For washing dishes, the water should ideally be hot enough to effectively remove grease, food residues, and bacteria, but not so hot that it poses a safety risk to you. The recommended temperature for washing dishes by hand is generally between 110°F to 120°F (43°C to 49°C).
Here are some important points to consider:
Effectiveness: Hot water helps to dissolve and remove grease and food particles more efficiently than cold water, making the cleaning process more effective.
Bacteria and Germs: Water at temperatures above 140°F (60°C) can help kill bacteria and germs on dishes, but this temperature might be too hot for prolonged contact with your skin.
Safety: You should always prioritize your safety. Water above 120°F (49°C) can cause burns, especially for prolonged exposure or if you have sensitive skin. Always use caution when dealing with hot water.
Energy Efficiency: Using extremely hot water may also waste energy. It's best to find a balance between temperature and efficiency when washing dishes.
To ensure safe and effective dishwashing:
- You can use a thermometer to measure the water temperature and adjust it accordingly.
- Many dishwashing detergents are designed to work well in warm water, so you don't necessarily need scalding hot water for effective cleaning.
- If you have a dishwasher, most modern dishwashers have built-in heating elements that raise the water temperature to the appropriate level for effective cleaning and sanitation.
Overall, using comfortably warm water (around 110°F to 120°F) is generally sufficient for most dishwashing needs while maintaining safety.