Hot Water Exposure Time To Receive A Severe Burn
Celsius Temperature Fahrenheit Temperature 2nd Degree Burn No Irreversible Damage 3rd Degree Burn Full Thickness Injury
45° 113° 2 hours 3 hours
47° 116.6° 20 minutes 45 minutes
48° 118.4° 15 minutes 20 minutes
*49° *120° 8 minutes 10 minutes
51° 124° 2 minutes 4.2 minutes
55° 131° 17 seconds 30 seconds
60° 140° 3 seconds 5 seconds

The above table shows that a person will receive a second degree burn in 3 seconds of exposure and a third degree burn in 5 seconds of exposure to water of 140°.

*The American Journal of Public Health prefers a maximum temperature of 120° for hot water.

The Consumer Product Safety Commission and the plumbing industry have published a voluntary standard which states that the maximum allowable temperature at the water outlet to the bathing area should be 120°.

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