I notice various people opt for chlorine tabs. I've heard people say they like the flavor better than with iodine, but iodine only takes an hour at most, I believe, to do the job. The flavor is tolerable to me, if not as good as nice fresh mountain water. Years ago, they use to say to use 1 tablet, 2 if the water is really questionable, but now they just flat out say to use 2 tablets, which does taste bad. I still use 1 tablet. Maybe I should try chlorine though.
I have started drinking unpurified water more and more in recent years, at least at high altitudes. Strange how I have this feeling of fear when I do so! It shows how alienated we are from our connection to nature that we can fear simple water (or maybe that's just me Actually, it's kind of liberating to just say you're going to drink nature's bounty without processing it. But of course, there are too many places where human and livestock contamination IS a problem.