Water Purification Tablets

[CharlesHarris]

[LAC]

[harrypalmer]

[LAC]

[CharlesHarris]

[Mortblanc]

Why do the UV rays kill the bugs in the bottle and not in the puddle?

[CharlesHarris]

MB,

Turbidity.

[Mortblanc]

At what ambient temperature does this stop working?

I suspect much of the effectiveness is due to the temperature of the water inside the bottles placed in the sun in Nigeria, New Deli or HoChi Minn City reaching over 140f-150f, the temps where most creepies die on their own.

Is it effective at 35-38f?

[CharlesHarris]

[Mortblanc]

So really it is the heat that is killing the microbes more than the UV actions.

35s to 35n with water to 50c for one hour counts out most of North America and Europe except in the absolute warmest days of mid summer.

This is absolutely not a method I would want to rely on in my region. I don't think I would rely on it anywhere unless I was short the three twigs or half cup of petrol in a can of sand it would take to boil the water.