What is the minimum water temperature for wet hands in proper handwashing?

What is the minimum water temperature for wet hands in proper handwashing?

• A. 100 °F
• B. 90 °F
• C. 80 °F
• D. 110 °F

Answer: (A)

Warm water at a minimum of 100 °F is specified for wetting hands during proper handwashing. This temperature helps soap dissolve fats and oils and enables better mechanical removal of microbes when you scrub. Water cooler than 100 °F isn’t as effective for lifting grime, which can leave germs behind. Water hotter than necessary, around 110 °F or more, can irritate or scald the skin without adding cleaning benefit. So, 100 °F is the standard minimum because it balances effective cleaning with safety and comfort.

Warm water at a minimum of 100 °F is specified for wetting hands during proper handwashing. This temperature helps soap dissolve fats and oils and enables better mechanical removal of microbes when you scrub. Water cooler than 100 °F isn’t as effective for lifting grime, which can leave germs behind. Water hotter than necessary, around 110 °F or more, can irritate or scald the skin without adding cleaning benefit. So, 100 °F is the standard minimum because it balances effective cleaning with safety and comfort.