A three-compartment sink isn’t just a fancy kitchen sink, it’s a must-have for all the food establishments like restaurants, cafes, and hotels.
With three separate sections for washing, rinsing, and sanitizing, it ensures that dishes, utensils, and other cookware are cleaned to perfection.
But, very often a common question is always asked: Water In The Wash Sink Of A Three-Compartment Sink Must Be At Least What Temperature?
- 100°F (38°C)
- 90°F (32°C)
- 120°F (49°C)
- 110°F (43°C)
And, the answer is: 110°F (43°C)
Using these 3-compartment sinks isn’t as simple as we usually found in our home. The kitchen staff is taught to follow strict rules, and one of those rules includes maintaining the right water temperature in the wash sink of 3 compartment sink.
Using the right temperature is necessary, it ensures effective cleaning. Moreover, this is to prevent foodborne diseases, kill harmful bacteria, and also an FDA regulation.
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What is a three-compartment sink rule?

Well, what is a 3-comparment sink?
A three-compartment sink rule is a standard practice in commercial kitchens used to ensure proper cleaning and sensitization of dishes, utensils, and cookware.
Each compartment of the sink serves a specific purpose – washing, rinsing, and sanitizing. This process helps in maintaining hygiene and preventing cross-contamination.
Let’s understand the role of each sink in a 3-compartment sink rule:
Wash sink
The very first sink is a wash sink. It is used to remove any leftover food from the dishes and cookware.
The wash sink is typically be filled with hot, soapy water. The water in the water in the wash sink of 3-compartment sink is should be least 110°F (43°C).
The temperature is effective to remove grease, dirt particles, and food particles.
Rinse sink
The second compartment, the rinse sink, is for rinsing off any detergent and debris from the dishes.
The water in this sink should be clean and at the same temperature as the first sink, 110°F (43°C). This is to ensure there’s no cleaning detergent residue left before moving on to the sanitizing compartment.
Sanitizing sink
The third compartment, the sanitizing sink, is the most crucial sink.
Here, the dishes are soaked in a sanitizing solution or very hot water, such as 170°F. The dishes are soaked only for one minute but it can vary depending on the Environmental Protection Agency’s (EPA) guidelines and local requirements.
This step is to eliminate any remaining bacteria and other harmful microorganisms.
The Water In The Wash Sink Of A Three-Compartment Sink Must Be At Least What Temperature?

The water in the wash sink of a three-compartment sink must have a minimum temperature of 110°F (43°C), as per FDA food code recommendations.
But why does the water in the sink have to be at this specific temperature?
Simply, this 110°F is perfect for effective cleaning as it helps loosen grease, grime, and food particles, making it easier for your detergent solution to get its job done effectively.
It not only improves the performance of cleaning detergent but also helps get rid of any stubborn grime or grease. It ensures effective cleaning of dishes while maintaining hygiene throughout the whole process.
To maintain this temperature, staff use tools like kitchen thermometers or a built-in sink gauge.
By maintaining 110°F temperature in the wash sink of a 3-compartment sink, commercial kitchens can remains clean, safe, and sanitized to kill any germs.
What temperature should a handwashing sink be?
The water temperature in the handwashing sink should be at least 100°F (38°C), as per the recommendation of FDA food code. This temperature is warm enough to effectively clean hands and remove bacteria, dirt, and grease.
Through a mixing valve or temperature-controlled faucet, one can set the temperature to clean their hands thoroughly and also meet the health code requirements.
This temperature is crucial in making the handwashing process thorough and efficient while reducing the chances of cross-contamination in food preparation areas.
Why does temperature in 3-compartment sink matter?
Water temperature plays an important role in maintaining proper hygiene and food safety in commercial kitchens. The three-compartment sink system helps effectively remove grease, food particles, and other harmful bacteria, ensuring proper sanitation while meeting health standards set by the FDA.
The hot water in the wash and rinse sink, makes it easier to remove stubborn grease, grime, and leftover food, enhancing the effect of detergent to clean the wares and dishes effectively.
As per FDA food code recommendations, the water temperature should be at 110 degrees Fahrenheit (43 degrees Celsius), for washing sink and rinsing sink.
For the sanitizing sink, the temperature should be 171 degrees Fahrenheit.
By following these temperature guidelines set by the FDA and health codes, food establishments can prevent cross-contamination and make sure the utensils and cookware are properly cleaned.
How often should you change the water in a 3-compartment sink?
You should change the water in a three-compartment sink every four hours, to maintain effective cleanliness and comply with the health regulations.
Especially in busy kitchens, you should change the water whenever it becomes visibly dirty, or greasy, and see no suds (means the detergent has lost its effectiveness) .These visible signs are clear indications that the water is no longer suitable for cleaning.
Also, when the water cools down and goes below the recommended temperature for washing, rinsing, and sanitizing, you should the change water.
Regularly changing the water ensures the dishes and cookware are cleaned properly and leaves no chance of food contamination.
Conclusion
The water in the wash sink of a three-compartment sink plays an important role in maintaining cleanliness and food safety in commercial kitchens.
Maintaining the right temperature is crucial for the cleaning process. This ensures that the dishes, utensils, and cookware are cleaned thoroughly and ready for the next use.
To be exact, the water temperature in the wash of 3-compartment sink should be at 110°F (43°C), as per the FDA guidelines.
By following these guidelines, commercial kitchens can ensure their dishes are sanitized properly to prevent any foodborne disease and maintain a safe environment for food preparation.
Also, make sure to change the water whenever it gets dirty or greasy or goes below the recommended temperature.
Proper management of the water in the wash sink of a three-compartment sink ensures hygiene and food safety while protecting customers’ health and keeping the business running smoothly.
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Frequently Asked Questions(FAQs)
What should be the answer to the water in the wash sink of a three-compartment sink?
The water in the sink of a three-compartment sink must be at least 110 degrees Fahrenheit (43 degrees Celcius). This is to ensure the dishes and cookware are cleaned properly and sanitized for the next use.
What temperature should the water be in a wash sink?
According to FDA guidelines, the water in the wash sink must be at 110 degrees Fahrenheit. This temperature helps remove any grease, grime, harmful bacteria, and food particles.
How often should you change the water in a 3-compartment sink?
The water should be changed at least every 4 hours. However, to maintain effective cleaning, the water should be changed whenever it becomes dirty, greasy, or drops below the recommended temperature.
What goes in the 3rd sink in the 3-sink washing method?
The third sink is filled with sanitizing solution, it’s the last step of the cleaning process. There are three types of chemical sanitizers- chlorine, quat, and iodine. The cleaned dishes and wares are briefly placed in the sanitizing solution or hot water at 171 degrees Fahrenheit, to effectively remove the harmful bacteria and prevent contamination.
Why should the water in the wash compartment be changed regularly?
Changing the water in the wash compartment regularly helps in maintaining cleanliness and effectiveness. The water should be changed every 4 hours and when it starts appearing dirty, or greasy, or when the water cools down.