When hand-washing dishes, it seems commonplace to wash dishes in hot water.
This LifeHacker article about washing your hands in hot water versus cold water points out that:
It's certainly true that heat kills bacteria, but if you were going to use hot water to kill them it would have to be way too hot for you to tolerate
But sometimes when hand washing dishes the water can be uncomfortably hot (i.e. you wouldn't put bare skin under it for extended periods of time and consider that gloves are sometimes worn) -- hotter than what would be discussed in the article.
Also consider this Housekeeping About.com article in which it asserts claims about using hot water:
- Hot water actually helps to lift away and clean dirty dishes
Killing Bacteria and Microorganisms
- Hot water is needed to effectively kill bacteria on dishes
Water temperatures under about 90 degrees will leave a nasty greasy film on your dishes
Grease cutting ability is severely hampered by cool water
- Hot water dries much more quickly on dishes than warm or cool water
Dishes will dry spot and streak free with hotter water
However, these all seem to be claims that can be easily assumed. Since most people use warm-to-hot water they would assume it is the reason the dishes are spot free or rinse off easy. Reading the article leaves me asking "why?", how?" and "but wait I just saw a source saying the water isn't hot enough to kill bacteria and microorganisms?".
There are no sources for the information either, and the fact it is About.com leaves me skeptical.
What, if any, benefits are there of hand washing dishes in hot water? What about drawbacks?