SODIS

Get an empty, clear plastic water bottle. Tear off a label and fill it with water from a creek, puddle, or standpipe (as long as the water isn’t too muddled) and lay the bottle on a piece of metal underneath the full sun. Wait six hours. The UVA rays over the six hours will disinfect the water, killing any viruses, bacteria or parasites. Thus, making the water safe to drink. This process is called SODIS and is used globally to provide drinking water for approximately four million people.

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