You must bring the water to a rolling boil and keep it there for at least one minute. While most bacteria and viruses die off within seconds of temperatures between 70°C and 85°C, protozoa with ...

or that putting it in room temperature water to come to a boil works just a well and means you don't have to stand around and ...

But there are other cases where high temperatures can kill germs — boiling water to kill off bacteria in food products, using a dishwasher to sterilize plates, or washing and drying clothes to ...