Is it harmful to boil hot water for cooking?

No, it is not considered harmful to boil water for cooking. Boiling water is a safe and recommended way to kill harmful microorganisms and bacteria that may be present in the water. When water reaches boiling point (212 degrees Fahrenheit or 100 degrees Celsius), it effectively disinfects the water by killing most microorganisms. This process makes the water safe for drinking, cooking, and other consumption purposes.