Does tap/sink and washing machine water ever get hot enough to kill?
For bacteria to actually die, the hot water would have to be at a temperature above what your skin could tolerate. Most people can tolerate a temperature of 110 degrees for little bits of time, but that’s the most we can do. To kill bacteria with hot water alone is not feasible when you are handwashing items. However, hot water, is necessary to get rid of bacteria. Hot water and detergent together attack oils and grime. That oil and grime that you rinse away with the water contains bacteria. Without hot water, detergent is unable to be as effective. You may end up with an oily residue on your dishes or clothes. Hot water also makes dishes able to air dry on their own very quickly. You can do your own experiment to watch this in action. Take two dinner plates. Rinse one in cool or even warm water. Rinse the other in very hot water. Set the plates down and watch them dry. You’ll be able to see the hot water plate dry right before your eyes. But why do we care about dishes drying quickly?
