Why would you want to ...

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Why would you want to disinfect raw water?  If you wanted to waste a lot of money you could use high intensity medium pressure UV. Why the aversion to chlorine---it really works except for crypto, and it's cheap. I did a recent study that found no change in bladder cancer rates in Canada and USA in the 40 years since THMs were regulated. Let me know if you want to read it.

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That chlorine and look-alikes are acceptable for Canada and the U.S. is a point well taken, while there have been no other inexpensive alternatives.  But for the developing world chlorine is not viable.  This is because, 1) In point-of-use treatment dosing is a problem, that either too much or not enough is used, and 2) In large scale treatment, this is not sustainable:  too expensive and not monitored and evaluated for the long periods necessary.  We need to talk about applications not only in the industrial world, but also in the developing world.

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