This is a very simple and effective solution to clean drinking water:
Contaminated water is filled into transparent plastic bottles and exposed to full sunlight for six hours.
How to use sunlight in treating the contaminated water through two synergetic mechanisms:
Radiation in the spectrum of UV-A (wavelength 320-400nm) and increased water temperature.
If the water temperatures raises above 50°C, the disinfection process is three times faster.
In a survival situation, you are bound to come across discarded clear plastic bottles. This tip could come in handy. You should also carry other means to purify water for drinking.
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Yes they would work to. And you are right about the availability of discarded plastic bottles. Also, they are lighter in weight if you had to carry them in a bugout situation.
Would glass mason jars work, too? I don’t like the idea of heated plastic, but don’t know if there is a particular reason it is used in the example other than the discarded bottles would be easy to obtain.