Placing contaminated water in a clear plastic bottle and exposing it to the sun can kill infectious microbes in as little as three hours.

Name: Placing contaminated water in a clear plastic bottle and exposing it to the sun can kill infectious microbes in as little as three hours.
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This method, known as SODIS (Solar Water Disinfection), uses solar UV-A radiation and increased temperature to kill pathogens in contaminated water, making it safer to drink.

Placing Contaminated Water in a Clear Plastic Bottle and Exposing