Handwashing: Cool Water as Effective as Hot for Removing Germs - New study indicates that washing for 10 seconds eliminates harmful bacteria. This study may have significant implications towards water energy, since using cold water saves more energy than warm or hot water.

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Handwashing: Cool Water as Effective as Hot for Removing Germs - New study indicates that washing for 10 seconds eliminates harmful bacteria. This study may have significant implications towards water energy, since using cold water saves more energy than warm or hot water.