't make you go bald or give you webbed feet, they are perfectly safe in the correct doses, but don't taste very nice.
As I say though, if you already have access to tap water then you won't need it.